28 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 70 



front of the carina which slightly cut the ribs in crossing them; anal 

 fasciole wide, extending from the carina to the coronation of the sutm-e; 

 base moderately convex, pillar short, smooth, obliquely truncate; 

 outer lip thin, sharp; canal wide and short. Length, 3; diameter, 

 1.5 mm. U. S. Nat. Mus. Cat. No. 107958. 

 One specimen off Fernandina. 



GYMNOBELA ? ILLICITA, new species 



Shell minute, white, with a brown Sinusigera nucleus of two and a 

 half and four subsequent whorls; spire acute, suture appressed, some- 

 what constricted; anal fasciole rather wide, crossed by retractively 

 concave wrinkles; axial sculpture of about 10 prominent ribs, wider 

 and slightly angulate at the periphery, varying in number in different 

 specimens, up to 12, and extending nearly across the whorls, but obso- 

 lete on the base and on the anal fasciole; spiral sculpture of two or 

 three prominent threads near the periphery, over riding the ribs and 

 half a dozen smaller ones on the base; base moderately convex, aper- 

 ture subovate, the outer lip thin and protractively arcuate; pillar- 

 straight, obliquely truncate in front; canal rather wide, slightly re- 

 curved. Length, 3.5; diameter, 1.2 mm. U. S. Nat. Mus. Cat. No. 

 107942. 



Five specimens off Fernandina. 



GYMNOBELA? LANCEATA, new species 



Shell minute, white, acute, with a Sinusigera nucleus of four and 

 two subsequent whorls; suture appressed, bordered in front by close,, 

 short, axial wrinkles; anal fasciole slightly concave, wide, extending 

 to the angle at the shoulder; axial sculpture of about 15 low, short 

 oblique ribs most prominent at the shoulder, with wider interspaces and 

 obsolete in front of the periphery; spiral sculpture of faint spiral 

 striations visible only under the lens; aperture subovate, canal long,, 

 narrow, straight, pillar straight, attenuated in front. Length, 3 ; diam- 

 eter, 1.5 ram. U. S. Nat. Mus. Cat. No. 107962. 



One specimen off Fernandina, perhaps immature. 



GYMNOBELA? GRUNDIFERA, new species 



Shell small, biconic, white, with a brown rounded Sinusigera nucleus 

 of three and three subsequent whorls; suture appressed, minutely 

 crenulated by the ends of the axial sculpture in front of it; anal sul- 

 cus wide and only moderately deep; the fasciole wide, sculptured with 

 retractively arcuate, sharp, elevated lines ; other axial sculpture of well 

 marked incremental lines, and faint narrow indications of obsolete 

 ribbing; spiral sculpture of a single strong peripheral keel, about eight 

 slender low threads with wider interspaces in front of it, minutely 

 crenulate by the axial sculpture, and much closer fine threading on 

 the canal; base moderately rounded; pillar straight, attenuated in 



