40 BULLETIN 68, UNITED STATES NATIONAL MUSEUM. 



increasing very regularly in size, high between the sutures, almost 

 appressed at the summit and ornamented by well-developed, rounded, 

 axial ribs, of which there are 16 upon the second and third, 18 upon 

 the fourth, 20 upon the fifth to eighth, 22 upon the ninth and penulti- 

 mate whorls. Intercostal spaces deej), about one and one-half times 

 as wide as the ribs. Sutures strongly impressed, rendered slightly 

 wavy by the ribs. Periphery of the last whorl angulated. Base 

 short, well rounded. Aperture subquadrate. Columella short, 

 slightly curved and somewhat oblique. 



The type (Cat. no. 206849, U.S.N.M.) was dredged off Catalina 

 Island. It has eleven postnuclear whorls and measures: Length 

 6.2 mm., diameter 1.6 mm. Another specimen from the same local- 

 ity is in the University of California, which also has a specimen 

 dredged off San Diego. Cat. no. 163252a, U.S.N.M., contains a speci- 

 men dredged at U. S. Bureau of Fisheries station 2901, off Santa Eosa 

 Island, in 48 fathoms. Cat. no. 206850, U.S.N.M., contains another 

 specimen from San Diego, California. 



Named for Prof. William J. Raymond. 



Subgenus STRIOTURBONILLA Sacco. 

 Strioturbonilla Sacco, I Moll, del Piemonte e (;k41a Liguria, 1892, p. 94. 



Shell as in Turhonilla and Cliemnitzia but finely and closely spirally 

 striated on the spire and base. 



Type. — Strioturbonilla alpina Sacco. 



All our West American species, with the exception of T. (ijfinis and 

 T. smithsoni, are of blueish- white to milk-white color; the two excep- 

 tions being of a yellowish cast. 



KEY TO THE SPECIES OF THE SUBGENUS STRIOTURBONILLA. 



Spiral striations extending uniformly over the axial rib.s and intercostal spaces be- 

 tween the sutures. 

 Intercostal spaces terminating posterior to the periphery, having a plain, smooth 

 band in the suture. 



Intercostal spaces pinched in to form a step immediately below the sum- 

 mit stephanogyra, p. 42. 



Intercostal spaces not pinched in at the summit. 

 Axial ribs exceedingly protractive. 



Axial ribs straight panamensis, p. 42. 



Axial ribs sinuous huttoni, p. 43. 



Axial ribs moderately protractive. 

 Whorls overhanging. 



Axial ribs 10-18 vancouverensis, p. 44. 



Axial ribs 14-22 asser, p. 45. 



