AMASTRA, MAUI. 297 



The series examined from this place is in the C. M. Cooke 

 collection. 



Series of A. assimilis. 



Small or moderate sized shells, generally with mottled or 

 zigzag-striped outer layer of dark cuticle. Embryonic whorls 

 typically costate and carinate. Common to East and West 

 Maui and Molokai. 



Perhaps an additional Series should be erected for A. john- 

 soni (no. 100). A. erecta (no. 101) and A. subpulla (no. 

 96d), which have plain or banded coloration, and so far as 

 known have plain, not figured cuticle. 



96. A. AFFINIS (Newcomb). PL 44, figs. 1-4, 6. 



" Shell acutely conical; whorls 6, rounded, not margined; 

 suture well impressed; aperture ovate; lip thin; columella 

 with a white lamellar twisted tooth; color white, roseate or 

 salmon, with traces of a dark-brown epidermis; last whorl 

 lighter-colored than the upper ones. Length 12, diam. 5% 

 twentieths of an inch " (=15x7.2 mm.) (Newc.). 



East Maui: Kula (Newcomb). 



Achatinella affinis NEWC., P. Z. S., 1853, p. 142, pi. 23, fig. 

 35 (1854). PFR., Monogr., vi, p. 180. Achatinella gonios- 

 toma PFR., P. Z. S., 1855, p. 103 ; Monographia, iv, p. 550. 

 Amastra rustica GULICK, in Gulick and Smith, P. Z. S., 1873, 

 p. 84, pi. 10, f. 17. 



A. affinis t rustica and pupoidea, together with the forms 

 bigener, Cinderella and subpulla, distinguished by Hyatt, 

 make up a group of very closely-related forms, which seem 

 to me inextricably connected ; yet as my knowledge of them is 

 limited to a couple of hundred museum specimens, without 

 field notes, my course should not unduly prejudice a natura- 

 list who may study the group at Kula, its headquarters. As 

 a, whole, the species differs from A. assimilis by its generally 

 smaller size. 



Newcomb 's type figure of affinis is copied, pi. 44, fig. 4. 

 Figs. 1 to 3 represent typical specimens enlarged to show the 

 sculpture. The embryonic whorls are brown or whitish, flat- 

 tened, strongly costate, and carinate above the suture, the 





