12 Hazcaiian Species of Helicina . 



Helicina lymaniana, u. sp. 



Fig. 12. 



The shell is semiglobose, with the periphery rounded, quite 

 thin, nearly smooth, not polished, minutely striate with lines of 

 growth and with a few slightly raised longitudinal striae on the 

 last whorl. Color a pale dull red under a yellowish cuticle. Spire 

 very convex. Suture well impressed, simple. Whorls about 4, 

 slightly convex, regularly increasing, the last slowly but rather 

 deeply descending in front, well rounded. Aperture contracted, 

 very oblique, small, semicircular; outer lip slightly thickened, 

 minutely duplicate above. Callus whitish, reddish towards the 

 outer edge, thick, minutely punctate. Operculum wanting. Maj. 

 diam. 3.0, total length 3.0 mm. 



Oahu : Waialua (Lyman). 



Type No. 14,910, Bishop Museum. 



Another form from Waihiawa, Oahu, though slightly larger, 

 undoubtedly belongs to this species. 



Lymaniana is somewhat related to H. uberta Gld. Its smaller 

 size and more globose form easily separate it from Gould's species. 



Helicina juddii, n. sp. 



FiK- 13- 



The shell is semiglol:)ose. with a flattened base and a rounded 

 periphery, solid, nearly smooth, but under a lens fine growth-lines 

 are seen intersected at right angles b}' fine, close, forwardly de- 

 scending wrinkles. Spire elevated, with convex outlines. Suture 

 simple, well impressed. Whorls 4^, slightly convex, the last 

 rather abruptly descending in front, rounded at the peripher}^ and 

 above, flattened below. Aperture contracted, semicircular, very 

 oblique ; outer lip thickened within, though thin at the edge, du- 

 plicate above the peripher}'. Callus very thick, smooth. Opercu- 

 lum wanting. Maj. diam. 4.8, total length 4.6 mm. 



Kauai : Koloa beach, in a fossil state (Judd). 



Type No. 14,898, Bishop Museum. 



This species is easily recognized by its semiglobose form, 

 flattened base, large size and bv the minute corrugation of its sur- 



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