124 I'llK NAUTII IS. 



sniootli, turgid nuclear wliorl, gradually increasing, --uliinl nlaie i)y a 

 prominent spiral thread at the shoulder while }oupg, rouuchd at the 

 last whorl, with 8 or 9 obscure riblets on the upper part of the spire, 

 which are obsolete ou the last whorl and a halt'; spiral sculpt ui-e of 

 rounded threads, with wider flatfish, somewhat irregular inters|>aces; 

 peristome continuous with a slight notch or sulcus near the end of 

 the nearly straight pillar, and with no umbilicus; there are two ob- 

 scure plaits on the pillar, which is not marked by any umbilical chink 

 or fissure; aperture with the external sculpture modifying the inar;:in. 

 but no lirations. Lon. of shell 90; of aperture 4.0; max. diani 4.5 

 ni ni . 



This is less strongly sculptured, more slender and with a less ar- 

 cuate pillar than any of the other Admetes of the coast, and belongs 

 in the group half way between such Cancellarias as G. modesta and 

 Admete gracilior Carpenter. It has very much the form of G. cit" 

 cumcarinata Dall,on a smaller scale and with a more acute spire. 



Erato albescens n. sp. 



U. S. Fish commission station 4431, California. Shell whitish, thin 

 and polished, with four whorls; the spire low and nearly covered 

 with a thin glaze extending from near the aperture ; shell bluntly 

 pyriform with a wide mouth, smooth pillar, the outer lip thickened, 

 obscurely marginate externally, with about nine obscure distant den- 

 ticulations internally, pillar short, twisted, with a flaring edge and 

 almost gyrate axis; the body with a thin wash of callus, but, in the 

 type no sign of pustulation. Lon. of shell 15,0; of aperture 13.5; 

 max. diam. 10,0 mm. 



This succeeds E. vitellina Hinds as the largest species of the genus 

 and is a much thinner and ligliter shell, beside differing in color. 



Scissurella (Schtzotrochus) kelseyi n. sp. 



California at U. S. Fish Com. Station 4353, also off San Diego. 



Shell large for the genus, trochiform, white, with about four 

 rounded whorls, sculptured with fine (forwardly convex) arcuate 

 threads or raised lines, which above the fasciole are spirally micro- 

 scopically striate, and on the base, with somewhat regularly spaced 

 and stronger spirals ; the fasciole is narrow, slightly above the 

 periphery, bounded by two sharp, very thin, elevated keels; the slit 



