28 AMASTRA. 



A. TEXTILIS (Fer.). Vol. XXI, p. 164. A. cookei, Vol. 

 XXI, p. 182, is merely a form of textilis. One of Pease's 

 specimens of A. solida (Mus. Comparative Zoology), is a 

 stunted, thickened textilis, but it does not seem to have sup- 

 plied any part of his diagnosis. 



A. SUBROSTRATA (Pfeiffer). PL 7, fig. 4. 



Vol. XXI, p. 174. A translation of the original description 

 has been given in Vol. XXI. A figure of the type-specimen, 

 obtained for us by Mr. E. A. Smith, is now given. This shows 

 that it is identical with part of the shells in the type lot of 

 A. solida Pease, described on p. 178 of Vol. XXI. It will be 

 noted that the descriptions of Pfeiffer and Pease read much 

 the same. 



A. subrostrata is closely related to A. -textilis (Fer.), from 

 which it differs chiefly by the more attenuate spire. The out- 

 line is convex below, a little concave above. The embryonic 

 whorls have the fine and rather faint striation of textilis. 

 The shell is thicker than in textilis. It differs from A. albo- 

 labris by the texture, sculpture, color and shape of the aper- 

 ture. A. (Emulator has very much stronger sculpture on the 

 embryonic whorls, as in A. cornea, and belongs to an appre- 

 ciably different group of species. The deep recess below the 

 columellar lamella and the somewhat straightened basal lip 

 of A. subrostrata can be matched in any good series of 

 A. textilis. 



A. siibrostrata has the appearance of a shell from the east- 

 ern part of the Main Range. 



Two of Pease's specimens of A. solida (pi. 7, figs. 2, 3) are 

 identical with A. subrostrata. One is Prout's brown, the 

 other russet to cinnamon brown, both indistinctly mottled 

 and streaked with whitish on the last half whorl ; embryonic 

 whorls of the same color. In one shell (fig. 3) the lip is 

 subangular outwardly, and has a smooth, rather thick, in- 

 ternal lining. Length 13.5, diam. 7.8 mm., 5% whorls. The 

 other has an amorphous, pimply, yellowish lip, which has 

 been built forward from a smooth one, visible about 3 mm. 

 within (fig. 2). The columellar margin and parietal callus 



