1456 THE VOYAGE OF H.M.S. CHALLENGER. 



hemispherical, with a curved conical horn of twice the length. (In the somewhat mutilated specimen 

 figured, the horn and the nine feet were broken off, but were well preserved in another specimen, 

 found afterwards.) 



Dimensions. — Length of the shell (with twelve joints) 0-22, eighth joint 0-02, fourth joint O'Ol ; 

 basal breadth 012. 



Habited. — Central Pacific, Station 271, depth 2425 fathoms. 



5. Stichophormis radiata, n. sp. 



Shell slender, conical, with fourteen annular strictures, and nine radial ribs ; three primary ribs 

 arise from the third stricture, the other six (secondary) ribs from the ninth stricture ; all are pro- 

 longed over the mouth into nine slender bristle-shaped feet, about twice as long as one joint. All 

 joints have nearly the same length. Cephalis subspherical, with a straight, conical horn three times 

 the length. Pores regular, hexagonal. 



Dimensions. — Length of the shell (with fifteen joints) 0"24, of each joint, about 0'016 ; basal 

 breadth 012. 



Habitat. — South Pacific, Station 300, depth 1375 fathoms. 



Genus 637. PJwrmocampe, n. gen. 



Definition. — S t i c h o p h o r m i d a (vel Stichocyrtida multiradiata aperta), with 

 conical or pyramidal shell, without lateral ribs. Mouth dilated, with a corona of terminal 

 feet. 



The genus Phormocampe may be derived from the preceding Stichophormis by 

 loss of the lateral ribs, whilst the terminal feet remain. It bears therefore to the latter 

 the same relation that Calocyclas exhibits to Theophormis among the Tricyrtida. 



Subgenus 1. Anthocorys, Haeckel, 1881, Prodromus, p. 437. 



Definition. — Shell with three transverse strictures or annular septa, and with four 

 distinct joints. 



1. Phormocampe campanula, n. sp. (PL 77, fig. 13). 



Anthocorys campanula, Haeckel, 1881, Prodromus et Atlas (loe. cit.). 



Shell campanulate, with three internal, annular septa. Length of the four joints = 5:2:8:3. 

 Cephalis three-sided, pyramidal, slender, bearing a pyramidal horn of the same length, with three 

 dentate edges. Thorax very small, hemispherical. Third joint very large, campanulate. Fourth 

 joint of the same breadth, but only one-third as long. Pores subregular, circular. Peristome \vith a 

 coronal of twelve to fifteen conical, divergent feet, as long as the last joint. 



' P/wrmocamye = Latticed caterpillar ; (fi^ins, xa/fjri). 



