NO. 5 CUSHMAN AND MCCULLOCH : SOME BULIMINIDAE 241 



Robertina californica Cushman and Parker 

 Plate 29, Fig. 10 



Robertina californica Cushman and Parker, Contr. Cushman Lab. 

 Foram. Res., vol. 12, 1936, p. 97, pi. 16, fig. 14. — Cushman and Gray, 

 Special Publ. No. 19, Cushman Lab. Foram. Res., 1946, p. 28, pi. 5, figs. 

 7-9.— Cushman and Parker, U.S. Geol. Survey Prof. Paper 210-D, 1947, 

 p.74,pl. 18,fig. 11. 



Test nearly twice as long as broad, initial end subacute, tapering, 

 apertural end broadly rounded ; chambers very slightly inflated, increas- 

 ing gradually and regularly in size as added, about eight or nine pairs 

 composing the final vrhorl; sutures little if at all depressed, strongly 

 limbate; wall smooth; aperture very narrow, elongate, running more 

 than half way up the apertural face, nearly straight, secondary aperture 

 low, elongate. Length 0.28 mm; breadth 0.13 mm. 



This species is known only from the Pliocene of southern California. 

 Rare specimens were found at Stations 73 and 80 which seem to belong to 

 this species. They are from ofif the coasts of southern California and 

 Mexico. 



Robertina charlottensis ( Cushman) 

 Plate 30, Figs. 1, 2 



Cassidulina charlottensis Cushman, Contr. Cushman Lab. Foram. 

 Res., vol. 1, pt. 2, 1925, p. 41, pi. 6, figs. 6, 7; vol. 1, pt. 3, 1925, p. 53, 

 pi. 8, figs. 17, 18. 



Robertina charlottensis Cushman, idem, Special Publ. No. 5, 1933, 

 pi. 27, fig. 9. — Cushman and Parker, idem, Contr., vol. 12, 1936, p. 97, 

 pi. 16, fig. 12. — Cushman and Todd, ideiii. Special Publ. No. 21, 1947, 

 p. 18, pi. 3, fig. 2. — Cushman and Parker, U.S. Geol. Survey Prof. Paper 

 210-D, 1947, p. 74, pi. 18, fig. 14. 



Test about twice as long as broad, strongly spiral, greatest breadth at 

 about the middle, in front view one side nearly straight, the other 

 strongly convex, initial end subacute, rapidly tapering, apertural end 

 obliquely rounded, truncate; chambers slightly if at all inflated, increas- 

 ing gradually and regularly in size as added, nine or more pairs making 

 up the final whorl; sutures distinct, strongly limbate; wall smooth; 

 aperture elongate, somewhat open, running half way up the apertural 

 face, slightly curved, secondary aperture elongate, low. Length up to 1 

 mm ; breadth up to 0.55 mm. 



The types are from Queen Charlotte Sound. 



