48 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



BOLIVINA SUBSPINESCENS. new species. 



Plate 7, fig. 5. 



Description. — Test minute, elongate, tapering, apical end bluntly- 

 pointed, apertural end angular, periphery lobulated; chambers 

 distinct, angular, concave, ventral, the outer portion smooth, the 

 lower angle finely spinose; sutures distinct, depressed, wall calcareous, 

 outer part smooth, remainder covered with short close-set spines, in 

 the early portion granular, roughened; aperture rounded; color 

 white. 



Length 0.15-0.25 mm. 



Distribution. — Type-specimen (U.S.N.M. No. 17080) from Alba- 

 tross station D2192, in 1,060 fathoms (1,938 meters), off the northeast 

 coast of the United States. Similar specimens have also occurred at 

 scattered stations in the Gulf of Mexico and in the Caribbean. 



This species is somewhat similar to B. spinescens Cushman, but 

 the angular form of the chambers is much more marked and the whole 

 more definitely tapering. This may be possibly the same as the Euro- 

 pean material referred to B. textilarioides Reuss. It is a very small 

 species, but its characters seem to be very definite. 



Bolivina subspinescens — material examined. 



BOLIVINA TEXTILARIOIDES Reuss. 



Under this name numerous authors record specimens from about 

 the British Isles, off the Abrohlos Bank, off Burdwood Bank, and 

 in the Indo-Pacific. The earlier records from the British Isles were 

 confused with B. laevigata. Apparently the northern Atlantic 

 material is not closely like that of Reuss. Brady's figure in the 

 Challenger Report referred to this species is also different from that 

 of Reuss as I have previously noted (pt. 2, 1911, p. 46). There is 

 nothing in the western Atlantic material which can be referred to 

 it. The nearest is the species here described as B. subspinescens. 



