46 AMASTRA. 



with Newcomb's measurements. But neither do his measure- 

 ments agree with the figure in P. Z. S., since that figure has 

 about the same ratio of breadth to length as these shells, 

 whereas Newcomb's measurements represent it as a decidedly 

 narrower shell. This is not to be taken too seriously, how- 

 ever, as there are various ways of measuring the diameter 

 of a shell of this shape, and moreover his measurements were 

 probably read off of a flat scale, giving room for mistakes. 



A. FARCIMEN (Pfeiffer). PL 1, fig. 9. 



Vol. XXI, p. 291. Mr. E. A. Smith had our figure of the 

 type-specimen made. This looks like a sinistral specimen of 

 the pupoidea form of Amastra affinis, such as that figured in 

 Vol. XXI, pi. 44, figs. 10, 11. The position of farcimen de- 

 pends, however, upon the apical sculpture, which is not known 

 to us. It does not look like a Heteramastra. 



A. MASTERSI (Newc.). Vol. XXI, p. 296. 4th line from 

 bottom in place of northeastern read western. 



Section HETERAMASTRA Pilsbry. 

 A. SOROR (Newc.). 



Vol. XXI, p. 285. Part of the specimens taken by Mr. 

 Thaanum in Olowalu gulch, West Maui, have markings recall- 

 ing A. affinis Nc. 



A. PILSBRYI Cooke. PL 4, figs. 6, 7, 8. 



Shell imperforate, sinistral, elliptical with conic spire which 

 is somewhat contracted near the summit. One cotype is of 

 an old gold color, streaked with chestnut behind the outer lip, 

 and with the spire brownish; the other (dead) cotype is wax 

 yellow in front of the aperture, elswhere with a yellow gleam 

 under a pale tawny cuticle, the last third of the last whorl 

 chestnut. Surface of the last whorl semi-matt, the spire 

 more shining ; smooth to the eye, but under the lens unequal 

 growth-wrinkles are seen. Embryonic whorls carinate, the 

 keel visible above the suture ; first half whorl nearly smooth, 

 the next two whorls sculptured with regular, slightly arcuate 



