18 Descriptions of New Sjiecies of Achalinella. 



Remarks. — In form, this species approaches Helix cinctella 

 Drap. from Europe, and H. Raivsonis Pfr. from Mauritius, but 

 its other characteristics refer it to the lamellated group of which 

 H. pila Ad. is a representative, and which Beck in 1837 

 proposed to elevate to a subgenus under the name of Sagda. 



V. — Descriptions of New Species of ACHATINELLA from Sandwich 



Islands. 



By Dr. W. Netvcomb, of Honolulu, Corresponding Member. 

 .Read February 12, 1853. 



l. Achatinclla violacea. 



Testa dextrorsa, ovato-oblonga, solida, longitudinaliter valde striata, 

 violacea, striis pallidis varia ; anfractibus septem, convexis ; sutur& sim- 

 plici et valde impressa ; apertura ovata ; columella brevi, in plicam 

 albam, contortam desinente ; labio siraplici. 



Shell dextral, ovate-oblong, solid; whorls seven, convex, 

 strongly striate longitudinally ; suture plain and deeply im- 

 pressed ; aperture ovate ; columella short, terminating in a 

 twisted plait', lip simple. Color violaceous with light colored 

 stria.-. 



Length 1.1 inch. Breadth 0.55 inch. 



Habitat. — Molokai. 



