Original Descriptions of Achatinella. 53 



conies very near to forms of A. trilineata Gk., found further east. 

 Dr. Cooke considers that the shells from which this species was 

 described were artificially modified from A . trilineata or A . johnsoni. 



63. Achatinella solitaria Newcomb. 



A. solitaria Newc. P. Zool. Soc. London, 1853, p. 150, pi. xxiv, fig. 60. 



Shell ovately conical, dextral : whorls 6, flatly convex ; suture 

 slightly impressed; aperture ovate; lip acute, thickened within; 

 columella white, short, broad and abruptly twisted ; colour light 

 chestnut, with darker longitudinal stripes, green at the base ; 

 a white sutural band for the last two and one-half whorls, 

 and a brown brown band on the suture above. Long. 14/20, 

 lat. 8 1-2/20 poll. 



But a solitary specimen of this species has been obtained. 

 Its characters are, however, sufficiently striking to warrant us in 

 giving it a place as a distinct species. — Newc. 



Hab. Palolo. — Newc. 



I should place this very near to A. producta Reeve. Dr. Cooke 

 found the type specimen was marked similarly to A. dunkeri Pfr., 

 which is a variety of A. producta. 



64. Achatinella venulata Newc 



A. venulata Newc. P. Zool. Soc. London, 1853, p. 146, pi. xxiii, figs. 48, 48(1. 



Shell dextral, elougately conic ; whorls 7, convex, slightly 

 margined above ; suture well impressed ; aperture subovate ; lip 

 simple, thickened within ; columella strongly plicate, twisted, of a 

 pinkish hue ; colour of shell white, or pinkish white, with longi- 

 tudinal veins of green or olive-green epidermal matter. Dong. 

 21/20, lat. 10/20 poll. 



Var. Sinistral, with a deep black sutural band. 



Hab. Koolau. — Newc. 



This shell is in fact only a form of A . producta Rve. It is said 

 to have been a manufactured variety. 



65. Achatinella dunkeri Pfeiffer. 



A. dunkeri (Cuming, MSS.) Pfr. P. Zool. Soc, London, 1855, p. 208. 



A. testa imperforata, oblongo-turrita, solidiuscula, laevigata, pallide car- 

 nea, strigis confertis fusculis ornata, lineis 1 vel 2 nigris saepe cincta ; spira 

 turrita, apice acutiuscula, alba ; sutura leviter marginata, pallida ; anfr. 6 1-2 



