LEPTO'J'HYRA. 257 



I.. RUBRiciNCTA Migliels, 1845. PI. 39a, fig. 32. 



Shell minute, depressed-globose, perforate ; spire short, apex ob- 

 tuse ; Avhorls 4, convex, encircled by coarse white spiral ribs, the in- 

 terstices deep red ; base smooth, with concentric red stripes ; aper- 

 ture large, rounded, oblique ; umbilicus narrow. 



Alt. Il', diam. If mill. Hawaiian Is. 



The synonyms are Turbo inHltllineata Garrett, Collonia rubrilin- 

 eata and C. miiltistriata (Pse.) Sowerby, and Leptothyra ruhrilineata 

 (Garrett) v. Martens. 



Some specimens are beaded below the sutures, and there is some 

 variation in the width of the umbilical perforation. The revolving 

 ribs are sometimes obsolete ; but so far as I know the red spiral 

 stripes are constant ; of these there are usually eight to double that 

 number on the body-whorl. 



Mr. Pease distributed this species under the name of "ruhrilineata 

 Garrett." This fact probably accounts for the names quoted by 

 Sowerby. 



L. EXiLis Philippi, (1849?) PL 62, figs. 3-5. 



"Intermediate between T. sanguineus and T. ruhricindus, and 

 separated from both by its rather wide umbilicus ; there are 4 whorls, 

 which are rapidly increasing and well rounded ; the spiral ridges are 

 about 12 on the body-whorl, but vary in number ; they are subgran- 

 ulose, and at the suture distinctly tuberculose. The border of the 

 umbilicus is crenated ; aperture circular ; color bright carmine, some- 

 what lighter in the furrows ; umbilical tract pure white ; aperture 

 inside pale red." Alt. 3i mill. 



Habitat unknown. 



This species is unknown to me. Tlie above paragraph contains 

 all the information given by Philippi. 



L. VERRUCA Gould, 1845. PL 39a, figs. 30, 31. 



Shell small, short ovate-conic, solid, imperforate or narrowly um- 

 bilicate, white with numerous revolving series of red or broAvn tessel- 

 lations ; whorls 5, spirally lirate, the lira largest at middle of whorl, 

 and sometimes causing a slight carina there ; last whorl slightly but 

 abruptly deflected anteriorly; aperture circular, white, columella 

 arcuate, wide, white, not dentate below ; base with a minute inter- 

 nal denticle. Alt. 5, diam. 5 mill. 



Sandwich Is. 

 17 



