GOES: FORAMINIFERA. 45 
BULIMINA »'Onz. 
B. pyrula »'Ons. 
B. pyrula v’Ors., 1846, Bass. tert. Vienne, p. 184, Pl. XI. Figs. 9, 10. 
D. pyrula Br., 1884, Chall. Rep., IX. p. 399, Pl. L. Figs. 7-12. 
This species attains great development in the seas on both sides of the Isth- 
mus, individuals of 1.75 to 2 mm., and much inflated, not being scarce. It is 
often provided with spines on the earlier segments (var. spinescens Br., Figs. 
11, 12). 
Pacific, 772 fathoms; not scarce, 
Caribbean Sea. 463 fathoms; not scarce. 
ALLIED Form: 一 
B. ellipsoides Cosra. 
B. ellipsoides Costa, 1854, Pal. Napol., II. p. 265, Pl. XV. Fig. 9. 
B. ovata BR., 1884, Chall. Rep., IX. p. 400, Pl. L. Fig. 13. 
D. ellipsoides Goiis, 1898, Arct. & Scand. Foramf., Sv. Vet. Ak. Hdl., XXV. 9. 
p. 45, Pl. VIII. Figs. 431-436. 
In the Challenger Report, IX., Brady has designed our form under 
d'Orbigny's denomination of B, ovata. But that form is more slender, 
and provided with more numerous visible segments, 
The two forms are however too much allied to be specifically distin- 
guishable. Our form varies much in shape from cylindric to ovoid and 
fusiform, the latter being nearly identical with B. afnis. 
Pacific. 695-1832 fathoms ; nof scarce. 
Gulf of Mexico. 210-978; not scarce. 
B. aculeata D'Or». 
B. aculeata D'ORB., 1826, Tab. Méth., Ann. Se. Nat., VII. p. 269. 
B. aculeata Goiis, 1882, Ret. Rhizop. Caribb. Sea, Sv. Vet. Ak. Hdl, XIX. 4, Pl. 
IV. Figs. 82, 83 (young). 
B. aculeata BR., 1884, Chall. Rep., IX. p. 406, Pl. LI. Figs. 7-9. 
It is not without some hesitation that our form may be identified with 
B. aculeata of d'Orbigny, since Soldani's figure cited does not afford sufficient 
accuracy for an exact comparison. Our form agrees best with Williamson’s 
B. pupoides var. spinulosa (Rec. For. Gr. Brit., p. 62, Pl. V. Fig. 128), and also 
with Brady's Fig. 8, Pl. LI. in Chall. Rep. 
Caribbean Sea. 500-724 fathoms; scarce. 
