LAMINELLA, MOLOKAI. 347 



Mr. Thaanum, showing decadence of color-pattern on the 

 last whorl, such as occurs in other Molokaian Laminellas. 

 Fig. 10 is an unusual color-form from the Cooke collection, 

 in which the lines remain for the greater part single and 

 separate. 



Inconspicuous pits on the early whorls of most specimens 

 show a relationship to L. venusta, in which the whorls, es- 

 pecially the last, are more convex than depicta; moreover. 

 venusta is much less glossy. 



Mr. Sykes notes that the fine series collected by Mr. Per- 

 kins above Pelekunu ranges "from pale-yellow to rich orange 

 tinged with crimson. It is sometimes dextral, but sinistral 

 forms predominate. ' ' 



13. L. VENUSTA (Mighels). PL 51, figs. 1-10, 12. 



' ' Shell sinistral, conical, body- whorl large and tumid ; red- 

 dish yellow, beautifully ornamented with black zigzag lines, 

 more or less numerous and regular ; perforate ; whorls 6 ; con- 

 vex ; aperture subovate, lip simple, acute. Length three-fifths, 

 diam. four-fifteenths inch [15x6.3 mm.] . Hab. Oahu ' 

 (Mighels). 



Molokai: Mapulehu (Baldwin). 



Ackatinella venusta MIGHELS, Proc. Boston Soc. N. H., ii, 

 1845, p. 21. PPR., Monogr., ii, 234; in, 466; vi, 179.- 

 KEEVE, Conch. Icon., vi, pi. 5, f. 32 (1850). NEWCOMB, Ann. 

 Lye. N. Y., vi, p. 311, living animal. THWING, Occas. Pap. 

 B. P. B. Mus., Hi, p. 128, pi. 2, f. 25. BALDWIN, Catalogue, 

 p. 8 (Mapulehu). 1 Laminella depicta, eine schlankere 

 Forma von Haupu BORCHERDING, Zoologica, p. 90, pi. 8, f. 20, 

 on the same page called L. remyi. Newcombia venusta 

 Mighels, W. G. BINNEY Ann. N. Y. Acad. Sci., iii, 1884, p. 

 98, pi. 6, f. A (teeth). ( ^Laminella venusta Migh., GULICK, 

 Evolution, Racial and Habitudinal, 1905, p. 38, pi. 1, f. 9 

 (Lahaina) . 



Mighels 's description of venusta is inconclusive. The Port- 

 land Society of Natural History possesses three specimens 

 which had been given by Mighels to J. H. Thomson, and by 

 him turned over to the Society. Since the original type has 



