_Habitat._--Western Tropical Pacific, Station 225, depth 4475 fathoms. 3. _Pylobotrys cerebralis_, n. sp. (Pl. 96, fig. 22). Cephalis multilobate, with four divergent cylindrical tubes, which are cylindrical, obliquely truncate at the mouth, and correspond in position to the four typical spines of _Cortina_; an ascending apical tube and three descending basal tubes (an odd caudal and two paired pectoral). The helmet-shaped occipital lobe is about as large as the frontal half of the cephalis, which is divided into three pairs of smaller pyriform lobes. Thorax subspherical, about as large as the cephalis and half as large as the inflated abdomen. Pores very scarce and small. _Dimensions._--Length of the shell 0.15, breadth 0.08. _Habitat._--Indian Ocean, Cocos Islands, Rabbe, surface. Genus 494. _Botryocampe_,[111] Ehrenberg, 1860, Monatsber. d. k. preuss. Akad. d. Wiss. Berlin, p. 829. _Definition._--#Pylobotryida# without tubes on the cephalis, and with the mouth of the abdomen closed. The genus _Botryocampe_ may be derived from _Botryocyrtis_ by development of a basal lattice-plate, closing the terminal mouth of the abdomen. It is at the same time closely allied to the Tricyrtid _Theocapsa_, and may be perhaps derived from this by lobation of the cephalis. {1123}1. _Botryocampe inflata_, Ehrenberg. _Botryocampe inflata_, Ehrenberg, 1861, Monatsber. d. k. Akad. d. Wiss. Berlin, p. 296; Abhandl. d. k. Akad. d. Wiss. Berlin, 1872, p. 285, Taf. ii. fig. 4. _Botryocampe inflata_, Haeckel, 1862, Monogr. d. Radiol., p. 345. _Lithobotrys inflata_, Bailey, 1856, Amer. Journ. Sci. and Arts, vol. xxii. p. 1, pl. i. fig. 15. Cephalis trilobate, inflated, of about the same breadth and length as the tun-shaped thorax and the hemispherical abdomen. Frontal lobes of the cephalis ovate, a little smaller than the ovate odd occipital lobe. Pores numerous and small. _Dimensions._--Length of the shell 0.05 to 0.08, breadth 0.02 to 0.04. _Habitat._--Cosmopolitan; Mediterranean, Atlantic, Pacific, Stations 267 to 274, 241, 354, &c., surface, and in various depths. 2. _Botryocampe theocapsa_, n. sp. Cephalis trilobate, half as long as the campanulate thorax, and one-third as long as the ovate abdomen. Frontal lobes subspherical, scarcely half as long as the helmet-shaped occipital lobe. Pores very small and scarce. _Dimensions._--Length of the shell 0.12, breadth 0.04. _Habitat._--South Atlantic, Station 335, depth 1425 fathoms. 3. _Botryocampe galea_, Haeckel. _Lithobotrys galea_, Ehrenberg, 1844, Monatsber. d. k. preuss. Akad. d. Wiss. Berlin, p. 83. _Lithocorythium galea_, Ehrenberg, 1854, Mikrogeol., Taf. xxii. fig. 29, a, b. _Lithocorythium galea_, Haeckel, 1862, Monogr. d. Radiol., p. 330.