. Catalog of fossil fishes in the Carnegie Museum. Fishes, Fossil. 372 MEMOIRS OF THE CARNEGIE MUSEUM. In Part I of Thiolliere's Poissons Fossiles de Bugey, p. 23, diagrams are given showing the complete dentition of this species. Several examples of the detached upper and lower dental plates, perhaps referable to this species, are preserved in the collection of the Carnegie Museum, and the most perfect of these is shown of the natural size in the accompanying Fig. 2. Detached splenial dentition of a Pycnodont fish from Cerin, France, provisionally re- ferred to Microdon itieri T
. Catalog of fossil fishes in the Carnegie Museum. Fishes, Fossil. 372 MEMOIRS OF THE CARNEGIE MUSEUM. In Part I of Thiolliere's Poissons Fossiles de Bugey, p. 23, diagrams are given showing the complete dentition of this species. Several examples of the detached upper and lower dental plates, perhaps referable to this species, are preserved in the collection of the Carnegie Museum, and the most perfect of these is shown of the natural size in the accompanying Fig. 2. Detached splenial dentition of a Pycnodont fish from Cerin, France, provisionally re- ferred to Microdon itieri Thioll. X 1/1. Cat. No. 4241. Family EUGNATHIME. " Trunk fusiform or elongate, not much laterally compressed. Cranial and facial bones moderately robust, externally enamelled, and opercular apparatus complete; mandibular suspensorium nearly vertical or inclined backwards and gape of mouth wide; snout not produced; premaxillse in contact mesially and usually separate; marginal teeth conical, and larger than the inner teeth. Notochord usually persistent, the vertebrae rarely more than incomplete rings. Fin-rays robust, articulated, and divided distally; fulcra conspicuous. Dorsal fin short and acu- minate. Scales rhombic, sometimes with rounded postero-inferior ; (A. S. Woodward, I. c, Pt. Ill, p. 285). Genus Caturus Agassiz. " Trunk elongate-fusiform. External head-bones and opercular bones feebly ornamented with rugae and tuberculations, all except the cheek-plates robust; snout obtusely pointed, and maxilla straight or with a slightly concavely-arched dentigerous border; teeth relatively large and arranged in a sparse series on the margin of the jaws; smaller on the palatine and on the splenial, where they are in single series anteriorly, minute and almost granular on the other inner bones; preoperculum nearly smooth and narrow; operculum deep, much broader below than above, and suboperculum of moderate size. Ossifications in the sheath of the notochord ins
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