1917.] NATURAL SCIENCES OF PHILADELPHIA. 221 



species in which the outer Hp is far less strongly arched, and the 

 shell more opaque. The row of varices is nearly straight. A 

 topotype, received from Mr. Cuming, is figured for comparison, 

 PI. XIV, figs. 1, la. 



Melanella inflexa (Blainv.) (as Phasianella inflexa, Blainville, 

 Manuel de Malacologie, p. 439, PI. 35, fig. 5), from Isle of France, 

 is a smaller, much more broadly conic species, according to the 

 figures. It is certainly not identical with M. major, as surmised by 

 Tryon. 



Melanella cumingi medipacifica n. subsp. PI. XIV, figs. 4, 4a. 



This form is less robust than M. cumingi A. Ad.,^ with a narrower 

 aperture. It is very slightly bent, almost straight. The varices 

 are at irregular intervals of from a half to about three-fourths of a 

 whorl, the last whorl with none. They appear on the last 10 whorls 

 at least. The shell is white throughout. 



Length 24, diam. 7.5 mm.; 12 whorls, several at the apex lost. 



Hilo, Hawaii, D. Thaanum. Type and paratype No. 108473 

 A. N. S. P. 



This may be the adult form of Eulima conoidalis Sowerby, Conch. 

 Icon. XV, 1866, PI. 3, fig. 22, described from the Sandwich Islands, 

 Mus. Cuming. It is a point to be settled by further investigation, 

 and the comparison of half grown examples of medipacifica with 

 conoidalis. 



Melanella labiosa (Sowerby). PI. XIV, figs. 3, 3a. 



1834. Eulima labiosa Sowb., P. Z. S. p. 7 (Island of Annaa, Pacific Ocean); 



Conchol. Illustr. fig. 2. 

 1855? Eulima labiosa Sowb. A. Adams, Thes. Conch. II, PL 169, fig. 31. 

 1886. E. labiosa Sowb. (as svnonym of E. brevis Sowb.), Tryon, Man. 



Conch. VIII, p. 267, PI. 68,^fig. 2. 



The shell is white, rather solid, somewhat curved, conic, the whorls 

 noticeably convex. Varices in a single lateral series on the right 

 side, which recedes to a dorsal position on the early whorls. The 

 aperture is rather broadly ovate; outer lip prominent above the 

 middle, strongly receding from there to the suture. 



Length 19, diam. 7.6, length of aperture 6 mm.; 11^ whorls, the 

 tip wanting. 



Hilo, Hawaii, D. Thaanum. Figured specimen is No. 117067 

 A. N. S. P., from No. 3807 Thaanum collection. 



While related to M. thaanumi, this is easily distinguished by its 



^ Eulima cumingi A. Adams, Proc. Zool. Soc. 1851, p. 277; Sowerby's Thesaurus 

 Conchyhorum II, PI. 169, fig. 26. Lord Hoods Island, South Seas, on Avicula 

 margaritifera. 



