52 STERKIA. 



weakly striate, the initial whorl paler, microscopically gran- 

 ular. Whorls convex, especially the penult. The angular 

 lamella curves to join the outer lip weakly. The parietal 

 lamella is long and high. Columellar lamella is situated high 

 on the columella, is short and ascends inward diagonally. 

 The two palatal folds are short and high, the lower more im- 

 mersed than the upper. 



Length 1.7, diam. 1, alt. aperture 0.6 mm.; 4% whorls. 



Length 1.6, diam. 0.95, alt. aperture 0.56 mm. ; 4% whorls. 



Some doubt must be expressed regarding Dr. Vernhout's 

 identification of a specimen from Surinam, collected by Yoltz, 

 for he states that it is 2 mm. long. 



A single example from Chama, Guatemala, has the pari- 

 etal lamella somewhat longer, entering more dimply, but 

 agrees otherwise with those from Cayenne. 



The two species following are closely related to 8. eyriesi. 



2. STERKIA RHOADSI (Pilsbry). PL 6, figs. 3, 6, 7. 



The shell is rimate, very minute, cylindric, blunt at the 

 ends, especially above, glossy, clay color, having weak, widely 

 and unevenly spaced wrinkles. Whorls 4%, the first 1% 

 smooth, the upper ones very convex, the last a little less so, 

 somewhat compressed over the palatal region, and having a 

 slight impression over the upper palatal fold. The aperture 

 is about as wide as long, broadly truncate above. The an- 

 gular lamella is curved, the concavity towards the periphery. 

 It reaches inward hardly to the middle of the parietal lamella, 

 which is longer and higher. The columellar lamella is situated 

 high and ascends obliquely inward. There is a hardly notice- 

 able callus below its inner end. The palatal plicae are small, 

 the lower one longer than the upper and a little more deeply 

 placed. The peristome is brown, expanded and reflected, 

 narrow in the upper curve of the outer lip, the margins re- 

 mote, connected by a thin parietal callus. 



Length 1.85, diam. 0.95, alt. aperture 0.65 mm. ; 4% whorls. 



Southern Florida: Miami (S. N. Rhoads) ; Dismal Key, 

 Lee Co. (C. B. Moore) ; hammock iy 2 miles northeast of Fort 

 Lauderdale (C. T. Simpson in G-. H. Clapp coll.). 



