364 SYSTEMATIC PALEONTOLOGY 



Description. Valves about 4 mm. in length, and not quite 3 mm. long, 

 with the straight or dorsal margin a trifle more than three-fifths of the 

 entire length. Valves convex, and wider at the posterior end; cardinal 

 angles distinct. Anterior and posterior ends with flattened margin, 

 narrowing along the basal border and disappearing along the mid-ventral 

 edge. Surface covered with moderately large, depressed pits, most of 

 which have an elevated granule in the center. A nearly circular, smooth 

 spot, and above it a rapidly widening area also without pits, extending to 

 the dorsal border, replaces the usual sulcus or tubercles of the surface 

 of such ostracoda. 



The surface punctae and the smooth spot in the anterodorsal part of 

 the valve easily distinguish this species. The types were found in the 

 Beekmantown limestone at Shoreham, Vermont. 



Occurrence. BEEKMANTOWN LIMESTONE (Turritoma zone). Huyett, 

 Maryland. 



Collections. Maryland Geological Survey, U. S. National Museum. 



Genus LEPERDITIA Rouault 



LEPERDITIA FABULITES (Conrad) 



Plate XXXIX, Fig. 1C; Plate XLIII, Figs. 1-5 



Cytherina fabulites Conrad, 1843, Proc. Acad. Nat. Sci. Philadelphia, vol. i, 



p. 332. 

 Leperditia fabulites Ulrich, 1891, Jour. Cincinnati Soc. Nat. Hist., vol. xiii, 



p. 173, pi. xi, figs, la-d, 2. 

 Leperditia fabulites Ulrich, 1894, Geol. Minnesota, vol. iii, pt. 2, p. 634, 



pi. xliii, figs. 1-14. 

 Leperditia fabulites Weller, 1903, Geol. Surv. New Jersey, Pal., vol. iii, 



p. 208, pi. xiii, figs. 11, 12. 



Description. " Carapace of medium size, obliquely subovate, compara- 

 tively long, widest posteriorly; ventral curves moderate, strongest just 

 behind the mid-length ; cardinal line straight, comparing with the length 

 of the valve as two is to three, the two extremities almost equally angular ; 

 hight of ends about as three is to four, both obliquely truncate above, the 

 anterior narrowly rounded in the middle; the posterior outline more 



