KO. 2207. TVE.ST AMERICAN MELANELLID MOLLUSKS—BARTSCH. 317 



^'Type. — No. 143, Cal. Acad. Sci., in the bottom of a small canyon 

 about 1} miles due north of Barker's ranch house, Kem County, 

 California. 



" Named in honor of Wilham Gabb." 



MELANELLA (MELANELLA) RETEXTA Carpenter. 



Plate 38, fig. 1. 



Leiostraca retexta Carpenter, Proc. Zool. Soc. London, 1863, p. 356. 



" Leiostraca ? iota, var. retexta Carpenter, Cat. Maz. Shells, 1857, p. 440. Comp. 

 Eulima iota, C. B. Adams, Pan. Shells, No. 290, pp. 198, 317. — Sowerby, 

 Thes. Conch, in loco. — H. and A. Adams, Gen. Rec. Moll., vol. 1, 1854, p. 

 236. 



"Z. ? iota, axi recta. 



"The form above indicated accords somewhat better with the 

 Panama species than with the British, but is entirely without twist. 

 "The British specimens are also sometimes straight. The shells in this 

 genus afford so very few distinctive characters that no species can be 

 certainly established without an accurate knowledge of the animals. 

 The only two specimens found vary in proportion; the smaller, with 

 6 normal turns, measuring long., '06; lat., '028 inches; the larger, 

 long., '087; lat., '033 inches. 



"Habitat. — Mazatlan; extremely rare, off (S^^on^Z^j/Zws; L'poolCol. 



"Tablet 2026 contains the larger specimen." 



I have not seen specimens referable to this subspecies, and quote 

 Doctor Carpenter's description and give an unpubhshed camera lucida 

 drawing made by him of the type. 



MELANELLA (MELANELLA) PUSILLA Sowerby. 



Plate 38, fig. 2. 



Eulima pusilla Sowerby, Proc. Zool. Soc. London, 1834, p. 8. 



Eulima pusilla Sowerby, Thes. Conch., 1854, pp. 794-5, pi. 169, figs. 9, 10, 21. 



"Straight, subulate, thin, white, transparent; whorls slightly con- 

 vex ; aperture elongate-oval, pointed posteriorly. 



" Sancta Elena. (Mus. Cuming.) " 



I have seen no specimens agreeing with this species and have 

 copied Sowerby's description and figure. 



MELANELLA (MELANELLA) HASTATA Sowerby. 



Plate 38, figs. 4, 6. 



Eulima hastata Sowerby, Proc. Zool. Soc. London, 1834, p. 7. 

 Eulima hastata Sowerby, Thes. Conch., 1854, p. 794, pi. 169, figs. 7, 8. 



"Whorls flattened, the first opaque and yellowish, the last white 

 and diaphanous, the last whorl subangular; aperture small, oval, 

 pointed posteriorly. 



" Sancta Elena. (Mus. Cuming.) " 



I have not seen specimens of this sipecies and copy Sowerby's 

 description and figure. 



