New Brachiopoda.— Winchell and Schuchert. 28d 
numerous finer ones. Ina profile view the line of conjunction of 
the valves is more or less convex dorsally. Pedicle (ventral) 
valve flat or slightly concave along the center lengthwise, and 
strongly convex transversely. 
Brachial (dorsal) valve strongly convex, both transversely and 
longitudinally. In the interior of this valve the cardinal margin 
is broadly flattened, striated, divided centrally by a well defined 
narrow depression which terminates at a point one-fourth the 
length of the shell from the posterior edge. Near the posterior 
end of the depression are faint traces of the umbonal scar. The 
vascular trunks are discernible on each side and anterior to the 
rostral depression; thence having the same curve as the outer mar- 
gin of the valve, proceed to a point somewhat beyond the poster- 
ior half of the shell, where they gradually converge and meet near 
the anterior margin. Vascular branches originate only from the 
outer side of the vascular trunks. There is no other species of 
Lingula from the Lower Silurian, with the peculiar detlected anter- 
ior portion of the shell so characteristic of this species. 
Plate xxIx, figs, 15-18. 
Formation and locality. Near the base of the Galena, near Fountain, 
and in the Hudson River, near Spring Valley, Minn. 
Lingulasma galenensis. 
Shell large, oblong; subpentagonal. Anterior margin slightly 
convex, somewhat produced in the center. This species differs 
from L. schucherti Ulrich, in that the brachial (dorsal) valve is 
deeper; platfornt and median septum shorter, and the crescent 
smaller. In the pedicle (ventral) valve the platform is also shorter 
and is of an entirely different shape. The muscular scars of this 
species are also more distinct, while the interior pedicle area is 
absent. 
Plate xxx, figs. 1-4. 
Formation and locality. Near the top of the Galena limestone, Bear 
creek, south from Hamilton, Minn. Also in the Galena limestone at 
Decorah, Iowa. 
Strophomena septata. 
This species seems to be a local development of SN. frentonens/s 
and so far as external characters are concerned no distinguishing 
features can be pointed out Compared with S. rugosa we find a 
still closer general resemblance, both externally and internally. 
