. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Science. No. 109.] 147 Strophomena carinata, and some of the specimens before me are from the same locality and position as those investigated by him. I am inclined to think there must have been a typographical error in printing the name of this species in the Journal of the Academy, both because there is no carina about the shell, and because Mr. Conrad had previously (1839) applied that name to a shel
. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Science. No. 109.] 147 Strophomena carinata, and some of the specimens before me are from the same locality and position as those investigated by him. I am inclined to think there must have been a typographical error in printing the name of this species in the Journal of the Academy, both because there is no carina about the shell, and because Mr. Conrad had previously (1839) applied that name to a shell supposed to belong to the same genus. I am much inclined to think our shell is identical with C. maclurea of Norwood and Pratten, Their figures and description agree very nearly with specimens of this species of the same size as those they figure, excepting that their shell appears to have had one spine more on each side of the beaks. Geological 'position and locality. Hamilton group : Seneca lake shore, Moscow, etc. ^. Ch3netes cokonata. * Chonetes scitula ( n. s.). Shell small, semicircular ; hinge not quite equalling the greatest breadth, obtusely angular at the extremities : dorsal valve concave ; area narrow, inclined forwards from the hinge-line, having a small projecting dental process in the centre : ventral valve convex in the middle, depressed at the extremities; beak small, slightly convex ; area narrow and arcuate, having five tubular spines along the margin on each side of the beak, of which the two or three inner ones are very small or mere gra- nules, while the outer two are larger and a little removed from the extremities of the hinge ; foramen small, broad triangular, closed above by a convex deltidium, and below by the strongly projecting dental process of the other valve. Surface ornamented by distinct abruptly rounded strige, of which twelve to eighteen may be counted near the beaks; but from the bifurcation and intercalation of others between these, the n
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