BULIMULUS-BOSTRYX-PERON^EUS. 153 



Aperture ore/- one-third the altitude of shell, long-oval, white 

 within ; peristome not expanded, slightly thickened within, the col- 

 umellar margin dilated above. 



Alt. 12-6, diarn. 5'2 mill. ; alt. of aperture 4'8 mill. 



Alt. 12-2, diam. 5 mill. ; alt. of aperture 4'6 mill. 



Frierina, near HH<I*CO, Chili (Bridges), under low cacti. 



Bulimu* i'hodacme PFR., P. Z. S., 1842, p. 187 ; Symbols, ii, p. 

 50; Monogr., ii, p. 211 ; Conchyl. Cab., p. 230, pi. 62, f. 25-27. 

 HUPE in Gay, Hist. Chile, p. 113. REEVE, Conch. Icon., pi. ]4, f. 



77. 



The rose color is variable in amount, and nearly absent on some 

 specimens. The sculpture is quite characteristic, although also 

 variable in degree of development. 



B. PUSTULOSUS Broderip. PL 46, fig. 58. 



Shell umbilicate-rimate, oblong-conical, rather solid, calcareous. 

 White or pale brownish, often with some scattered corneous-brown 

 dots, the earlier two whorls corneous. Surface lusterless, rudely 

 closely and irregularly plicate-striate, u'ith Wronger folds at rather wide 

 but unequal intervals ; the longitudinal folds and strice cut into rather 

 coarse granules by incised spiral*, unequally developed ; the sculpt- 

 ure weaker above, absent on the smooth apical whorls. Spire 

 conic ; whorls 6-6 , convex, the last with an ample umbilical excava- 

 tion, but only a minute perforation. 



Aperture subovate, contained 2i to 2 times in altitude of shell, 

 whitish or brown inside ; peristome slightly thickened within, the 

 outer lip regularly arcuate, not expanded, columellar lip dilated 

 above, ends of the lip approaching. 



Alt. 14, diam. 7? mill. 



Alt. 13-2, diam. 6'8 mill. 



Huasco, Chili (Cuming, Paz and Martinez), under stones in 

 sandy situations. 



Bulinus piistulosus BROD., P. Z. S., 1832, p. 105. SOWB., Conch. 

 Illustr., f. 23 (not good). Bulimu* pustulosus DH. in An. s. Vert., 

 viii, p. 273. PFR., Monogr., ii, p. 217 ; vi, 140 ; Conchyl. Cab., p. 

 227, pi. 62, f. 13-15. REEVE, Conch. Icon., pi. 20, f. 127. HUPE 

 in Gay, Hist. Chile, viii, p. 112, pi. 2, f. 4. HIDALGO, Mol. Viaje 

 al Pacif., p. 90 ; Journ. de Conch., 1870, p. 53. 



Very much stouter than B. rhodacme, and more irregularly and 

 roughly sculptured, but evidently allied. There is a wide range of 



