1897.] NATURAL SCIENCES OF PHILADELPHIA. 57 



Dasyatis walga (Miiller & Henle). 



Trygon walga, Giinther, Cat., VIII, 475. 

 Recorded by Sauvage. 



SILURIDiE. 



1 Chlarias fuscus (Lacepede). 



Macropteronotus fuscus Lacdpede, Hist. Nat. Poiss. 

 Clarias fuscus, Giinther, Cat. Fishes, V, 18, 1864. 



Two specimens, 62 inches long. 



Top of head 3 \ ; depth 6 in length ; eye 5 in interorbital. D. 56 ; 

 A. 43 ; P. 1-8. 



Gill membranes united at a broad angle, only the margin free 

 from the isthmus. Dorsal and anal single, long, separated from 

 caudal. Chamber for the dendritic accessory branchial organs closed 

 by palmate flaps, situated on the gill arches. A prominent notch 

 with a fleshy protuberance above it on anterior edge of shoulder 

 girdle. The clavicles form broad striate plates, covered by thin 

 skin, meeting by suture, the hinder edges forming a broad angle. 

 Head depressed, its width II in length, equal to head in front of 

 snout; occipital process broadly rounded; upper and lateral parts 

 of head osseous, granular, covered by thin skin. Two fontanelles, 

 one just back of eye, the other in front of occipital. Eyes small, 

 with free margins. Head depressed, its width If in its length, equal 

 to head in front of occipital fontanelle. Villiform teeth in bands on 

 jaws and vomer. Barbels eight, that of the maxillary reaching tip 

 of pectoral spine, the nasal scarcely to base of occipital process. 

 Pectoral only with spine, which is 2| in top of head, anterior edge 

 thin and finely serrate, irregularly serrate behind. Origin of dor- 

 sal over tips of pectorals, ventrals reach origin of anal, caudal 

 slightly rounded. Color, in alcohol, uniformly dark above, lighter 

 on belly. 



Tachysurus sinensis Lacepede. 



Tachysurus sinensis Lacepede, V, p. 151, pi. 5, fig. 2, China. 

 Arius falcarius, Giinther, Cat. Fishes, V, 168, 1864 ; Day, Fishes of India, 

 468, pi. 106, fig. 5, 1888. 



Three specimens, Si inches long. 



Head 4 ; depth 5 J ; eye 4|. D. I, 7 ; A. 16 to 18. 



CYPRINIDJE. 



Cyprinus carpio Linnaeus. Giinther, Cat. IV, 25. 



Recorded by Sauvage. 



1 This generic name dates in binominal nomenclature from Scopoli, 1777, 

 who spelled it Chlarias. 

 5 



