Rathbun.] 16 [May 15, 
to science. The faunz of the two series of deposits —the Ereré 
on the one hand, and the Mecurt and Curuad on the other—are 
closely related, but I will leave the discussion of this subject for the 
close of the paper. 
The collections of the Morgan Expeditions referred to in the fol- 
lowing pages are contained in the Museum of Cornell University, Ith- 
aca, New York; those of the Geological Commission of Brazil are at 
present deposited in the National Museum at Rio de Janeiro: Fig- 
ures of many of the new species described in this paper were execut- 
ed at Rio de Janeiro a year ago, and will probably be published in 
some future work of the Geological Commission. 
Lingula spatulata (?) Hall. 
Lingula spatulata Hall and Vanuxem, Geol. Repts., Third and 
Fourth Geol. Dists. N. Y., 1842 and 743; Hall, Paleont. of N. Y., rv, 
13,1867. Lingula spatulata (?) Rathbun, Bull. Buffalo Soc. Nat. Sci., 
I, no. 4, 258, fig. 1, 1874. 
Only a ale specimen of this species has been obtained from the 
Devonian of Brazil. Sandstone, Ereré, Prov. of Parad, Brazil. 
(Morgan Expedition, 1871.) 
Lingula ererensis, sp. nov. 
Shell of medium size, about two-thirds as wide as long, subelliptical 
in outline, and broadest near the middle; lateral margins nearly 
straight along the middle, but curving very slightly; anterior and pos- 
terior margins rounded, the former apparently the broader, and very 
regularly and strongly curved. Valves moderately convex, with a 
tendency to form a more or less defined median ridge near the beak. 
Surface marked with very fine, regular, closely-set concentric lines, 
which are only distinctly seen by the aid of a lense. In the interior 
of one valve exists a narrow V-shaped impression, having the point 
turned toward, and ending near, the beak. Length of the shell 
about 18 mm., breadth about 12 mm. 
This species of Lingula is quite distinct from any of the other 
forms at Ereré. In outline it approaches L. delia Hall, of the Ham- 
ilton group of New York State, and like that species it has the fine 
concentric surface lines. The single specimen found is, however, too 
imperfect to permit of its relations to the above mentioned species 
being accurately determined. 
Associated with Spirifera Pedroana, etc., in the Devonian sand- 
stone of Ereré. (Geological Commission, 1876.) 
