346 LAMINELLA, MOLOKAI. 



anastomose more or less freely, and very frequently converge 

 downwards forming wedge-shaped figures at the periphery of 

 the last whorl (or rarely, dark markings are absent). The 

 aperture is white within, the basal lip and columella white in 

 yellow shells, reddish in the orange form. Columellar fold 

 moderate. There is almost always a low callous fold above it 

 on the columella. 



Length 17, diam. 7.2, aperture 6.2 mm.; 7 whorls. 



Length 15, diam. 7, aperture 6 mm.; 6% whorls. 



Length 15, diam. 6.5, aperture 5.8 mm. 



Molokai : Kamalo (Baldwin) ; Pelekunu valley and Haupu 

 (Borcherding). 



Laminella depicta BALDWIN, Proc. A. N. S., Phila., 1895, p. 

 228, pi. 11, figs. 33, 34, 35. BORCHERDING, Zoologica, p. 89, 

 f. 21. L. venusta Mighels, BORCHERDING, t. c., p. 87, pi. 8, 

 f. 22 (Haupu). L. alexandri Newc., BORCHERDING, p. 88, pi. 

 8, f. 22. 



Typical forms of L. depicta are more slender than L. alex- 

 andri, the spire being longer; yet this does not hold with all 

 the Molokaian shells, some lots (pi. 52, figs. 6-8) being as wide 

 as alexandri. The chief difference between the shells of L. 

 depicta and alexandri is in the locality. Nobody could separ- 

 ate a mixed lot. While locality is a character to be given du-' 

 weight, yet I am inclined to believe that this is a case of two 

 now isolated colonies of an old species, which have not di- 

 verged enough to call for specific separation. Yet it may be 

 that a thorough examination of the soft anatomy would show 

 changes not recorded in the shell. Baldwin writes, " Animal 

 extended in motion shorter than the shell. Mantle very light 

 brown. Foot above and below almost white. Tentacles short, 

 light brown. This species is allied to A. alexandri Newc., 

 from the island of Maui, and to A. remyi Newc., from the 

 island of Lanai, but differs from both in the color and habits 

 of the animal." 



Figures 13, 14, 15 are from shells of the type lot, no. 65711, 

 A. N. S. P. In one of them there are no dark lines or mark- 

 ings of any sort. Figs. 14, 15 are from the types of Baldwin's 

 figs. 34, 35. Figs. 6. 7, 8 are Kamalo shells received from 



