290 REPORT OF NATIONAL MUSEUM, 1897. 



Genus BULIMINA. 

 Test spiral, elongate, more or less tapering; often triserial. 



BULIMINA ELEGANS d'Orbigny. 

 (Plate 36, fig. 3.) 



Very small, slender, elongate, tapering to a spinous point, more or 

 less compressed on three sides; segments numerous, a little inflated, 

 arranged in three longitudinal rows; aperture on the oblique face of 

 the final segment ; walls very thin and transparent and finely perforated. 

 Length, about 0.75 mm. (gV inch). 



Locality. — Off Block Island (station 2584}, 541 fathoms. 



BULIMINA PYRULA d'Orbigny. 

 (Plate 36, figs. 4, 5.) 



Ovate, very slightly compressed, with exceedingly thin and trans- 

 parent walls finely but distinctly perforated; segments erect and over- 

 lapping, the last three sometimes inclosing all the others; aperture in 

 general ovate, but varying much in form, with a prominent overlapping 

 lip. Length, about 1 mm. (-^ inch). 



Lock lilies. — South of Marthas Vineyard, Straits of Yucatan, Gulf of 

 Mexico, west coast of Patagonia (stations 2212, 2352, 2383, 2571, 2784), 

 194 to 1,350 fathoms. 



BULIMINA PYRULA, variety SPINESCENS Brady. 



(Plate 37, tig. 1.) 



In form and general characters identical with B. pyrula, but varies 

 from the latter in that the base or aboral end is beset with more or less 

 numerous short spines. 



Locality. — Off the mouth of Chesapeake Bay (station 2203), 430 

 fathoms. 



BULIMINA AFFINIS d'Orbigny. 

 (Plate 37, fig. 2.) 



Test ovate; segments short and inflated, the later ones covering 

 more of the end and less of the sides of the test than in B. pyrula. 

 The specimens in hand have a brownish tinge, excepting the final seg- 

 ment, which is white. 



Locality. — Collected in the channel between Patagonia and Welling- 

 ton Island (station 2784), 194 fathoms. 



BULIMINA PUPOIDES d'Orbigny. 

 (Plate 37, fig. 3. v ) 



Oval or ovate, with short segments but slightly inflated, the whole 

 test rather conspicuously resembling the pupa of certain insects. 

 Locality. — Gulf of Mexico (station 2394), 420 fathoms. 



