64 BULLETIN 68, UNITED STATES NATIONAL MUSEUM. 



TURBONILLA (PYRGOLAMPROS) TAYLORl Dall and Bartsch. 



Plate 6, figs. 7, la. 



Turbonilla (Pyrgolampros) taylori Dall and Bartsch, Proc. U. S. Nat. Mus., 

 vol. 33, 1907, p. 499, pi. 44, figs. 9, 9a. 



Shell very regularly elongate-conic, purplish-brown. Entire sur- 

 face marked by numerous closely placed minute spiral striations. 

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

 immersed, having 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 slightly contracted 

 toward the periphery and very weakly beveled at the appressed 

 summits, marked by low, broad, retractive 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 last whorl they become irregular and 

 irregularly spaced, showing senility. The ribs become flattened and 

 less strongly defined toward the summit and the peripher}^ disap- 

 pearing at the well-rounded periphery. Sutures well marked. Base 

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

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

 brown within except at the very base, which is white; columella slen- 

 der, twisted, and slightly revolute anteriorly. 



The above description is based upon two cotypes (Cat. no. 196210, 

 U.S.N.M.); one, an immature specimen having the nucleus and 9 

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

 the other an adult individual having 10 whorls is minus the nucleus 

 and probably the first five post-nuclear turns, and measures: Length 

 11.5 mm., diameter 3.1 mm. 



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

 Taylor at Departure Bay, British Columbia. The cotypes and five 

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

 rest are in the Taylor collection. 



This species was collected at five additional stations in British 

 Columbia by the Rev. G. W. Taylor, all the specimens being in his 

 collection 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. 



TURBONILLA (PYRGOLAMPROS) LOWEI Dall and Bartsch. 



Plate 6, figs. 11, 11a. 



Turbonilla (Pyrgolampros) lowei Dall and Bartsch, Mem. Cal. Acad., vol. 3, 

 1903, p. 278, pi. 1, figs. 5, 5a. 



Shell elongate-conic, uniformly light brown. Nuclear whorls two, 

 small, depressed, helicoid, having their axis almost at right angles 



