348 LAMINELLA, MOLOKAI. 



been destroyed by fire, we propose to regard one of these 

 shells (no. 218 Portland Soc. coll.) as the type. It is very 

 conspicuously marked with scar-like, sunken areas at the 

 stripes, and the summit is purplish. The traditional identifi- 

 cation of venusta, as preserved in old collections such as that 

 of the Academy, of Cuming (figured by Reeve), and of New- 

 cornb, is therefore sustained. Two other shells of the same 

 lot have the last whorl immaculate (pi. 51, fig. 12). 



L. venusta differs from L. alexandri and depicta by the 

 more swollen last whorl and the sunken black markings, 

 which are generally coarser than in depicta, and do not form 

 the characteristic depicta patterns. 



The typical, copiously striped form (pi. 51, figs. 1-4) seems 

 to be what Borcherding has figured as " a more slender form 

 [of depicta] from Haupu," a place on the northern coast. 

 Baldwin, however, gives Mapulehu. one of the southern val- 

 leys, as the locality of venusta. I suspect that Gulick's record 

 of venusta from Lahaina, W. Maui, was based on a small L. 

 picta. 



The dimensions given by Mighels agree with some slender 

 specimens before me. The color, " reddish yellow " appears 

 on the last whorl of some shells, and the phrase " body- whorl 

 large and tumid " is especially characteristic, and could not 

 be applied to A. depicta. The assigned locality, like many 

 in Mighels 's paper, is certainly incorrect, for no such shell 

 occurs on Oahu. 



The shell is always sinistral (so far as we know), perforate 

 or narrowly umbildcate, ground-color light yellow, sometimes 

 orange towards the base. The outlines of the spire are more 

 or less concave, the summit obtuse, reddish, violet or white, 

 Initial half-whorl smooth and convex; following whorl flat- 

 tened, more or less striate and weakly, longitudinally sulcate, 

 the sulci distinct or weak, sometimes beginning on the first, 

 sometimes not before the middle of the second whorl, the first 

 l!/2 whorls then being smooth. Some widely spaced oblique 

 stripes begin on the second whorl, and about the middle of 

 the third they become more or less irregular. Subsequent 

 whorls have many angular or serrate black stripes sunken 



