Dimensions.—Length of the shell (with five joints) 0.1. Length of the single joints, a 0.012, b 0.012, c 0.02, d 0.03, e 0.025; greatest breadth 0.05.
Habitat.—Cosmopolitan; Atlantic, Pacific; many stations, in different depths.
15. Lithocampe heteropora, Haeckel.
Lithocampe heteropora, Haeckel, 1862, Monogr. d. Radiol., p. 317.
Eucyrtidium heteroporum, Ehrenberg, 1854, Monatsber. d. k. preuss. Akad. d. Wiss. Berlin, p. 242.
Shell smooth, subconical, obtuse, with four distinct strictures. Five joints of different lengths = 2 : 4 : 3 : 3 : 2. The fourth joint is the broadest. Mouth slightly constricted. Pores regular, circular, in the second joint much larger than in the four others, disposed in transverse series; two rows in the first and fifth, three rows in the second, four rows in the third and fourth joints.
Dimensions.—Length of the shell (with five joints) 0.14. Length of the single joints, a 0.02, b 0.04, c 0.03, d 0.03, e 0.02; greatest breadth 0.07.
Habitat.—North Atlantic (depth 2000 fathoms, Ehrenberg), Canary Islands, surface, Haeckel.
16. Lithocampe meta, Stöhr.
Lithocampe meta, Stöhr, 1880, Palæontogr., vol. xxvi. p. 103, Taf. iv. fig. 4.