li li 4 PROCEEDINGS OF THE VATIONAL UUSEl \l. vol.38. 



lucent whitish rounded whorls with a dimple nt the apex; of the 

 remaining eight and a half whorls the earlier five have the shoulder 

 irregularly, obscurely, minutely beaded; the slope from the nucleus 

 to the shoulder of the last whorl is slightly concave; the fasciole 

 between the shoulder and the suture behind it is depressed, with two 

 strong spiral sulci running in it, the interspaces rather tumid. The 

 coloration of the shell is peculiar; the pattern recalls C.tfeniatus and C. 

 it *s( //at iis. The ground is a subtranslucent waxen white; between the 

 shoulder and the canal there are about sixteen subequal, rectangularly 

 articulated, spiral bands separated by narrower spaces of the ground 

 color; the articulations are vermilion or orange red and opaque 

 white alternately; on the spire are nearly a dozen radiating orange 

 or vermilion flammules; the interior of the aperture is rosy white, 

 the region about the canal deep rose color; the only sculpture on the 

 sides of the shell consists of about six equidistant channeled sulci, 

 growing wider anteriorly until the canal is reached, and a few smaller 

 striae on the siphonal fasciole; the aperture is narrow, parallel-sided, 

 with a straight outer Up, the anterior and posterior sinuses moder- 

 ately deep. Height of shell, 25; of shoulder, 22 ; maximum diameter 

 of shell, 14; of canal, 3 mm. 



Type.— Cat. No. L30385, U.S.N.M. 



Although a small shell, it is one of the most lovely of the genus, 

 and its pattern of coloration only paralleled by one or two others in 

 the whole list of species. 



CONUS NUX Broderip, 1833. 



Ballenas Lagoon, Lower California, and south to Panama and 

 the Galapagos Islands. 

 This pretty little cone seems sufficiently distinct from the [ndo- 

 Pacific species with which it has been consolidated by Tryon. In 

 the large series extending the whole 1 length of its range which is in 

 the .National Collection it is somewhat strange that the largest speci- 

 men should be that from the most northern locality, Ballenas Lagoon. 

 It is the C pusiMus of Gould in 1851, but Lamarck's C. pusil/us of 

 lsl() was based on a West African shell. 



CONUS PRINCEPS Linmeus, 1758. 



( Jape St . Lucas to Panama. 



This well-known shell is very characteristic with its tufted perio- 

 stracum. The ('. regius of authors is an exact synonym, as both 

 diagnoses refer to the variety with broad stripes. ('. li/Koltitus Valen- 

 ciennes, 1 832, is t he variety in which t he st ripes are reduced to brown 

 hair hues, and which is the prevailing form from Panama to Peru. 



For the variety with the lines entirely absent 1 propose tin 1 name 

 ti /Ku/rtiiniiititus. Our specimens of this type are from Panama. 



