238 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 6 



Test small, fusiform, composed of two to three whorls, initial end in 

 the megalospheric form subacute to rounded, in the microspheric fonn 

 more acute; chambers distinct, slightly inflated, seven to ten in the final 

 whorl ; sutures distinct, slightly depressed, slightly curved ; wall smooth ; 

 aperture narrowly elongate, near the upper end of the apertural face 

 which is narrow and depressed. Length 0.25-0.40 mm; breadth 0.13- 

 0.18 mm. 



d'Orbigny's original specimens were from the Pacific, off Peru, 

 Bolivia, and Chile. The species has been recorded from very wide areas 

 of the present oceans and as a fossil throughout most of the Tertiary. 



Stations: A-1, A-2, A-4, Or. 7, Or. 8, Or. 9, Or. 10, 5, 14, 39, 54, 

 58, 60, 76, 118, 204, 213, 264, 315, 502, 564, 626, 629, 659, 1005, 1014, 

 1041, 1061, 1092, 1096, 1097, 1122, 1159, 1161, 1231, 1232, 2004, 

 2093, 2135. 



Distribution. — The above stations represent a range of this species 

 from Alaska southward to Pena. 



Buliminella elegantissima (d'Orbigny), var. limbosa 



Cushman and McCulloch, new variety 



Plate 29, Fig. 5 



Variety differing from the typical in having coarser, strongly Umbate 

 and slightly raised sutures; fewer chambers to a whorl; the aperture 

 more nearly terminal and more rounded. 



Holotype of variety (AHF no. 50) from Station 535, in 22 fathoms, 

 off Lobos de Afuera Island, Peru. 



This variety seems to be quite distinct from the typical form and not 

 occurring with it. 



Stations: C-2, C-11, C-13, 64, 529, 534, 535, 550, 577, 579. 



Distribution. — The variety from the material of the above stations 

 ranges from the coast of southern California southward to the coast of 

 Peru. 



Buliminella elegantissima (d'Orbigny), var. tenuis 



Cushman and McCulloch, new variety 



Plate 29, Fig, 6 



Variety differing from the typical in the very elongate, slender form 

 with the aperture subterminal, small and rounded. 



Holotype of variety (AHF no. 51 ) from Station 1019, in 20 fathoms, 

 off Cuyler Harbor, San Miguel Island, California. 



