116 SOME CHINESE VERTEBRATES. 
acute. Scales moderate, longitudinally with fine striations. Lateral line in 
the middle of the side of the tail. Largest specimen eleven inches. 
Lustrous golden, darker on upper half of body and head; fins darker. 
Originally described from Huisien. 
Ichang. 
CTENOPHARYGODON IDELLUS (Valenciennes) Giinther. 
D. 10, A. 11, V. 9, P. 20; Ll. 43%, 18 scales from head to dorsal; Phar. 
teeth 4.2 | 2.5. 
Top and sides of head darkened by dots of black pigment; scales of back 
and flanks similarly darkened near the edges; fins dark on their edges, distally 
thickly dotted with black; lower surfaces uniform light. 
Shasi. 
MYLOLEUCISCUS ATRIPINNIS, gen. nov. sp. nov. 
D. 10, A. 11, V. 9, P. 21; Ll. 42%; 16 scales in front of the dorsal; Phar. 
teeth 5 | 5, in a single series. 
Form resembling that of Ctenopharygodon idellus, elongate, compressed 
and rather deep in the caudal region. Head about one fourth and depth two 
ninths of the length from end of snout to base of caudal, a little deeper than 
broad posteriorly, pointed in front, subquadrangular in cross section; crown 
broad posteriorly, convex transversely. Eye large, length two ninths of that 
of the head; bones of the orbital series narrow, preorbital bone little longer 
than deep. Mouth moderate, somewhat oblique, width and length about 
equal; maxillary hardly reaching a vertical from the orbit; intermaxillary 
protractile. No barbels. Pharyngeal teeth in a single series of five, two of 
which are very broad, stout, rounded molars, the remaining three being longer, 
more slender, and compressed with crowns of a different shape and concave. 
Fins rather small. Pectorals reaching two thirds of the distance to the ventrals. 
Dorsal origin midway from end of snout to base of caudal. Ventral origin 
below the third ray of the dorsal, fin not reaching as far back as the dorsal. 
Anal origin midway from origins of ventrals to base of caudal. Caudal notch 
not half the length of the fin. 
Body dark with puncticulations of black; fins blackish. 
Type:— No. 29817 M. C. Z. Hupeh: Shasi. W. R. Zappey. 
The genus Myloleuciscus may be characterized by a single series of pharyn- 
geal teeth, some of which are extremely broad, short, rounded molars and 
