lOO (hi^/iial Dcsoiptions of .\chati)icUa . 



DWIGHTII GROUP. 

 156. Achatinella dwightii Newcomb. 



.i. d.cightii Newc. Ann. I,vc. New York, vi. 1S55, p. 145. 



Shell oblong-conical, sinistral, solid ; surface covered with ob- 

 liciue longitudinal striae, cut across by very numerous fine, slightly 

 undulating, cross striae ; whorls 6, flatly convex, crenulated at the 

 sutures ; suture simple, well marked ; aperture ovate ; columella 

 broad, short, and slightly twisted; outer lip expanded, sub- 

 refle(5led below; sub-umbilicated. Color a greyish white, with 

 numerous blotches, and zigzag markings of brown, more obscure 

 on the last whorl ; aperture and lip of a dingy white. Long. 19/20, 

 lat. 9 1/2/20 poll. 



Remarks. This is also a rare species, offering but few varie- 

 ties, the only variation from the type being the one figured, in 

 which the suture, instead of being simple, is, in the last whorl, 

 strongly corded. — Newc. 



Hab. Kamalo.^Bald. 



A series of over one hundred examples is in the author's col- 

 le(5lion, showing type forms and also darker brown varieties w^ith 

 a white band on the last whorl. This with the following two shells 

 may be grouped together. 



157. Achatinella compta Pease. 



Paituliiia Kouf'la Pse. J. Conchyl. x\ii, 1S69, p. i7,s. 



T. sinistrorsa, aiitfustc jierforata, solidiuscula, oblongo-conica, spira oljso- 

 lete transversiiii tt-nuitt-r rugoso-striata (ad anfractum iilliniuin rugis cvaii- 

 tscentibus) et longitudiiialittr striis teiiuibus, irrcgiilaribus impressa; spira 

 tiirrita aut oblongo-conica ; sutura iniprtssa; tiiifr. 6, con\-fxi, intfrdum 

 supra subangulali, ultiinus 1-2 longitudinis lestte aquaiis; apertura vcrti- 

 calis, ovata ; ])lica colunif llaris supcra, valida, alba ; labro vix expanse, intus 

 calloso ; jiluniljuo-grisLa, lincis vtl fasciis ruftsceiiti-fuscis ciiigulata ; aiifr. 

 ullimus ad basin fascia alba ornatns. Long. 25, diani. 13 mill. 



Shell sinistral, narrowly perforate, somewhat solid, oblong- 

 conic, with the spire obsoletely, transversely, thinly wrinkled to 

 striate (the wrinkles disappearing on the last whorl) and longi- 

 tudinally marked with thin, irregular striae; spire twisted or 

 oblong-conic ; suture impressed ; whorls 6, convex, sometimes 

 times sub-angulate above, the last equal to half the length of the 

 shell ; aperture vertical, ovate ; columellar fold high, strong, white; 

 lip hardly expanded, thickened within ; lead colored, encircled by 

 reddish brown lines or bands, the last whorl with a white band 

 on the base. 



