Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, Second Part: Subclass Osculosa; Index / Report on the Scientific Results of the Voyage of H.M.S. Challenger During the Years 1873-76, Vol. XVIII

by Ernst Haeckel

I. Subfamily Botryopylida. Mouth of the thorax open.
		Cephalis without porous tubes,
				488. Botryopyle.
		Cephalis with a variable number of porous tubes,
				489. Acrobotrys.
II. Subfamily Botryocellida. Mouth of the thorax closed by a lattice-plate.
		Cephalis without porous tubes,
				490. Botryocella.
		Cephalis with a variable number of porous tubes,
				491. Lithobotrys.

Genus 488. Botryopyle, Haeckel, 1881, Prodromus, p. 440.

Definition.—Lithobotryida without tubes on the cephalis, and with the mouth of the thorax open.

The genus Botryopyle comprises the simplest forms of Lithobotryida, the lobate cephalis bearing no tubes and the basal mouth of the thorax remaining open. It may be derived either from Dictyocephalus or from Desmospyris, by development of lobes on the cephalis and of an internal frontal septum, separating the larger occipital lobe from the smaller frontal half of the shell. The latter may be divided again into anterior frontal lobes, lateral buccal lobes, &c.

1. Botryopyle sethocorys, n. sp. (Pl. [96], fig. 7).

Cephalis trilobate, separated by a deep collar constriction from the hemispherical thorax, which is twice as broad. Occipital lobe helmet-shaped, little longer than the two hemispherical frontal lobes. Surface spiny. Pores irregular, roundish, of very different size.

Dimensions.—Length of the shell 0.1, breadth 0.07.

Habitat.—Western Tropical Pacific, Station 225, depth 4475 fathoms.

2. Botryopyle cribrosa, Haeckel.

Lithobotrys cribrosa, Ehrenberg, 1875, Abhandl. d. k. Akad. d. Wiss. Berlin, p. 76, Taf. iii. fig. 20.