BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY, 
Pacific. 995-1270 fathoms. 
At this depth, in 71° 5’ Lat, N., 79° 40’ Long. W., found in greatest 
abundance, affording one of the most prominent constituents of the bottom. 
HYPERAMMINA Brapy. 
H. elongata Brapy. 
H. elongata Br., 1878, Ret. € Radiol. Rhizop. Arct. Exped. 1875-76, Ann. Mag. 
Nat. Hist., ser. 5, I. p. 433 (partly). 
II. elongata Br., 1884, Challeng. Rep., IX. p. 257, Pl. XXIII. Figs. 4, 7-10. 
H. elongata Gots, 1898, Arct. & Scandin. Foramf., Sv. Vet. Ak. Hdl., XXV. 9, p. 17, 
Pl. IV. Figs. 55-58. 
'The smooth North Atlantie form has very rarely been met with; the shell 
wall usually being more coarse. 
Pacific. 885-1201 fathoms; scarce. 
Caribbean Sea. 169-1630 fathoms ; scarce. 
ALLIED Form :— 
H. friabilis BRADY. 
H. elongata BR., 1878, Retie. & Radiol. Rhizop. Arct. Exped. 1875-76, Ann. Mag. 
Nat. Hist., ser. 5, I. p. 433, Pl. XX. Fig. 2. 
II. elongata Gos, 1882, Ret. Rhizop, Caribb. Sea, Sv. Vet. Ak. Hdl., XIX. 4, 
p. 142, Pl. XII. Figs. 426-428, ? 429. 
H. friabilis Br., 1884, Chall. Rep., IX. p. 258, Pl. XXIII. Figs. 1-8, 5, 6. 
H. friabilis Gots, 1898, Arct. & Scand. Foramf., Sv. Vet. Ak. Hdl, XXV. 9, 
p. 17, PL IV. Fig. 59. 
Is not very distinct from the type, particularly the more shiny specimens. 
Caribbean Sea. 239 fathoms; scarce. 
H. ramosa BRADY. 
I. ramosa Br., 1870, Rhizop. Challeng. Exped.; Qu. Journ. Microsc. Sc. (n. s.), 
XIX. p. 33, Pl. III. Figs. 14, 15. 
H. ramosa BR., 1884, Challeng. Rep., IX. p. 261, Pl. XXIII. Figs. 15-19. 
H. ramosa Gois, 1898, Arct. & Scandin. Foramf., Sv. Vet. Ak. Hdl., XXV. 9, p. 18, 
Pl. IV. Figs. 61, 62. 
Our form is somewhat stouter and more firmly built than specimens from 
the North Atlantic. Whole samples with spared primordial chamber are 
very seldom met with. 
Pacific. 885-1201 fathoms. 
Caribbean Sea. 169-1830 fathoms; scarce. 
