1862.] MR. W. H. PEASE ON TWO NEW HEUCTERES. 7 



subtiliter transversim striata, striis subflexuosis, interruptis, 

 juxta suturas conspicuis ; anfractibus sex, convexis, superne 

 marginatis, ultimo plano-convexo, oblique producto ; apertura 

 obliqua, oblongo-ovata, plica columellari valida : colore cas- 

 taneo, albido et fusco irregulariter strigato, columella et aper- 

 turce margine intus purpureo-rubentibus. 



Shell sinistral, imperforate, oblongo-ovate, ventricose, rather solid, 

 finely striated transversely ; striae somewhat flexuous, granulose, and 

 interrupted, more regular and conspicuous beneath the sutures. 

 Whorls six, convex, marginated, the last being somewhat produced 

 obliquely and flattened on the middle, so as to give in some specimens 

 a subangulated appearance at the base. Aperture somewhat oblique, 

 of an oblong-ovate form ; columellar fold strong. Colour chestnut- 

 brown, striped and mottled irregularly with darker brown and white ; 

 columella and inner edge of aperture purplish red. 



Hab. Island of Molokai. 



The above species from the island of Molokai appears to represent 

 the H. marmoratus and its varieties of the island of Maui. It is, how- 

 ever, larger and heavier ; the last whorl has also a peculiar shape, in 

 common with that of several of the larger species found on Molokai. 

 All the specimens I have seen are sinistral, and the columella and 

 edge of the aperture of a deep red. 



Helicter hutchinsonii. 



H. testa acuminato-turrita, sinistrorsa, imperforata ; anfracti- 

 bus septem, plano-convexis, longitudinaliter rugosis et irregu- 

 lariter striatis, non marginatis ; sutura bene impressa, subrudi; 

 apertura ovata ; columella subplicata tortuosa ; epidermide 

 fietili-brunnea induta, apice fusco ; apertura et columella per- 

 albidis. 

 Hab. Maui, Sandwich Islands. 



Shell acuminately turreted, sinistral, imperforate. Whorls seven, 

 flatly convex, coarsely and irregularly striated longitudinally, not 

 marginated ; sutures somewhat rude, well impressed. Aperture 

 ovate, about two-fifths the length of the shell ; columellar fold slight, 

 oblique, and tortuous. Shell covered with an earthy-brown epi- 

 dermis ; apex of a darker colour ; aperture and columella white, 

 shining. 



This shell appears to be the analogue of H. obscurus (Newc.) from 

 the island of Lanai. The latter differs in many respects, more par- 

 ticularly in the colour of its aperture, which is of a purplish red, and 

 also in the shape of its columella, which has a character in common 

 vdth other species found on Lanai. The above species is sinistral ; 

 H. obscurus is dextral. We have attached to this species the name 

 of the Honourable F. W. Hutchinson, Judge of the Circuit Court, 

 to whom we are indebted for several rare shells. 



