74 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
A pygmy form of this species is not seldom met with in the Caribbean Sea 
in 300 fathoms water. A variety of higher development that Brady has de- 
scribed under a separate denomination (P. acervalis) is also joined with the 
type, but of more rare occurrence. 
Caribbean Sea. 300 fathoms (Goés). 
CARPENTERIA Gray. 
C. proteiformis Gois. 
Plate VI. Figs. 8-17. 
C. balaniformis Gray var. proteiformis GO#S, 1882, Ret. Rhizop. Caribb. Sea, Sv. Vet. 
Ak. Hdl., XIX. 4, p. 94, Pl. VI. Figs. 208-214, Pl. VII. Figs. 215-219. 
C. proteiformis Br., 1884, Chall. Rep., IX. 9, p. 679, Pl. XCVII. Figs. 8-14. 
A form that can scarcely be defined with ordinary characteristics, so great 
are its variations of form, as shown on our Plate. 
Caribbean Sea. 400 fathoms; in certain places not scarce (Goés). 
RUPERTIA Watticz. 
R. stabilis Watt. 
R. stabilis Waxuicn, 1877, a new sessile Foraminifer from N. Atlantic, An. Mag. 
Nat. Hist. (4.), XIX. p. 501, Pl. XX. Figs. 1-4. 
R. stabilis Br., 1884, Chall. Rep., IX. p 680, Pl. XCVIII. Figs. 1-12. 
R. stabilis Go&s, 1894, Arct. & Scand. Foramf., Sv. Vet. Ak. Hdl., XXV. 9, p. 92, 
Pl. XV. Fig. 789. 
A few specimens of this remarkable Foraminifer, most of them in a half- 
grown state, have been met with in the Pacific, usually attached to arms 
of Rhabdammina. The last convolution is wider than usual in Northern 
specimens. 
Pacific, off Acapulco. 772 fathoms. 
GYPSINA Carter. 
G, vesicularis var. discus Gois. 
Plate VII. Figs 4-6. 
Tinoporus vesicularis Gos, 1882, Ret. Rhiz. Caribb. Sea, Sv. Vet. Ak. Hdl., XIX. 
4, p. 104, Pl. VII. Figs. 245-247. 
A variety closely allied to the type, from which it differs only in its lenticular 
shape, and its more plainly differentiated set of the central cycle of chambers. 
It is not found affixed. 
Caribbean Sea. 400 fathoms; scarce (Goés). 
We 
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