REPORT ON THE RADIOL ARIA. 1281 



5. Carpocanium diadema, Haeckol. 



Carpocanium diadema, Haeckel, 1862, Monogr. d. Radiol, p. 290, Taf. v. fig. 1. 

 Carpocanium diadema, R. Hertwig, 1879, Organism, d. Radiol., p. 79, Taf. viii. figs. 7, 7a, 



8, 8a, 86. 



Shell ovate, with little vaulted cephalis. Length of the two joints = 1:8, breadth = 3:6. 

 Pores regular, circular, iu about twelve longitudinal rows, twice as broad as the bars. Mouth 

 constricted, half as broad as the thorax. Peristome with nine vertical, equilateral, triangular feet. 



Dimensions. — Cephalis OIU long, 0-03 broad ; thorax O'OS long, 0'06 broad. 



Habitat. — Cosmopolitan ; Mediterranean, Atlantic, Indian, Pacific ; many stations, surface. 



6. Carpocanium cylindricum, n. sp. 



Shell cylindrical, with hemispherical, flatly vaulted cephalis. Length of the two joints = 1:4, 

 breadth = 3 : 3. Pores regular, circular, double-contoured, as broad as the bars, in about fifteen 

 longitudinal series. ]\Iouth constricted, two-thirds as broad as the thorax. Peristome with nine 

 vertical, slender, triangular, pointed feet. 



Dimensions. — Cephalis 0'02 long, 0'06 broad ; thorax O^OS long, 0'06 broad. 



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



7. Carpocanium enneaphyllum, n. sp. 



Shell slenderly ovate, at the mouth truncate, thorny, with hemispherical, vaulted cephalis. Length 

 of the two joints = 1:6, breadth = 2:4. Pores regular, circular, hexagonally framed, as broad as the 

 bars, in about thirteen longitudinal rows. Mouth constricted, about two-thirds as broad as the 

 thorax. Peristome with nine broad, lamellar, vertical, nearly square feet, half as long as the shell, 

 with small intervals. 



Dimensions. — Cephalis 0'02 long, 0'04 broad ; thorax 012 long, 0'09 broad. 



Habitat. — South Atlantic, Station 332, depth 2200 fathoms. 



8. Carpocanium solitarium, Ehrenberg. 



Carpocanium solitarium, Ehrenberg, 1854, Mikrogeol., Taf. xxii. fig. 28. 



Litliocampe solitaria, Ehrenberg, 1844, Monatsber. d. k. preuss. Akad. d. Wiss. Berlin, p. 65. 



Shell slenderly ovate, twice as long as broad, with hidden spherical cephalis, completely enclosed 

 in the simimit of the thorax. Length of the two joints = 1:6, breadth = 1:4. Pores small, regular, 

 circular, as broad as the bars, in about eleven longitudinal rows. Mouth gradually constricted, half 

 as broad as the thorax. Peristome with nine ovate blunt feet, which are as long as the cephalis, 

 little curved and convergent. 



Dimensions. — Cephalis 0'02 long, 0'02 broad ; thorax 0"12 long, 0'07 broad. 



Habitat. — Fossil in Tertiary rocks of Sicily (Caltanisetta). 



(ZOOL. GHAIi. EXP. — PART XL. — 1886.) Rr 161 



