. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. Raymond : Bkachioi'oda an'd r)siRAC0UA of the Chazv. 253 few have four on the fold, three in the sinus, and two on the sides; an occasional specimen has two on the fold and one in the sinus; and one indi\i(lual shows a siniph' fold and sinus as in Camarella longirostris. Locality.—This species is common at Crown Point, Valcour Island, Plattshurgh. X'alcour, Chazy, and Cooperville, New York, and the Mingan Islands. rill". OSTRACODA. In a pre\ious jiaiHT the writer described two new specie
. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. Raymond : Bkachioi'oda an'd r)siRAC0UA of the Chazv. 253 few have four on the fold, three in the sinus, and two on the sides; an occasional specimen has two on the fold and one in the sinus; and one indi\i(lual shows a siniph' fold and sinus as in Camarella longirostris. Locality.—This species is common at Crown Point, Valcour Island, Plattshurgh. X'alcour, Chazy, and Cooperville, New York, and the Mingan Islands. rill". OSTRACODA. In a pre\ious jiaiHT the writer described two new species of ostracods from the Chaz>-, but did not figure them. The present brief note is presented j^rincipally to give figures of three of the more common species. The ostracod fauna of the Chaz>- is not a very large one, and the specimens are not well preserved. Beside the four species enu- merated in this paper, the collection contains representatives of a small form with a long horn in the center of the \entral margin, and single valves of three or four species of small, smooth shells. Genus Leperoitia Rouault. I. Leperditia limatula Raymond. Leperditia Ihnalida Raymond, 1905. American Journal of Science, Series 4, Vol. XX, p. Fig. 25. Leperditia UmaLula Raymond. Two photographs of the holotype^ both larger than natural size. The second photograph and the one of Eiirychilina below, are by Prof. George H. Hudson of Plattsburgh, N. Y. Description. "Shell of medium size, a little smaller than Leperditia fabiilites, oblong in outline, higher bthind than in front. Hinge short, straight. Anterior end regularly rounded. The posterior end slopes back almost straight for a short distance, but is broadly rounded on the lower posterior margin. The e\e tubercle is small, on some specimens sharp^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may n
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