FOKAMINIFERA OF NORTH PACIFIC OCEAN. 121 



volution visible from below; wall composed of sand grains of varying 

 size and a considerable amount of cement, surface fairly smooth; aper- 

 ture a somewhat arched slit between the wall of the chamber and the 

 adjacent chamber of the previous volution on the lower side of the 

 test; color reddish-brown. 



Diameter 0.75-1.25 mm. 



Distribution. — There are no previous published records for this 

 species in the North Pacific. It has occurred at three Albatross sta- 



FlG. 1S7. — TROCHAMMINA SQUAMATA. X 51 (AFTER BRADY), a, FROM ABOVE; 6, FROM BELOW. 



tions, D5095 in 58 fathoms in the Gulf of Tokyo and H4881 in 316 

 fathoms near Blake Reef, Vincennes Strait, southern Japan. A 

 single large specimen was obtained. 



This species is much natter than the preceding and has fewer cham- 

 bers in each volution. 



TROCHAMMINA INFLATA 'Montagu). 



Nautilus inflatus Montagu, Test. Brit., Suppl., 1808, p. 81, pi. IS, fig. 3. 



Rotalina inflata Williamson, Recent Foraminifera of Great Britain, 1858, p. 50, 

 pi. 4, figs. 93, 94. — Parker and Jones, Ann. Mag. Nat. Hist., ser. 3, vol. 

 4, 1859, p. 347, fig. p.— "Williamson, Pop. Sci. Rev., vol. 4, 1865, p. 174, pi. 

 8, fig. 8. 



Trochammina inflata W. B. Carpenter, Parker, and Jones, Intr. Foram., 1862, 

 p. 141, pi. 11, fig. 5.— H. B. Brady, Nat. Hist. Trans. Northumberland and 

 Durham, vol. 1, 1865, p. 95. — Haeusler, Ann. Mag. Nat. Hist., ser. 5, vol. 10, 

 1882, p. 351, pi. 15, figs. 5-7; Neues Jahrb., 1883, pi. 1, fig. 60; pi. 4, 

 figs. 6, 7.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 33S, pi. 41, figs. 4a-c. — Balkwill and Wright, Trans. Roy. Irish Acad., 

 vol. 28, 1885, p. 331, pi. 13, figs. 11, 12.— Haeusler, Abh. schweiz. pal. 

 Ges., vol. 17, 1890, p. 65, pi. 10, figs. 25, 26.— "Woodward and Thomas, Geol. 

 and Nat. Hist. Surv. Minnesota, vol. 3, 1893, p. 28, pi. d, fig. 31.— Egger, 

 Abh. kon. bay. Akad. Wiss. Munchen, vol. IS, 1893, pi. 5, figs. 10-12, 16-18.— 

 Goes, Kongl. Svensk. Vet. Akad. Handl., vol. 25, no. 9, 1894, p. 29, pi. 6, 

 fiffs. 222-224.— Millett, Journ. Roy. Micr. Soc, 1899, p. 364.— Fornasini, 

 Mem. Real. Accad. Sci. 1st. Bologna, vol. 8, 1900, p. 367, fig. 15.— Side- 

 bottom, Mem. and Proc. Manchester Lit. and Philos. Soc, vol. 49, no. 5, 

 1905, p. 6, pi. 1, fig. 9. 



Description. — Test trochoid, spiral, composed of about three volu- 

 tions, the last-formed one consisting of five or six inflated chambers, 



