NO. 2288. NEW MOLLUSKS OF THE FAMILY TURRITIDAE—DALL. 13 



striated anal fasciole; axial sculpture of (on the last whorl 10) 

 prominent protractive ribs extending from the fasciole to the suc- 

 ceeding suture on the spire and somewhat over the periphery on the 

 last whorl; these ribs are knob-like and prominent on the periphery 

 and rapidly diminish forward; incremental sculpture faint; spiral 

 sculpture begins on the early whorls with about four faint striae 

 which grow sharper on the later whorls which carry four or five 

 grooves with wider flattish interspaces between the periphery and 

 the succeeding suture, with on the later whorls sometimes one or two 

 on the anal fasciole, on the last whorl there are 16 or more in all ; the 

 last rib on the last whorl is more swollen than the others and usually 

 darker in color; aperture narrow, outer lip thin, sharp, produced, 

 smooth internally with a deep rounded anal sulcus close to the suture 

 with a heavy lump of callus on the side of the body ; inner lip with a 

 rather thick callus with a raised edge extending to the end of the 

 pillar; canal short, wide, deeply cut, with a small keel bordering 

 the posterior edge of the siphonal fasciole. Operculum dark brown. 

 Height of shell, 13 ; of last whorl, 6.5 ; diameter, 4.8 mm. Cat. No. 

 266371, U.S.N.M. 

 Bange.—Agasi Verde Bay, Gulf of California, Dr. Paul Bartsch. 



? ELAEOCYMA AEROPE, new species. 



riiite 1, fig. 3. 



Shell small, acute, whitish, with a polished, smooth, trochiform 

 nucleus of about two and a half whorls and eight or more subsequent 

 whorls ; suture distinct, slightly appressed, anal fasciole slightly con- 

 stricted ; spiral sculpture of sharp narrow grooves, with much wider 

 flat smooth interspaces ; there are about eleven of the grooves on the 

 last whorl between the shoulder and the spirally threaded siphonal 

 fasciole; the anal fasciole is not spirally striate; axial sculp- 

 ture of (on the last whorl about 10) sharp-edged ribs, with 

 wider interspaces, compressed and arcuate on the anal fasciole, nearly 

 vertical elsewhere and extending over the whole whorl, but not con- 

 tinuous over the spire; incremental lines inconspicuous; aperture 

 rather wide and short with a deep rounded anal sulcus and prominent 

 subsutural callosity; outer lip subvaricose, sharp-edged, smooth 

 within ; inner lip with a thick layer of enamel ; its outer edge raised 

 with a slight chink between it and the siphonal fasciole ; pillar short, 

 straight; canal deep, short, wide, and slightly recurved. Height of 

 shell, 16; of last whorl, 8; diameter, 6 mm. Cat. Nos. 266398, 

 U.S.N.M. (showing nucleus) and 266311, U.S.N.M. (adult shell). 



Bange.—Agua Verde Bay, Lower California, Dr. Paul Bartsch. 



The specimen has a dull surface, which is probably due to wear. 



