312 REPORT OF NATIONAL MUSEUM, 1897. 



NODOSARIA VERTEBRALIS Batsch. 

 (Plate 57, fig. 5.) 



Long, slender, tapering, costate, differing from N. obliqua chiefly in 

 that the sutures are not depressed, and the septa are thick and of 

 transparent shell- substance, which contrasts with the white opacity of 

 the body of the segments. Length, about 5 mm. (-J- inch). 



Locality. Gulf of Mexico (stations 2377, 2378, 2399, 2400), 68 to 198 

 fathoms. 



NODOSARIA CATENULATA Brady. 

 (Plate 58, fig. 2.) 



Long, slender, straight or slightly curved, tapering, the initial seg- 

 ment terminating in a short spine; segments numerous; sutures 

 depressed; surface ornament of four equidistant longitudinal ribs, 

 sometimes continuous, sometimes only bridging the sutures and disap- 

 pearing on the body of the segment. Differs from N~. vertebralis in its 

 depressed sutures and the limited number of ribs. Length, about 

 4.5 mm. (j% inch)- 



Locality. Gulf of Mexico (station 2400), 169 fathoms. 



NODOSARIA COSTULATA Reuss. 

 (Plate 58, fig. 1.) 



In size and outline the same as N. pyrula, but with thicker walls and 

 having the surface ornamented with longitudinal ridges extending 

 sometimes continuously over the whole length of the segments, at other 

 times over only a part of its length. 



Locality. Gulf of Mexico (stations 2377, 2398), 210 and 227 fathoms. 



Genus LINGULINA. 

 Test straight, compressed; aperture typically a narrow fissure. 



LINGULINA CARINATA d'Orbigny. 

 (Plate 58, fig. 3.) 



Broad oval or ovate, the margin thin and slightly carinate, smooth; 

 segments four or five, embracing; sutures slightly if at all depressed; 

 aperture a narrow transverse fissure at the end of the final segment. 

 Length, about 1 mm. (^ inch). 



Locality. Coast of Georgia (station 2416), 276 fathoms. 



LINGULINA CARINATA, variety SEMINUDA Hantken. 

 (Plate 58, fig. 4.) 



Ovate, compressed, margins rounded, composed of a few (three to six) 

 segments, rapidly increasing in size, arranged in straight series; 

 sutures slightly depressed; surface smooth on the compressed sides, 

 ornamented on the margins with several delicate longitudinal ribs; 



