ACHATINELLA. 117 



Another figure of the type of pexa is given, pi. 50, fig. 18, 

 to show the form of the columella more distinctly than the 

 figure on plate 26. 



The pattern of color is practically the same as in some 

 Waiawa diibia, though developed in delicate tints; and the 

 specimen may have come from that neighborhood; yet it is 

 sinistral with a thin lip, characters more in harmony with the 

 Waianae range form. Gulick did not know the locality. 



Achatinella morbida Pfeiffer. " Shell subperf orate, sinis- 

 tral, ovate-turrite, rather solid, striate and under a lens seen 

 to be decussated with close spiral striae; white, variously 

 streaked and banded with brown; spire long, slender, the 

 apex rather acute, suture simple; whorls 6y 2 , very slightly 

 convex, the last a little shorter than the spire, convex ; colu- 

 mellar fold white, short, oblique; aperture oblique, inverted 

 ear-shaped ; peristome thickened, narrowly expanded, the 

 eolumellar margin much dilated, broadly adnate. Length 19, 

 diam. 9 mm. Sandwich Islands, Dr. Frick in Mus. Cuming. ' 



(P/T.). 



Achatinella morbida PFB., Proc. Zool. So<c. London, 1859, 

 p. 30 ; Monographia, vi, 167. 



This species has not been figured. The description agrees 

 well with sinistral P. dubia, such as are found in the Waianae 

 Mountains; and a figure of the type-specimen which Mr. E. 

 A. Smith kindly had made for me (pi. 41, fig. 4) confirms this 

 determination. A. morbida is merely a somewhat unusual 

 color-pattern of P. dubia. 



Genus ACHATINELLA Swainson. 



Achatinella SWAINS., Quarterly Journal of Science, Liter- 

 ature and Art (2 ser.), iii, June, 1828, p. 83 ; type Monodonta 

 seminigra Lam. Achatinella apexfulva Dixon. GULICK, 

 P. Z. S., 1873, p. 90, classification. Cochlogena, quatrieme 

 groupe, Helicteres, FERUSSAC, Tableau Syst. de la Famille des 

 Limaqons, p. 56, 1821. Helicteres Fer., BECK, Index Mollus- 

 corum, p. 51, 1837. GRAY, P. Z. S., 1847, p. 178, type Helix 

 vulpina. HERRMANNSEN, Indicis Gen. Mai., i, p. 515, type 

 Helix vulpina Fer. Helicter PEASE, P. Z. S., 1862, p. 3. 



