/ONITKS. % Kif) 



penultimate, not descending Itut subdilatcd in front, periphery 

 obtusely Sllbangulated, base more convex. Pi:im. I I mill. 



Coluinliia (Orb.), Co'/niHtho, Chili (I'M/.). 



II. BMSCKKI, Dunker. PI. 52, fig. 53. 



\:irrowly umbilica ted, smooth, with impressed radiating lines, 

 very shining, corneous yellow ; whorls 5 J, regularly increasing, 

 aperture rather widely, ol)li<piely lunar. Dinin. 7 mill. 



Brazil. 

 II. SmiiNAMKNSis, PfV. PI. 52, figs. 54-50. 



Perforate, depressed, thin, very lightly striulale, nearly smooth, 

 shining, pellucid, greenish hyaline, suture; impressed, very n:ir- 

 rowly thread-margined; whorls 4, regularly men-using, the lust 



a little depressed, periphery rounded. I)i:i.m. (\ mill. 



Parimaribo, Surinam. 

 If. SANTANAENSIS, PIV. PI. 52, fig. 57. 



I'mbilicjited, thin, strinliite, shining, pellucid, yellowish hy:i- 

 line, si>ire, very shortly conoidn,!, suture profound; whorls 5, 

 convex, n.-irrow, the hist scarcely wider, not descending, umbili- 

 cus conic-Mi, about one-third the diameter. Diam. 4-5 mill. 



Santa Ana, N. Granada. 

 II. HONDANA, Pfr. PI. 52, fig. 58. 



Broadly, perspectively umbilicnted, convexly depressed, striu- 

 hite, light corneous yellow; whorls (5, slightly convex, slowly 

 increasing, the last not descending, depressed-rounded, aperture 

 small, oblique, rounded-lunar. Diam. 7*75 mill. 



1/onda, New Granatla. 



II. TKIII:ANTI;I'KCK\SIS, Cross(; and Fischer. PI. 52, figs. 59, 00. 

 Narrowly umbilic:ited, subdepresscd, thin, shining, very lightly 

 striulate, smoothish, light greenish white;, hyaline, suture im- 

 pressed ; whorls 4, the last not descending, subrotund, b;ise 

 planate, aperture almost disigonal. Diam. 3'5 mill. 



Tehuanlepec, M<'.i-i<-<>. 



II. PKRMODKSTA, Strebel. PI. 52, figs. 01, 02. 



Openly moderately umbilicated, somewh.it solid, translucent, 

 shining, light corneous yellow, slightly striulate;; whorls 4 | , 

 moderately increasing. Mirador, M<>,.ri<-<>. 



OIK; of the two specimens had a smnll thickening on the inner 

 side of the lip. 



