296 PALEONTOLOGY OF NEW-YoRK. 
Rome, Oneida county. I have collected the same species from Cincinnati ( Ohio), and 
Madison (Indiana). In the latter it place it is associated with Favistella stellata and 
Ambonychia radiata. (State Collection.) 
203. 4. MODIOLOPSIS NASUTUS. 
PL. LXXXI. Fig. 2. 
Cypricardites nasuta. Conrap, Ann. Geol. Report, 1841. 
— modiolaris, Emmons, Geol. Report, 1842, pag. 403, fig. 4. 
Reference pag. 159, pl. 35, fig. 7, of this volume. 
Narrow, subelliptical ; base straight; cardinal line nearly direct; anterior extremity 
produced into a narrow extended nasute form ; posterior extremity obliquely truncated, or 
more or less rounded ; surface scarcely marked by concentric lines of growth. 
This shell is distinguished from the preceding species, in being uniformly narrower ; all 
that part behind the beak is of nearly equal width, and the beak more central, being 
distant from the anterior extremity one third the length of the shell. The muscular 
impression is scarcely distinct in any specimen which I have examined. The characters 
represented in the figure are constant in several specimens examined, and there appears 
to be no varieties intermediate between this one and the M. modiolaris, which is a far 
more abundant fossil. 
Position and locality. This species occurs in the arenaceous strata of the higher part of 
the Hudson-river group, and I have never seen it in the softer shales. The principal 
localities are near Rome, Oneida county, and Loraine, Jefferson county. (State Collection.) 
352, 12. MODIOLOPSIS TRUNCATUS (n. sp.). 
Pu. LXXXI. Figs. 3 a, b. 
Compare Cypricardia Deshayesiana, DE VERNEUIL, Pal. Russia and the Ural Mountains, pag. 304, pl. 20, fig. 1. 
Oblique, transverse, sub-trapezoidal ; the cardinal and basal margins diverging from the 
anterior extremity, convex; beaks near the anterior extremity, with an obscure elevated 
ridge extending obliquely to the base; posterior extremity obliquely truncate ; muscular 
impression very distinct, a little in advance of the beaks, and at the anterior extremity, in 
the cast projecting beyond the margin (see figure ). 
This shell differs but little from some of the varieties of M. modiolaris ; but it is pro- 
portionally broader, and the beaks are closer to the anterior extremity, while the muscular 
impression seems to be placed upon the very margin of the shell. It is much less common 
than the M. modiolaris, and the few specimens examined appear to be constant in the 
characters given. It bears a close resemblance to the figure of p—E VERNEvIL cited above, 
but it is less ventricose, our specimen being crushed and destitute of the shell. 
Fig. 3 a. View of the right valve of this species. 
Fig. 3 b. Profile view, one valve being more compressed than the other. 
Position and locality. This species occurs near Rome, Oneida county, and at Cincinnati 
(Ohio). 
