DESCRIPTIVE CATALOGUE OF RECENT FORAMINIFERA. 329 



cus narrowed by promontories of exogenous deposit. Diameter, 1 to 

 1.5 mm. (aV to -^g- inch). 

 Locality. Coast of Georgia (stations 2415, 2416), 440 and 276 fathoms. 



PULVINULINA AURICULA Fichtel and Moll. 

 (Plate 73, fig. 2.) 



Long oval in contour, biconvex, the convexity of the two sides about 

 equal, the earlier segments closely coiled, the later ones rapidly 

 increasing in size, especially in length; walls thin, transparent, and 

 finely perforated; sutures distinct, but not depressed or thickened; 

 margin sharp, but not carinate. Length, 0.5 to 1 mm. (-$ to -^ inch). 



Locality. Gulf of Mexico (stations 2400, 2641), 169 and 60 fathoms. 



PULVINULINA MENARDII d'Orbigny. 

 (Plate 73, fig. 3.) 



Contour subcircular, much flattened, composed of about two convo- 

 lutions of slightly inflated segments, all visible on the upper side, the 

 six forming the final whorl visible on the lower side; margin thin, 

 slightly lobed, and with a narrow keel; sutures broad, but not raised, 

 slightly depressed on the superior side; aperture a wide slit at the 

 inner margin of the last segment, often with a protruding under lip. 

 Diameter, about 1.25 mm. ($ inch). 



Localities. A very common and widely distributed species. Speci- 

 mens collected off Windward Islands, West Indies (station 2751), 687 

 fathoms. 



PULVINULINA MENARDII, variety FIMBRIATA Brady. 

 (Plate 73, fig. 4.) 



Has the same general characters as the type, but is smaller, and is 

 distinguished by the fringed peripheral border produced by the develop- 

 ment of numerous short spinous processes upon the normal narrow 

 keel. 



Locality. Coast of Brazil (station 2760), 1,019 fathoms. 



PULVINULINA TUMIDA Brady. 

 (Plate 73, fig. 5.) 



Like P. menardii, except that the segments are more inflated, making 

 a thicker shell, highly convex on both faces; margin not carinate; 

 sutures slightly, if at all, depressed below. 



Localities. Off coast of Yucatan and coast of Georgia (stations 

 2354, 2416), 130 and 276 fathoms. 



PULVINULINA CRASSA d'Orbigny. 

 (Plate 74, fig. 1.) 



Superior face flat, showing all the convolutions; inferior face highly 

 conical, composed of the final convolution only; umbilicus depressed; 

 segments somewhat inflated; walls hyaline, profusely and finely per- 



