ACHATINELLA LOBATA. 279 



p. 202, species no. 2; Monographia iv, 529. Sykes, Fauna 

 Hawaiiensis p. 302. Achatinella ventrosa PFR., P. Z. S. 1855, 

 p. 6, pi. 30, f . 20 ; Monogr. iv, 535. Achatinella nobilis PFR., 

 P. Z. S. 1855, p. 202, species no/1; Monogr. iv, 524. 



Achatinella alba Nuttall in Jay's Catalogue, edit. 3, p. 58, 

 1839 (name only). Achatinella pallida Nuttall, 1. c., and in 

 REEVE, Conch. Icon, vi, pi. 1, f. 2, May, 1850. PFR. Monogr. 

 iv, 532. 



The straightly conic spire, the chalky or porcelain white- 

 ness of the ground, and the tawny and blackish markings make 

 lorata quite easily recognized. Its distinctness is rather a 

 matter of feeling, for the shape and color vary so much that 

 a strictly differential diagnosis could hardly be framed. It 

 has the air of a plebeian in a company of aristocrats. 



The colors are rather crudely laid on, while most other 

 species of "Apex" are clothed in well blended nuances of 

 brown, ashen or slate, or have clearly drawn lines and bands. 



A. lorata is a common shell. In its area one is likely to 

 find it wherever tree-shells occur. The complex of ridges com- 

 posing the mountain walls between Nuuanu and Manoa valleys 

 are the chief habitat of typical A. lorata, though it spreads 

 around the heads of the both valleys, as noted below. 



Ferussac's figures represent several color-forms, all occur- 

 ring in Nuuanu. I take his figs. 10, 11 to be the typical pat- 

 tern. This is represented by pi. 51, figs. 9, 11, from the 

 Nuuanu-Pauoa ridge. His fig. 12 is like the form shown in 

 pi. 51, fig. 14, from the floor of the north side of Nuuanu, the 

 same pattern also extending up the north side. Ferussac's 

 other figures (8, 9), were probably from a dead and decorti- 

 cated specimen of the streaked pattern. The patterns vary 

 from streaked to banded. 



1. Yellow (baryta yellow to yellow Qcher) with olive, tawny, 

 chestnut or black streaks, pi. 52, figs, la., 4, 5. There is often a 

 blackish band or patch at the base. Short compact shells with 

 blackish streaks are Pfeiffer's A. ventrosa. 



2. Same streaked pattern, but cut by spiral white bands, 

 which may be wider than the colored intervals, pi. 52, figs. 1, 

 3&, 6. A. pallida belongs to this group, also A. hanleyana Pfr. 



