OP CONCHOLOGY. 215 



Long. i§; lat. t,% poll. 



Hahitat. — Ranai. 



Memarl's. — There is a beautiful group of these finely-painted 

 acuminate Achatinellx, commencing with A. venusia, Mighels, 

 and containing the following series : — 



A. venusta, Mighels, 



A. citrina, Mighels, 



A. Remyi, Newcomb, 



A. sanguinea, Newcomb, 



A. tetrao, Newcomb, 



A. picta, Mighels. 



The four central islands of the group are represented by 

 these species, the two first from Molokai, sanguinea from 

 Oahu, 'picta from Maui, the other two from Ranai. 



It may be noted that A. Ferussaci, Pfr., has been omitted 

 from this association, as the typical shell in Mr. Cuming's col- 

 lection is a worn, rather large-sized sanguinea. 



A fine, light-colored variety, with a rosy tip, is occasionally 

 found, but is much less common than those with a dark epi- 

 dermis studded with small, white, triangular markings. 



12. AcHATiisrELLA Remyi, Newcomb. 

 New York Lye, 1855. 



Plate 13, fig. 13. 



Description. — Shell acuminately elongate, striee numerous, 

 well defined, obliquely longitudinal ; whorls 7, rounded, mi- 

 nutely margined above or plain ; suture rather deep ; aperture 

 sub-ovate ; columella slightly callous, with a terminal lamellar 

 plait. Color salmon, painted with numerous zigzag black 

 lines, continuous from the summit to the base of the shell ; lip 

 margined within with reddish-purple. 



Long, y^ ; lat. o\ poll. 



Habitat. — Ranai. 



Remarks. — This species is of great rarity, only a few speci- 

 mens having been collected. It is not so robust a shell as the 

 preeeding, with which it has affinities, as also with sanguinea 

 and incta. The measurements from adult specimens give the 

 following result, viz : — • 



A. incta. A. tetrao. A. sanguinea. A. Remyi. 



19>^8'-2 ]5v9 I6v8 14v'> 



;J|J^30 20^30 :^0^30 3D '^3 



