Dimensions.—Length of the three joints, a 0.02, b 0.03, c 0.09; breadth, a 0.03, b 0.06, c 0.06.
Habitat.—North Atlantic, Canary Islands, Station 353, depth 2965 fathoms.
11. Theocapsa wolffii, n. sp. (Pl. [66], fig. 14).
Shell slender, spindle-shaped very thick-walled, rough, without external strictures, but with two broad internal girdles. Length of the three joints = 2 : 3 : 15, breadth = 4 : 5 : 7. Cephalis with a short horn of the same length, conical. Abdomen five times as long as the thorax, with the same subregular, circular pores. Basal pole inversely conical, with some larger, elongate pores.
Dimensions.—Length of the three joints, a 0.02, b 0.03, c 0.15; breadth, a 0.04, b 0.05, c 0.07.
Habitat.—Mediterranean, Crete, depth 1620 fathoms (Spratt).
12. Theocapsa pallasii, n. sp.
Shell subovate, thorny, with two slight strictures. Length of the three joints = 1 : 2 : 3, breadth = 1 : 2 : 3. Cephalis ovate, with a pyramidal horn of the same length. Thorax and abdomen with subregular, circular pores of medium size. Basal pole hemispherical. (Differs from Theocapsa mülleri, Pl. [66], fig. 7, mainly in the larger number and smaller size of the regular, quincuncial pores.)
Dimensions.—Length of the three joints, a 0.03, b 0.06, c 0.09; breadth, a 0.03, b 0.06, c 0.09.
Habitat.—Tropical Atlantic, Station 342, depth 1445 fathoms.