478 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.53. 



to which Carpenter referred it as a variety. It is notable that the 

 brown line, so distinct in fresh specimens, gradually fades out in the 

 cabinet, though kept in the dark. The range of this species is from 

 Monterey to the Gulf of California. 



In 1856 Carpenter described from Panama a species of Nitidoscala 

 with eight varices, under the name of S. hindsii. By some confusion 

 he transferred the name in 1865 to a well-known form from California 

 which has 11 to 14 varices and ranges from Monterey to the Gulf of 

 California, but so far as known does not reach Panama. For the 

 Calif ornian shell I propose the name of Epitonium (Nitidoscala) fob- 

 laciosum. 



Other species are E. subcoronatum Carpenter, 1869 (Spiniscala De 

 Boury, 1910), with 11 varices, ranging from Vancouver Island to San 

 Diego; E. acrostepJianus Dall, 1908, with 14 to 17 varices, ranging 

 from Monterey to the Coronado Islands; and E. crehricostatum Car- 

 penter, 1869, with 9 to 11 varices, ranging from Vancouver Island to 

 the Gulf of California. This latter is not S. (Funis) crehricostata 

 Stanley Gardner, 1876. 



Undescribed forms related to the preceding are as foUows: 



EPITONIUM DENSICLATHRATUM, new species. 



Shell white, solid, with 6 or 8 weU-rounded whorls exclusive of 

 the (lost) nucleus; varices 10 or 11, sharply axially grooved on their 

 anterior faces, solid, thick, not continuous over the suture, on the 

 base showing a slight flattening, though there is no basal cord or 

 disk; aperture ovate; behind the inner margin there is a narrow 

 flattened area reflected over the umbihcal region in the type-speci- 

 men. Length, 17; diameter, 7.5 mm. U. S. Nat. Mus. Cat. No. 

 111209. Range, Puget Sound and Neeah Bay, Washington. 



This form was segregated by Carpenter in the Stearns collection 

 under the above name, but never published. 



EPITONIUM PERSUTURUM, new species. 



Shell with three smooth brown nuclear and five subsequent thin 

 white whorls separated by an unusually deep suture; varices 10, nar- 

 row, rounded, continuous up the spire which they encircle about haK 

 way, but not expanded at the suture into which they dip ; the whorls 

 are sUghtly flattened above the shoulder, but there is no correspond- 

 ing angle or spine on the varices. Length, 15.5; diameter, 6 mm. 

 U. S. Nat. Mus. Cat. No. 211021. Range, beach at San Diego, 

 CaUfornia. 



EPITONIUM COLPOICUM. new species. 



Shell white, with one blunt nuclear and five subsequent, rapidly 

 enlarging weU-rounded whorls; varices nine, continuous over the 

 suture, which is deep, and so expanded there as to form pit-like cavities 

 of the interspaces ; the varices are thin, sharp, rather wide, and hardly 



