TROPICAL PACIFIC FORAMINIFERA OF "ALBATROSS" 9 



the types in Vienna has shown. This choice of type, therefore, un- 

 fortunately leaves no real distinction between these two genera. 



MARGINUUNA cf. CREPIDULA (Fichtel and Moll) 



Plate 1, Figures la, b; Plate 2, Figures 10a, b 



Two specimens are here figured which may belong to this species 

 described by Fichtel and Moll from the Mediterranean. They 

 evidently belong to the genus Marginulina, as they are becoming 

 slightly uncoiled. Specimens of this sort are extremely rare in the 

 collections studied, and the figured specimens are from Albatross 

 Stations H3798, Cape Martin, Nukuhiva Island, 30° N., 6K miles E., 

 in 687 fathoms, and H3840, latitude 17° 21' S., longitude 149° 15' W., 

 in 1,585 fathoms. 



MARGINUUNA cf. SUBCRASSA Schwager 



Plate 2, Figures 11a, 6 



The form figured is possibly to be referred to Schwager's species. 

 It is nearly transparent, and the coiling at the base is almost entirely 

 reduced, but the sutures are distinctly oblique. The specimen is 

 from Albatross Station H3878, latitude 16° 13' S., longitude 143° 48' W., 

 in 987 fathoms. 



MARGINUUNA INSOUTA (Schwager) 



Plate 3, Figures la, b 



Cristellaria insolita Schwager, Novara-'Exped., Geol. Theil, vol. 2, p. 242, pi. 6, 

 fig. 85, 1866. 



Test somewhat elongate, much compressed, earher chambers 

 close coiled, later ones tending to elongate and become uncoiled, 

 periphery rounded; chambers distinct, fairly numerous, elongating 

 considerably as added in the adult portion; sutures distinct, very 

 slightly if at all depressed, not limbate, only slightly curved; wall 

 smooth, very finely perforate; aperture radiate, peripheral. Length, 

 0.35 mm; breadth, 0.15 mm; tliickness, 0.1 mm. 



This form seems to be very closely related to the species described 

 by Schwager from the Pliocene of Car Nicobar. The figured speci- 

 men is from Port Lotten, Kersail, Caroline Islands. There is also a 

 single specimen from Albatross Station H3876, northwest entrance of 

 Makemo Lagoon, 1 mile SE., in 467 fathoms. 



Genus SARACENARIA Defrance, 1824 



Saracenaria Defrance, Diet. Sci. Nat., vol. 32, p. 177, 1824. 

 Synonym: Cristellaria (part) of authors. 



Genoholotype. — Saracenaria italica Defrance. 



Test with the earliest chambers close coiled, later uncoiling, usually 

 triangular in transverse section; aperture as in Robulus. Jurassic to 

 Recent. 



