WEST AMERTC'AN PYRAMTDKLTJI) MOlJ.rSKS. 47 



ribs, of which 14 occur upon the first, 16 upon the second to sixth, 18 

 upon the seventh, 20 upon the eighth, 22 upon the ninth, and 25 

 upon the penultimate turn. Intercostal spaces almost as wide as the 

 ribs, well impressed, terminating a little distance posterior to the 

 suture. Sutures strongly marked. Periphery and rather long base 

 of the last whorl w^ell rounded, marked by the feeble continuations 

 of the axial ribs. Entire surface of base and spire marked by numer- 

 ous, strongly incised spiral striations, of which those on the spire 

 somewdiat exceed the ones on the base in strength. A])erture large, 

 oval; outer lip thin, showing the external sculpture within; colu- 

 mella slender, sigmoid, slightlj reflected. 



The type (Cat. no. 160210, U.S.N.M.) was collected by Lieutenant 

 Nichols in the Gulf of California. It has lost the nucleus. The 

 twelve remaining wdiorls measure: Length 8.8 mm., diameter 2.4 mm. 



TURBONILLA (STRIOTURBONILLA) TORQUATA Gould. 



Plate 4, fio-s. 15, 15r;. 



Chemnitzia torquata Gould, Bost. Journ. Nat. Hist., vol. 4, 1852, p. 384, pi. 14, 

 fig. 16; not Turhonilla {Striolurhonilla) torqiuita (Gouhv) Dall and Bartsch, 

 Mem. Cal. Acad. Sci., vol. 3, 1903, pp. 271, 272, pi. 2, figs. 4, 4a, which may 

 take the name Turhonilla (Strioturbonilla) ralphi Dall and Bartsch. 



Shell robust, bluish-white. Nuclear whorls small, two, depressed, 

 helicoid, having their axis at right angles to that of the succeeding 

 turns, in the first of which they are about one-fifth immersed. Post- 

 nuclear whorls well rounded, ornamented by strongly elevated, 

 slightl}^ protractive axial ribs, of which 16 occur upon all of the 

 whorls except the penultimate, wdiich has 22. Intercostal spaces 

 about twace as wide as the ribs, terminating a little above the summit 

 of the preceding whorl, thus leaving a narrow, plain band in the 

 suture. wSutures strongly impressed. Periphery of the last whorl 

 well rounded. Base moderately long, well rounded. Entire surface 

 of spire and base crossed by numerous very fine, closely spaced, wavy, 

 spiral striations. Aperture suboval, outer lip thin, showing the exter- 

 nal sculpture wdthin. Columella slender, decidedly curved, and 

 somewhat reflected. 



The specimen described and figured (Cat. no. 2059.34, U.S.N.M.) 

 has lost the nucleus. The eleven remaining wdiorls ::;easure: Length 

 6.5 mm., diameter 2.1 mm., and comes from off Point Firmin, Cali- 

 fornia. Another s})ecimen (Cat. no. 60916, U.S.N.M.) comes from 

 San Diego, California. Still another (Cat. no. 205935, U.S.N.M.) was 

 dredged at U. S. Bureau of Fisheries station 4322, in 110 to 197 

 fathoms, off La Jolla, California. Two additional specimens in the 

 University of California collection were obtained at their stations 22 

 and 28 off San Diego. ^Ir. Berry's collection contains two specimens 

 dredged in 40 fathoms off Catalina Island, California. 



