822 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvi. 



Type No., 7724, Ichthj^ological Collections, Leland Stanford Junior 

 University Museum. Cotypes are in the United States National 

 ^luseuni. Locality, Lake Biwa at Matsubara in Omi. 



Wc Ikivc many specimens of this species from Lake Biwa at Matsu- 

 bara and its tributary. Lake Yogo in Mino. It is distinguished chiefly 

 l>y the dark, distinct, and nearly uniform lateral stripe ])eginnino- on 

 the sixth scale from the head in a dusky ))luish spot. In young speci- 

 mens, the character is readily seen, and they are easily separated from 

 the young of other species. 



(/cfcvKfoV, blue; ffTiyj^ia, spot.) 



4. GNATHOPOGON Bleeker. 



frnathopoffon Bleeker, Ichth. Archipel. Iiidir. Prodr., II. 1860, ]>. 43-1 {I'lovgittn). 



Body elongate and compressed. Snout depressed and without bony 

 pi-ominence in front; eyes superior, not covered with eyelids; jaws 

 Avith thin and simple lips; maxillary <)])li(]ue, ending before the eye; 

 two maxillary barbels. Abdomen not keeled. Dorsal w^ith few rays 

 before ventrals and ending in front of anal; anal with few rays. Lateral 

 line slightly decurved. (Bleeker.) 



No species of Gnafhopor/cm, was obtained by Jordan and Snyder. 

 The genus is a doubtful one, perhaps not distinct from Acheilo(j7iathiis. 

 An East Indian species, javanlcus^ is referred ])y Dr. Bleeker to 

 Gnath()}><)(jon. 



(yvdOog jaw; Troycov, beard.) 



a Scales 5 — 38 — 7: pectoral.* not reaching root < if ventral^ ilDiKjatim, 6. 



aa Scales 4 — 35—5: pectorals reaching ventrals gniciUs, 7. 



6. GNATHOPOGON ELONGATUS (Schlegel). 



MIGITSUKI. 



Caj)0(':ta clomjula SciilectEL, Fanna .Japonica, Poiss., 1840, j). 200, ))1. c, lig. 1; 



streams about Nagasaki. 

 (Inntluipogim rlnii'judiK Joroax ami Snydeh, Check List Fisli. Jajian, litOl, p. 47; 



Lake Biwa. 

 BarhiiH //omo^e»r'.s GtJNTHEK, Cat. Fish., VII, 18()8, p. 136 (after Schlegel, the name 



cloiigatnn being preoccujiied in Barhiis). 



Head 4 in length of l)ody, ])etween tip of snout and emargination of 

 caudal, and somewhat more than depth of body; D. Ill, 7; A. II, G; 

 P. 15; V. 1, 7; about 38 scales on the lateral line; 5 scales l)etween 

 the back and the lateral line; diameter of the e3'e equal to the length 

 of snout, which is 4- in head. Mouth somewhat spacious, its cleft 

 very ol)rKiue, and extending nearly to the tip of the snout; maxillary 

 prolonged posteriorly for three-fourths the length of the snout; diam- 

 eter of th(> suliorbitals equal a third of the eye, Imt the length of the 

 posterior nearly twice that of the others; length of maxillary barbel 



