366 HAMINEA. 



H. oralis PsE., Amer. Jourii. Conch, iv, p. 71, pi. 7, f. 2 (animal), 

 pi. 12, f. 20 (shell). 



H. APERTA Pease. PI. 43 fig. 17. 



Shell thin, pellucid, smooth, ovate, imperforate, white, very finely 

 and irregularly striate longitudinally ; outer lip slightly expanded 

 above ; aperture narrow posteriorly, anteriorly dilated ; columella 

 deeply arched below, and strongly callus; callosity somewhat 

 reflexed, rather broad. Alt. 15, diam. 9 mill. 



Tahiti. 



H. aperta Pse., Am. Journ. Conch, iv, p. 72, pi. 12, f. 22. 



Approaches H. crjmhalum Quoy, but more ovate, outer lip not 

 being so much expanded. 



H. siMiLLiMA Pease. PI. 40, fig. 95 ; pi. 43, figs. 11, 12. 



Shell thin, fragile, pellucid, white, abbreviately oval, imperfor- 

 ate ; aperture narrow above, dilated below, columella arched ante- 

 riorly and callous ; lip slightly involute. Alt. 8, diam. 6 mill. 



Animal pale green, the portion seen through the shell darker, 

 everywhere conspicuously dotted with rich orange, with a few spots 

 of purplish interspersed. Foot cream color, with close orange dots. 

 Posterior portion of the foot narrow, extending some distance beyond 

 the shell, and terminating in a sharp point. (Pse.). 



Tahiti. 



H. simillima Pse., Am. Journ. Conch, iv, p. 72, pi. 7, fig. 3 

 (animal), pi. 12, f. 21 (shell). — Martens, Donum Bism., p. 52. 



H. nujropunctata and H. simillima resemble each other closely in 

 both animal and shell. Thelatter species is much smaller and difl^ers 

 somewhat in color, and especially in the shape of its foot, which is 

 constant. 



H. ovoiDEA Quoy & Gaimard. PI. 28, figs. 31, 32. 



Shell ovate, fragile, white, slightly umbilicate, transversely stri- 

 ated in front, and with delicate longitudinal stripe. 

 Alt. 6, diam. 4 lines. {Q. & G.). 



Humnta, Island of Guam. 



Bulla ovoidea Q. & G., Zool. de I'Astrol. ii, p. 348, pi. 26, f. 17-19^ 

 (not of A. Ad. nor Sowb.). 



