BUFFALO SOCIETY OF NATURAL SCIENCES 193 



that the circumstances were hazy in the writer's mind; and in fact he 

 may have confused his specimen with some other. Obviously the 

 label cannot carry conviction. Furthermore, among the various col- 

 lections of fishes from the Connecticut Valley Trias there is not a 

 single specimen of Dictyopyge, notwithstanding that hundreds of 

 specimens have been collected. Although this fact, being mere nega- 

 tive evidence would not in itself be conclusive, still it lends force to the 

 argument that the label on the specimen is probably incorrect. In 

 any event, there is no positive proof at present that Dictyopyge occurs 

 anywhere else but in the Richmond, Va. locality. 



We may note that at the time Newberry^^ studied this species, 

 specimens were abundant at the type locahty, and numbers were 

 frequently found on one slab, as in the case of specimens of Semionotus 

 from the Karoo formation of South Africa. Newberry mentions a 

 slab which ' 'though scarcely more than a foot square, carried impres- 

 sions of over forty individuals."'^ 



The Buffalo Museum is fortunate in possessing a slab of shale con- 

 taining remains of ten fishes, two or three of them almost complete 

 (PI. 67). From a study of this specimen we are able to give a revised 

 description of the species. 



Revised description. — Fish gracefully fusiform, attaining a length 

 of 15 cm. Head contained five times, and greatest depth six 

 times in the total length. Dorsal originating in advance of anal; 

 triangular, about § the size of anal. Anal the largest of all the fins, 

 arising opposite middle of dorsal and extending beyond beginning of 

 caudal; with about 25 broad, robust articulated rays; its posterior 

 margin rounded, not straight. Caudal heterocercal, with about 35 

 rays; its upper lobe fringed with about 50 small fulcra giving the 

 margin a braided appearance. Pectoral relatively small. Ventral 

 with 10 to 12 robust rays anteriorly margined with minute fulcra. 

 Cranial bones ornamented with scale-like confluent tubercles and 

 irregular intersecting ridges (PI. 24, fig. 3). Scales smooth and highly 

 poHshed. Lateral line prominent. 



The single specimen in the collection may be described as follows : 



E 2126 A slab of shale 25 by 17 cm., containing the remains of 10 

 fishes, two of them more or less complete, (PI. 67). 

 Triassic coal beds; Richmond, Va. The specimen was 



M Newberry, J. S.: Fossil fishes and fossil plants of the Triassic rocks of New Jersey and the Con- 

 necticut Valley. Monograph V. S. Geol. Surv., xiv, 64, 1888. 

 w Loc. cit. p. 65. 



