NO. 12 STRONG AND HERTLEIN : MARINE MOLLUSKS 203 



This species is named for Dr. Rudolph Amandus Philippi, pioneer 

 in studies of the natural history in Chile, whose works have added much 

 to the knowledge of that region. 



Turbonilla (Pyrgiscus) bartonella Strong & Hertlein, new species 



Plate 19, Fig. 8 



Shell minute, elongate-conic, pale j^ellowish with a narrow brown 

 spiral band a little below the middle of the whorls; nuclear whorls 

 2^/2, relatively large, planorbid, with the axis at right angles to that of 

 the following whorls, in the first of which they are slightly immersed ; 

 postnuclear whorls 8, well rounded, sutures impressed; axial sculpture 

 of nearly vertical, slightly sinuous ribs, of which 16 appear on the 

 early whorls, gradually increasing to 24 on the last whorl; interspaces 

 about as wide as the ribs, marked with 2 spiral series of broad pits near 

 the base, above which are about 12, equally spaced, incised, spiral lines; 

 periphery of last whorl well rounded, marked by a narrow, smooth 

 band ; base rather long, well rounded, marked by a single spiral series 

 of pits just below the periphery, then a second, narrow, smooth band, 

 followed by 5 fine, incised, spiral lines; aperture oval, outer lip thin, 

 showing the external sculpture within; columella slender, curved. The 

 type measures: length, 2.8 mm; diameter, 0.7 mm. 



Holotype: No. 752 (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. Eight additional specimens were 

 dredged at the same locality. 



In the key given by Dall & Bartsch to the west coast species in the 

 subgenus Pyrgiscus,^^ this would follow almo, and amandi of this paper 

 from which it differs in the much smaller size and different arrange- 

 ment of the spiral series of pits. 



This species is named for the late Dr. Barton Warren Evermann, 

 formerly Director of the California Academy of Sciences and of the 

 Steinhart Aquarium. 



Turbonilla (Asmunda) turrita C. B. Adams 



Chemnitzia turrita C. B. Adams, Ann. Lyceum Nat. Hist. New York, 

 vol. 5, July, 1852, pp. 393, 536. "Panama." 

 Four young specimens which appear to be Turbonilla turrita C. B. 



35 Dall, W. H., and Bartsch, P., U. S. Nat. Mus., Bull. 68, 1909, pp. 74, 75, 



76. 



