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PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXVI. 



and deeper emarginated caudal. According to the figure the pectoral ij 

 fin is represented as nearly two-thirds the length of the head, including \ 

 snout, or about equal to the space between the middle of the eye and ' 

 the posterior margin of the gill-opening. 

 (Named for Dr. David Starr Jordan.) 



II. LEUCOGOBIO MAYED.(E (Jordan and Snyder), 



Gobio muiiechv Joiw.w and Snydeh, Proc. U. S. Nat. iVIiis., XXIII, U)00, p. ?A2, 

 pi. IX, fig. 2; Lake Biwa, near Karasaki. — Jordan and Snyder, Check-List Ij 

 Fish. Japan, III, April 8, 1901, p. 46; Lake Biwa. i 



Head 4i; depth tti; D. Ill, 7; A. Ill, 6; P. 16; V. S; scales in 

 lateral line 42; 5 scales between origin of dorsal and lateral line, and 1 

 6 scales between the latter and the middle of the belly; pharyngeal ' 

 teeth 5, 3 — 3, 5; width of head a little less than 2 in its length; snout 

 3| in head; eye 4; interorbital space 3i; pectoral If; ventral 1^. 



Fig. 3. — LErroooBio mayed.t:. 



Body elongate, oblong and compressed. Head elongate, com- 

 pressed; snout rather bluntly roundtnl, and a trifle longer than the 

 e3'e; eyes moderate, anterior; mouth oblique. protractih\ the jaws 

 about equal and the maxillar}- not reaching to the front of the eye; 

 lips somewhat fleshy; a small maxillary barbel; pharyngeal teeth in 

 the larger row with narrow grinding surface, and some of them 

 slighth^ hooked; nostrils close together, in front of the eye above and 

 also a little before the end of the maxillar}^; interorbital space broad 

 and sligiitly convex. Gill-openings large and the meml)rane rather 

 broadly joined to the isthmus; gillrakers short, few, and weak; pscudo 

 branchiae large; gill-filaments rather long. Intestine short. Perito- 

 neum silvery. 



Scales rather large, of more or less uniform size, and cycloid; head 

 naked; no pectoral flap and the ventrals with a well developed flap. 



Origin of dorsal nuich in advance of the middle of the body without 

 caudal, and the tip of the first developed ray reaching as far poste- 

 riorly as the tip of the last when the fin is depressed; origin of anal 

 entirely behind dorsal and when the fin is depressed it does not r(>ach 

 quite half the distance to base of caudal; caudal deeply emarginate, 



