STERKIA. 51 



d 1 . Diameter decidedly more than half the 

 length. Guyana to Guatemala. 



8. eyriesi, no. 4. 



d 2 . Diam. about half the length. Southern 



Florida. 8. rhoadsi, no. 5. 



c 2 . Palatal folds well developed, the lower one 



rather long. West Indies. 8. antittens-is, no. 6. 



1. STERKIA EYRiEsn (Drouet). PL 6, figs. 1, 2, 4, 5. 



Shell very minute, perforate, cylindric-obtuse, short, 

 smooth, glossy, thin, translucent, pale corneous. Whorls 5, 

 convex, the suture deep, last whorl grooved. Apex very ob- 

 tuse, rather depressed. Aperture somewhat triangular, 5- 

 toothed ; peristome subcontinuous, spreading, reflected. Length 

 iy 2 , diam. 1 mm. (Drouet). 



French Guyana: Ilet-la-Mere, on the trunk of Spondias 

 moubin, quite abundant (Lieut. Charles Eyries). Cayenne 

 (A. N. S. P.). Nickerie, Surinam (Voltz). San Fernando, 

 Trinidad, on ferns (Guppy). Chama, Guatemala (A. A. 

 Hinkley). 



Pupa eyriesii DRONET, Essai sur les Moll. terr. et fluviatiles 

 de la Guyane Frangaise, 1859, p. 71, pi. 2, f. 160, 17. 

 BLAND, Amer. Journ. of Conch., iv, p. 186. VERNHOUT, The 

 Non-Marine Mollusks of Surinam, p. 20, in Notes Leyden 

 Mus., vol. 36. GUPPY, Journ. of Conch., vii, 1893, p. 220. 



Drouet adds that the whorls are very convex, separated by 

 a deep suture, the summit very obtuse, as though depressed, 

 generally worn and grayish. Of the five teeth two are supe- 

 rior, one on the columella, one inferior and one on the right 

 margin, which is sinuous. 



Drouet 's figures are copied, figs. 4, 5. The specimens from 

 Cayenne (figs. 1, 2) are stouter with larger aperture than the 

 original figures, but a certain latitude must be allowed in 

 old figures of such minute shells; strict accuracy was rarely 

 realized, and cannot be expected. Moreover, Drouet 's meas- 

 urements indicate a shell practically of the size of that drawn 

 in our fig. 1. The color is between cinnamon and cinnamon- 

 buff, the surface somewhat glossy, and distinctly though 



