Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, Plates / Report on the Scientific Results of the Voyage of H.M.S. Challenger During the Years 1873-76, Vol. XVIII

by Ernst Haeckel

PLATE 123.
Concharida.
Diam.			Page.
(The central capsule is coloured red in the figures of this plate, the phæodium green).
Fig. 1. Concharium diatomeum, n. sp.,	[1717]
Dorsal view. The central capsule (red) exhibits above the anterior tubular main-opening (astropyle), and below the two small posterior lateral openings (right and left parapylæ).
Fig. 2. Concharium bivalvum, n. sp.,	×	150	[1717]
Dorsal view. The central capsule is visible in the lower part, the margin of the two valves in the upper part of the figure.
Fig. 2a exhibits the two smooth lateral margins of the valves, catching into one another. (Lateral view).
Fig. 3. Concharium nucula, n. sp.,	[1717]
The dorsal valve alone, seen from the outside.
Fig. 4. Concharium bacillarium, n. sp.,	[1718]
Lateral view from the smooth margin, by which the two valves are united.
Fig. 5. Conchasma radiolites, n. sp.,	×	300	[1719]
Lateral view. In the aboral half of the shell-cavity lies the red central capsule, in the oral half the green phæodium.
Fig. 6. Conchasma sphærulites, n. sp.,	×	300	[1719]
Lateral view. On the aboral pole the two horns of the hinge.
Fig. 7. Conchellium tridacna, n. sp.,	×	200	[1720]
Oblique lateral view (from the right and ventral side).
Fig. 7a. Three pores of the same, with their hexagonal frames and six internal denticles,	×	400
Fig. 8. Conchopsis carinata, n. sp.,	×	150	[1725]
Lateral view, from the left side.
Fig. 9. Conchopsis lenticula, n. sp.,	×	150	[1726]
Lateral view, from the right side. The two membranes of the central capsule are separated by a wide interval in this and the preceding figure. The nucleus contains numerous nucleoli.
Fig. 9a. Two of the peculiar cells, which are contained in the green phæodium in large numbers,	×	400

PLATE 124.

Legion PHÆODARIA.

Order PHÆOCONCHIA.

Family Concharida.

PLATE 124. Concharida. Diam. Page. Fig. 1. Conchidium terebratula, n. sp., × 400 [1721] Lateral view, from the left side. Fig. 2. Conchidium terebratula, n. sp., × 800 [1721] A piece of the frontal girdle-fissure, with the teeth of both valves catching into one another. Fig. 3. Conchidium rhynchonella, n. sp., × 200 [1722] Lateral view, from the left side. Fig. 4. Conchidium leptæna, n. sp., × 300 [1722] Girdle-fissure with the teeth, seen from the left side. Fig. 5. Conchidium leptæna, n. sp., × 800 [1722] A single tooth with its base. Fig. 6. Conchidium thecidium, n. sp., × 300 [1721] Lateral view, from the left side. In the oral part of the shell-cavity the dark phæodium, in the aboral part the central capsule with two nuclei (a dorsal and a ventral). Fig. 7. Conchidium argiope, n. sp., × 300 [1722] Oblique oral view (half from the anterior, half from the left side). Fig. 8. Conchidium argiope, n. sp., × 300 [1722] Dorsal valve, from below. Fig. 9. Conchidium argiope, n. sp., × 600 [1722] A piece of the valve margin, with four teeth. Fig. 10. Conchonia diodon, n. sp., × 200 [1723] Lateral view, from the left side. In the anterior part of the shell-cavity the dark phæodium, in the posterior part the central capsule with the nucleus. The two valves are connected at the posterior hinge by a ligament (to the right in the figure). Fig. 11. Conchonia diodon, n. sp., × 400 [1723] Mouth of the shell, with its two lips, seen from the oral pole. Fig. 12. Conchonia diodon, n. sp., × 400 [1723] A piece of the valve-margin, with four teeth. Fig. 13. Conchonia triodon, n. sp., × 300 [1724] Ventral valve, seen from the lower face. Fig. 14. Conchonia triodon, n. sp., × 300 [1724] Dorsal valve, seen from the left side. Fig. 15. Conchoceras caudatum, n. sp., × 300 [1727] Lateral view, from the left side. Fig. 16. Conchoceras cornutum, n. sp., × 200 [1728] Lateral view, from the left side.

PLATE 124.
Concharida.
Diam.			Page.
Fig. 1. Conchidium terebratula, n. sp.,	×	400	[1721]
Lateral view, from the left side.
Fig. 2. Conchidium terebratula, n. sp.,	×	800	[1721]
A piece of the frontal girdle-fissure, with the teeth of both valves catching into one another.
Fig. 3. Conchidium rhynchonella, n. sp.,	×	200	[1722]
Lateral view, from the left side.
Fig. 4. Conchidium leptæna, n. sp.,	×	300	[1722]
Girdle-fissure with the teeth, seen from the left side.
Fig. 5. Conchidium leptæna, n. sp.,	×	800	[1722]
A single tooth with its base.
Fig. 6. Conchidium thecidium, n. sp.,	×	300	[1721]
Lateral view, from the left side. In the oral part of the shell-cavity the dark phæodium, in the aboral part the central capsule with two nuclei (a dorsal and a ventral).
Fig. 7. Conchidium argiope, n. sp.,	×	300	[1722]
Oblique oral view (half from the anterior, half from the left side).
Fig. 8. Conchidium argiope, n. sp.,	×	300	[1722]
Dorsal valve, from below.
Fig. 9. Conchidium argiope, n. sp.,	×	600	[1722]
A piece of the valve margin, with four teeth.
Fig. 10. Conchonia diodon, n. sp.,	×	200	[1723]
Lateral view, from the left side. In the anterior part of the shell-cavity the dark phæodium, in the posterior part the central capsule with the nucleus. The two valves are connected at the posterior hinge by a ligament (to the right in the figure).
Fig. 11. Conchonia diodon, n. sp.,	×	400	[1723]
Mouth of the shell, with its two lips, seen from the oral pole.
Fig. 12. Conchonia diodon, n. sp.,	×	400	[1723]
A piece of the valve-margin, with four teeth.
Fig. 13. Conchonia triodon, n. sp.,	×	300	[1724]
Ventral valve, seen from the lower face.
Fig. 14. Conchonia triodon, n. sp.,	×	300	[1724]
Dorsal valve, seen from the left side.
Fig. 15. Conchoceras caudatum, n. sp.,	×	300	[1727]
Lateral view, from the left side.
Fig. 16. Conchoceras cornutum, n. sp.,	×	200	[1728]
Lateral view, from the left side.

PLATE 125.