N0.1574. WEST AMERICAN rYRAMIBELLW.r.—DALL AND BARTSCH. 499 



Shell rather stout, yellow. 



Whorls concave between the sutures. , virfnrimia. 



Whorls not concave between the sutures. 



Shell stout and stubby valdezi. 



Shell broadly conic. 



TTnifonnly golden-yellow (iiirantia. 



Anterior half between the sutures yellow, posterior half white. 



iiem'omhei. 

 Vertical ribs obsolete oregonnifiis. 



TURBONILLA ( PYRGOLAMPROS) TAYLORI, new species. 

 Plate XLIV, tigs. 9, 9r/. 



Shell very reg-ularly elong-ate-conic, purplish-brown. Entire .sur- 

 face marked by numerous closely placed minute spiral striations. 

 Nuclear whorls small, depressed helicoid, smooth, scarcely at all 

 immersed, haying their axis at a right angle to that of the later turns, 

 the sides not projecting beyond the outline of the spire. Post-nuclear 

 whorls quite high between the sutures, only slightl}^ contracted 

 toward the periphery and yery weakly beyeled at the appressed 

 summits, marked by low, broad, retractiye axial ribs, which are 

 much more numerous and less strongly defined on the early whorls 

 than on those succeeding. There are about 36 on the second, 30 

 upon the third, 24 upon the fourth, and 26 upon the antepenultimate 

 post-nuclear turn. On the las-t whorl the}" become irregular and 

 irregularly spaced, showing senility. The ribs become flattened and 

 less strongl}^ detined toward the summit and the periphery, disap- 

 pearing- at the well-rounded peripher3\ Sutures well marked. Base 

 short, inflated, rounded. Aperture suboval, somewhat efluse anteri- 

 orly, posterior angle acute; outer lip thin, white edged, chestnut 

 brown within except at the yer}^ base, which is white; columella slen- 

 der, twisted, and slightly reyolute anteriorl}". 



The aboye description is based upon two cotypes (Cat. No. 196210, 

 U.S.N.M.): one, an immature specimen haying the nucleus and 9 

 post-nuclear whorls measures: length 6.5 mm., diameter 1.9 mm., the 

 other an adult indiyidual having 10 whorls (is minus the nucleus and 

 probably the first fiye post-nuclear turns) and measures: length 11.5 

 mm., diameter 3.1 mm. 



The two cotypes and 30 specimens were collected by the Key. G. W. 

 Taylor at Departure Bay, British Columbia. The cotype and fiye 

 specimens are in the U. S. National Museum (Cat. No. 196210). The 

 rest are in the Taylor collection. 



This species was collected at fiye additional stations in British 

 Columbia by the Rey. Doctor Taylor, all the specimens being in his col- 

 lection except where otherwise stated. One specimen at Carter Bay; 

 3 at Port Simpson, 1 of which is Cat. No. 196211, U.S.N.M.; 11 at 

 Banks Island, 3 of which are Cat. No. 196212, U.S.N.M.; 6 at Alert 

 Bay, 2 of which are Cat. No. 196213, U.S.N.M. 



