BRACHIOPODA. 
35 
STROPHOMENA CHJEMEROPS 
Plate 3, fig-. 8. 
S. transversa, (angulis rotundatis) concavo-convexa, rectistriata ; 
striis aspcris. Valva dorsalis ad natem depressiuscula; altera nate 
elevato angusto convexo, dein per discum plana, ad marginem concava 
Costula) rectae, in utraque valva inaequales, majores 12-20, striis 
rigidis nec lineis tenuibus alternate ; omnes lineis concentricis minutis, 
vix sub lente visis, insect*. 
An inch and a quarter wide, and tliree-quarters long : one 
valve convex, the other (ventral) concave; valves finely radiated. 
Shell considerably wider than long, the hinge line rather 
short; the sides arched, and the front somewhat straight. 
Dorsal valve regularly convex, with a very slight depression 
at the beak. Ventral valve concave towards the front, flat 
upon the disk, and with a strong narrow convexity at the 
beak. Striae numerous, thread-like alternating, some twelve 
or thirteen stronger than the rest, (in some specimens the in¬ 
termediate ones are strong also, so that twenty or twenty-five 
are prominent ridges,) and interlined by smaller thread-like 
coarse striae. Lines of growth inconspicuous, but under a 
lens, minute close concentric striae are very evident. There 
are no concentric rugae. 
A fine shell, very common in arenaceous strata. 
Locality. —Damchen. Chorhoti Pass ; Gunesgunga. (Nos. 
1678, 1720, 1737.) 
STROPHOMENA UMBRELLA. 
Plate 3, fig. 9. 
S. uncialis et ultra, tenuis, semicircularis, auriculi3 acutis pro- 
ductis, valvis involutis, valde (ut in Leptama) curvis ; ventrali convexa, 
altera valde concava. Nates minim*. Valva minor (dorsalis) in 
medio depressa ut plicata, altera convexa illic elevata. Margo cardi- 
nalis corrugata, plicis minutis; superficies costis remotis filiformibus 
circiter 20, striisque transvcrsis crebris. 
An inch wide and seven lines long, thin, semicircular, with 
somewhat acute ears. One valve (ventral) convex, and enve- 
