194 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.2 



the shell; over the body of the shell the varices are narrowly, sharply 

 reflected and at the shoulder expanded to form broad, nearly vertical 

 spines; on the base they continue without change to the columellar lip; 

 spiral sculpture absent; aperture nearly circular; columellar lip curved, 

 reflected over the ends of the varices and extending posteriorly to the 

 junction with the outer lip which is thickened by the last varix. The 

 type measures: length, 7.2 mm; diameter, 4.4 mm. 



Holotype: No. 725 (Calif. Acad. Sci. Paleo. Type Coll.), from 

 Loc. 27,229 (C.A.S.), dredged in from 3 to 9 fms. in Bahia Honda, 

 Panama. L. G. Hertlein collector. One additional very young specimen 

 was dredged at the same locality. 



The broad shape and small number of coronating varices will serve 

 to distinguish this species from all known species on the west coast 

 of the Americas. 



This species is named for Captain D. H. Wurtsbaugh, U. S. Navy 

 (retired), who accompanied the expedition, during which the present 

 species was collected. 



Epitonium (Nitidiscala) gissleri Strong & Hertlein, new species 



Plate 18, Fig. 8 



Shell small, pure white; nuclear whorls 3, smooth, forming a regu- 

 lar continuation to the turreted spire; postnuclear whorls 6, well 

 rounded, separated by a deep suture, regularly enlarging; axial sculp- 

 ture of 8 high, rather thick varices which meet and fuse in the sutures 

 and ascend the spire in a continuous line approximately parallel with 

 the right side of the shell; over their entire length these varices are nar- 

 rowly reflected, and only show a slight angle at the shoulder of the 

 whorls; on the base the varices continue without change to the junction 

 with the columellar lip; spiral sculpture absent; aperture nearly circu- 

 lar ; columellar lip curved, broad and much thickened anteriorly, extend- 

 ing posteriorly to the junction with the outer lip which is thickened by 

 the last varix. The type measures : length, 4.8 mm ; diameter, 2.3 mm. 



Holotype: No. 723 (Calif. Acad. Sci. Paleo. Type Coll.), from 

 Loc. 27,228 (C.A.S.), dredged in from 3 to 9 fms. off Taboga Island, 

 Panama. L. G. Hertlein collector. Six additional specimens were 

 dredged at the same locality. 



The small size and small number of high, thick varices will serve 

 to distinguish this species from all known species on the west coast. 



