322 FROCEEDINOS OF THE NATIONAL MUSEUM. vol. 56 



Type-locality. — U. S. Fish CommLssion station 4405, between Santa 

 Catalina and San Clemente Islands, California, in 654 to^704 fathoms, 

 mud; bottom temperatui'e, 39.4° F. 



COLUS (LATISIPHO) DALMASIUS, new species. 



Shell of moderate size, acute, white, covered with a dark reddish 

 brown periostracum with a subglobular polished nucleus of about one 

 whorl and six subsequent well-rounded, rapidly enlarging whorls; 

 sutm'e distinct, not appressed; axial sculptm'e of feeble incremental 

 lines; spiral sculptm'e of numerous flattened threads with narrow 

 obscurely channeled interspaces, coarser on the canal; apertm-e wide, 

 outer lip thickened, arcuate, slightly expanded; body with'aphin 

 white layer of callus, pillar short, twisted; canal wide, short, strongly 

 recurved; height of shell, 35; of last whorl, 25; of apertm-e, 18; 

 diameter, 20 mm. U. S. Nat. Mus. Cat. No. 122631. 



Type-locality. — U. S. Fish Commission station 2862, off£the^coast 

 of British Columbia, in 238 fathoms, sandy bottom. 



This is a dwarfish imitation of L. errones. 



CHRYSODOMUS SMIllNIL'S, new species. 



Shell of moderate size, acute, livid purple-bro\vn, with a semitrans- 

 lucent whitish overlayer, and a thin dehiscent olivaceous periostra- 

 cum; nucleus small, irregularly swollen, of about one whorl, with 

 about five subsequent whorls; the earlier two or thi-ee whorls have 

 fom- or five low, wide, flat sphal cords with obscurely channeled inter- 

 spaces, these rapidly become obsolete and the last whorl appears 

 quite smooth except for fine sflky incremental lines; sutm-e distinct, 

 somewhat appressed; apertm-e wide, ovate, angular behind, the 

 outer lip expanded, white, the thi-oat dark brown, the body with a 

 thin glaze which extends to the pUlar, which is twisted and attenu- 

 ated; the canal short, wide, somewhat recm'ved; operculum normal. 

 Height of shell, 50; of last whorl, 39; of apertm-e, 30; maximum 

 diameter, 26 mm. U. S. Nat. Mus. Cat. No. 130418. 



Type-locality. — U. S. Fish Commission station 3461, in the Straits 

 of Fuca, in 114 fathoms, sand, bottom temperatm*e 44.2° F. The 

 species ranges northward to Bering Sea. The type-specimen is a 

 female. 



CHRYSODOMUS NUCELS, new species. 



Shell small for the genus, solid, yellowish, rather acute, with six 

 whorls exclusive of the (lost) nucleus, suture distinct, naiTOw, deep; 

 spu-al whorls flattish behind the periphery at which there is an 

 obscure angle; m front of this are a few obscm-e spu-als, indicated by 

 color rather than elevation in the type-specimen; incremental lines 

 inconspicuous, rather rude; apertm-e white, outer^lip sharp, slightly 

 expanded: bod}^ and pillar with a thick white enamel; canal short, 



