REPORT ON THE RADIOLARIA. 1283 



13. Carpocanium petalospyris, n. sp. (PL 52, fig. 19). 



Shell subspherical, smooth, with perfectly hidden cephalis. Length of the two joints = 1:6, 

 breadth = 3:6. Pores regular, circular, hexagonally framed, twice as broad as the bars, in about 

 sixteen longitudinal rows. Mouth slightly constricted, little narrower than the thorax. Peristome 

 with twenty to twenty-four vertical, broad, lamellar feet, which are nearly as long as the shell, at 

 the distal end truncate, and almost in contact at their edges. 



Dimensions. Cephalis 0'02 long, 005 broad ; thorax O'll long, 012 broad. 



Habitat. Central Pacific, Station 271, depth 2425 fathoms. 



14. Carpocanium polypterum, Haeckel. 



Cryptoprora polyptera, Ehrenberg, 1872, Abhandl. d. k. Akad. d. Wiss. Berlin, p. 287, Taf. ix. 



fig. 17. 

 Carpocanium macropterum, Ehrenberg, 1872, Abhandl. d. k. Akad. d. Wiss. Berlin, p. 302. 



Shell campanulate-conical, smooth, with perfectly hidden cephalis. Length of the two joints = 

 1 : 6, breadth = 4:6. Pores regular, circular, twice as broad as the bars, in about sixteen longi- 

 tudinal rows. Mouth wide open, not constricted. Peristome with twenty to thirty vertical, slender, 

 conical feet, about as long as the shell. 



Dimensions. Cephalis O'Ol long, 0'04 broad ; thorax 0'06 long, 0'06 broad. 



Habitat. Indian Ocean (Zanzibar), depth 2200 fathoms (Pullen). 



15. Carpocanium palmipes, n. sp. 



Shell ovate, very thick-walled, smooth. Lower half of the subspherical cephalis hidden in the 

 summit of the thorax, upper half free, with few small pores. Length of the two joints = 3 : 10, 

 breadth =3 : 10. Thorax foveolate, with oblong dimples, each of which encloses a small, circular, 

 double-contoured pore, half as broad as the bars. Mouth little constricted, nearly as broad as the 

 thorax. Peristome prolonged into a solid, cylindrical tiibe, nearly as long and as broad as the 

 shell ; the upper half of the tube is solid, the lower divided into from twelve to fifteen vertical, 

 lamellar, pointed feet. 



Dimensions. Cephalis 0'03 long, 0'03 broad ; thorax O'l long, O'l broad. 



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



16. Carpocanium peristomium, n. sp. (PL 52, figs. 16, 17). 



Shell ovate, smooth, with perfectly hidden, flat cephalis (fig. 17). Length of the two 

 joints = 2 : 10, breadth = 5 : 9. Pores small and very numerous, regular, circular, as broad as the 

 bars, in about twenty longitudinal rows. Mouth little constricted. Peristome broad ; in the upper 



