202 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 2 



of this paper, but differs entirely from it in general appearance. It is 

 quite similar to garthi of this paper but differs in the presence of stronger 

 series of pits near the middle of the whorls. 



This species is named for Mr. Alvin Seale, Superintendent of the 

 Steinhart Aquarium in San Francisco, California, who accompanied the 

 expedition. 



Turbonilla (Pyrglscus) amandi Strong & Hertlein, new species 



Plate 19, Fig. 7 



Shell elongate-conic, uniformly light brown ; nuclear whorls a little 

 more than 2, depressed helicoid, with the axis at right angles to that of 

 the following whorls, in the first of which they are about one fourth 

 immersed; postnuclear whorls 9, moderately rounded, sutures impressed; 

 axial sculpture of strong, narrow, nearly vertical ribs, of which 16 ap- 

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

 interspaces a little wider than the ribs, marked with 6 or 7 broad, 

 shallow, spiral series of pits, on the later whorls the spaces between 

 these pits are cut by 1 or 2 incised spiral lines; periphery of last 

 whorl well rounded ; base rather long, well rounded, the upper part 

 marked by continuations of the axial ribs between which are 3 or 4 

 spiral series of pits, at about the middle of the base the axial ribs 

 fade out and the spiral series of pits are joined to form incised spiral 

 lines which grow gradually weaker toward the umbilical region ; aper- 

 ture oval, outer lip thin, showing the external sculpture within; colu- 

 mella raised, slightly curved, body with a distinct callus. The type 

 measures: length, 4.3 mm; diameter, 1.1 mm. 



Holotype: No. 749 (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. Forty-five additional specimens were 

 dredged at the same locality. 



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

 genus Pyrgiscus,^^ this would follow abno, a species described from 

 San Diego, which it much resembles, differing principally in the ar- 

 rangement of the spiral series of pits in the interspaces between the axial 

 ribs. 



34 Dall, W. H., and Bartsch, P., U. S. Nat. Mus., Bull. 68, 1909, pp. 74, 75, 76. 



