LAMINELLA. 53 



This was mistaken for typical gravida in the former ac- 

 count. Adams' description follows. 



"Achatinella Dimondi. Shell reversed, thick, long ovate- 

 conic ; dingy white or very pale yellowish brown, with a black- 

 ish margin to the aperture when mature ; with a greenish 

 black fugacious epidermis; with the transverse strife rather 

 slight, very unequal and irregular, without spiral strias ; apex 

 subacute ; spire rather long, with the outlines moderately cur- 

 vilinear; whorls nearly seven, quite convex, with the suture 

 well impressed ; last whorl often somewhat flattened on the 

 middle. Aperture subovate, with the columellar fold well de- 

 veloped, with the deposit on the inner side very thin ; labrum 

 sharp, not reflected, well thickened within. Mean divergence 

 45 degrees ; length 1 inch ; breadth 5 inch ; length of aperture 

 .38 inch. 



"Variety (?) lata has a divergence, in a specimen about 

 two-thirds grown, of 55 degrees. 



"Habitat, Sandwich Islands. 



' This fine species is named in honor of Mr. Henry Dimond, 

 of Honolulu, to whom I have been much indebted for the 

 shells of these islands." (C. B. Adams.} 



L. GRAVIDA GRAVIDA (Fer.). PI. 1, figs. 1, 2. 



Probably the form from Pauoa valley and Tantalus is 

 typical. This form agrees well with the original description 

 and figure, and our analysis of Ferussac's Hawaiian shells 

 makes Pauoa the most probable locality for his species from 

 near Honolulu. No doubt the party ascended Mt. Tantalus. 

 This form is figured in Vol. XXI, pi. 55, fig. 3. It is small, 

 with thin cuticle more or less deciduous, but where retained 

 it is profusely speckled with v-shaped and zigzag lines of 

 warm sepia, olive brown or bone brown, more or less dis- 

 posed in streaks, and over a pale ochraceous salmon under- 

 tint. Embryonic whorls usually some shade of brown, some- 

 times olive-buff or a darker shade. Interior flesh color. 

 Some specimens are cream-colored under the cuticle, with 

 the aperture warm. buff. The largest specimen found by the 

 senior author is 21.3 mm. long. 



Oahu: Bowl of Tantalus (pi. 1, figs. 1, 2). 



L. GRAVIDA SUFFUSA (Reeve). Vol. XXI, pi. 55, figs. 7, 8. 

 Cuticle almost entirely wanting, the shell pink or white; 



