NO. 1903. WEST AMERICAN PYRAMIDELLID MOLLVSKS—BARTSCn. 267 



and 28 upon the penultimate turn. Intercostal spaces about 1 h times 

 as wide as the ribs, marked b}' a double series of large pits of which 

 one is at the peripher}', the other a little posterior to the middle 

 between the sutures. In addition to tliese pits, the intercostal spaces 

 are marked by 11 fine, incised lines between the summit and the 

 median series of pits and 18 between the median and the peripheral 

 pits. These fine incised lines are of about equal strength and spacing. 

 They do not extend from the intercostal spaces at the suture where a 

 very narrow band is left ■wdthout sculpture. The depressed inter- 

 costal spaces and ribs terminate at the well rounded periphery of the 

 last whorl. Suture well impressed. Base of the last whorl moder- 

 ately long, marked by 24 fine incised spiral lines, which are a little 

 closer spaced near the umbihcus than at the peripheiy. Aperture 

 subquadrate; posterior angle acute; outer lij) tliin, showing external 

 markings ^^■itllin; imier lip sUghtly sinuous, feebh'' reflected \\'ith a 

 slender fold a Httle anterior to its insertion; parietal wall closed with 

 a fine callus. 



The type (Cat. No. 211550, U.S.N.M.) has ten whorls and measures: 

 Length, 6.9 mm.; diameter, 1.7 mm. It was collected by Mss J. M. 

 Cooke in Gulf of California and is named for her. 



This species follows Turhonilla (Strioturhonilla) gradlior in the key. 



TURBONILLA (PYRGOLAMPROS) TALMA Dall and Bartsch, 



Plate 35, fig. 7. 



Turbonilla (Pyrgolampros) talma Dall and Bartsch, Dep. Mines, Geol. Surv., 

 Canada, 1910, pp. 13-14, pi. 2, fig. 3. 



Shell, broadly elongate-conic, dark chestnut brown, wax-yellow at 

 the apex and the columellar area. Nuclear whorls decollated. 

 Post-nuclear whorls moderately rounded, feebly shouldered at the 

 summit, marked by strong, well-rounded, axial ribs, of which 18 

 occur upon each of the turns. Intercostal spaces about two-thirds 

 as wide as the ribs, well impressed. Sutures strongly impressed. 

 Periphery of the last whorl well rounded. Base moderateh' long, 

 and well rounded, showing scarcely any traces of the axial ribs. 

 Entire surface of spire and base crossed by numerous fine, closely 

 spaced, spiral striations. Aperture oval; posterior angle acute; 

 outer lip thin, showing a lighter band half way between the periphery 

 and the summit, in the general chestnut coloration; inner lip 

 slender, twisted and slightly revolute, white. 



Two specimens of this species were dredged in Barkley Sound, 

 Vancouver Island, British Columbia, one of which is in the Geological 

 Survey Museum, Ottawa; the other in the collection of the United 

 States National Museum, Cat. No. 211537. One of these has lost 

 the nucleus, the 10 remaining whorls measuring: Length, 9 mm.; 

 diameter, 2.8 mm. 



This species follows Turhonilla {Pyrgolampros:) taylori in the key. 



