DESCRIPTIVE CATALOGUE OF RECENT FORAMINIFERA. 325 



SPH^ROIDINA BULLOIDES d'Orbigny. 

 (Plate 71, fig. 1.) 



Ifearly spherical, smooth, composed of comparatively few segments 

 arranged in an approximately symmetrical spire; sutures slightly 

 depressed; walls minutely and indistinctly perforated; aperture semi- 

 circular or cresceutic, sometimes with a valvular lip, at the inner 

 margin of the last segment. Diameter, about 1 mm. (.^5 inch). 



Localities. — Widely distributed; specimens from North Atlantic, Gulf 

 of Mexico, and South Atlantic (stations 2530, 2383, 2760), 956 to 1,181 

 fathoms. 



SPH^ROIDINA DEHISCENS Parker and Jones. 

 (Plate 71, fig. 2.) 



Subglobular; segments arranged as in S. hulloides; sutures at the 

 bottom of wide and deep irregular fissures; walls thick and conspicu- 

 ously ijerfor a ted; aperture an arched opening into the deep fissure at 

 the base of the last segment. Diameter, about 1 mm. (2-5- inch). 



Localities. — Caribbean Sea, Gulf of Mexico, and off Windward 

 Islands (stations 2150, 2358, 2399, 2751), 196 to 687 fathoms. 



Genus CANDEINA. 



Test trochoid; segments inflated; shell- walls thin, finely perforated; 

 aperture consisting of rows of pores along the septal depressions. 



CANDEINA NITIDA d'Orbigny. 

 (Plate 71, fig. 3.) 



Contour irregular, subconical; segments twelve to fifteen, subspher- 

 ical, smooth, regularly increasing in size, arranged in an elongated 

 spiral; sutures deeply depressed, walls thin and very minutely per- 

 forated; aperture a series of jjores rather closely set in the sutures 

 uniting the segments. Diameter, about 0.5 mm. (--^ inch). 



Locality. — Specimens taken near the Windward Islands (station 

 2751), 687 fathoms. 



Family IX. ROTALID.E. 



Test calcareous, perforated; free or adherent. Typically spiral and 

 "rotaliform;" that is to say, coiled in such a manner that all the 

 segments are visible on the superior surface, those of the last convolu- 

 tion only on the inferior or apertural side, sometimes one face being 

 more convex, sometimes the other. 



SiaTafamily SPIRILLHSriN-^E. 



Test spiral, nonseptate. 



Genus SPIRILLINA. 

 Test a complanate, planospiral, nonseptate tube; free or attached. 



