DEVONIAN FAUNAS. ara 
Remarks.—Conrad’s original description of Leptena indenta was 
very meagre, and Hall included the species in Stropheodonta vari- 
striata. In his bibliographic list, however, Schuchert has recognized it 
as a distinct species, and doubtless he is correct in so doing. None of 
the New Jersey specimens identified with this species are as large as 
the one described by Conrad, which is said to be three-fourths of an 
inch in length, but they are all very characteristically marked by the 
strong, transverse indentations in the radiating furrows, and may al- 
ways be recognized by this character. 
STROPHONELLA PUNCTULIFERA (Con.). 
Plate XXVII., Figs. 6-8. 
1859. Strophodonta punctulifera Hall, Pal. N. Y., vol. III., p. 188, 
pl. 21, figs. 4 a—b, pl. 23, figs. 4a-c, 5c, Ve. 
Description.—Shell subsemi-circular in outline, strongly concavo- 
convex, the hinge-line about equaling the greatest width. Pedicle 
valve slightly convex on the umbo, then becoming strongly concave to 
the lateral and front margins; the cardinal area narrow; the beak 
inconspicuous, scarcely projecting beyond the hinge-line. Brachial 
valve slightly concave on the umbo, then becoming strongly convex 
or geniculate towards the lateral and front margins, following some- 
what closely the curvature of the opposite valve. Surface of both 
valves marked by strong, angular, raised, radiating striz, which in- 
crease by bifurcation and implantation; becoming finer toward the 
margins. On well-preserved specimens these strive are seen to be 
punctate. The interior surface of the valves is pustulose, giving to 
the surface of internal casts a pitted appearance. 
The dimensions of an average-sized individual are: length, 33 mm.; 
width, 50 mm. 
Remarks.—This shell is always poorly preserved, the best speeimens 
observed being but fragmentary. It can be easily recognized, how- 
ever, In most cases, by its strong, angular, radiating markings and by 
the strongly-pitted surface of internal casts. 
