»o. 1319. SOME JAPANESE FISHES— JORDAN AND STARKS. 535 



Pectoral rather slender and pointed, its length equal to eye and post- 

 Jorl)ital part of head. Anal beginning slightly in advance of dorsal. 

 Base of dorsal equal to head from anterioi- edge of preorbital. The 

 tip of the last dorsal ray when declined reaches to within a distance 

 equal to the diameter of the eye of the base of the upper caudal vnys. 

 The ventrals are inserted midwa}' between the base of the caudal rays 

 and a point at the middle of opercle. The lower lobe of the caudal is 

 the longer; its length equals that of pectoral, and is two-thirds the 

 diameter of the eye longer than the upper lobe. The caudal is not 

 deeply forked, the middle ra3's equal the postorbital part of the head. 



No silvery pigment remains upon the body except along the lateral 

 stripe, which is very conspicuous, much broader posteriorly than ante- 

 i-iorly, and bordered above by a dark line; back sparsely covered with 

 small dark brown points, which sometimes outline the scale pouches; 

 the}' usually arrange themselves in three lines medially along the back; 



Fig. 1. — Hypoehamphus kvrumeus. 



opercles bright silver}' ; top of head and upper jaw dusky, with black 

 dots; a black blotch on mandible below maxillary; process of mandi- 

 ble jet black; tins all colorless except caudal, which is dusky. 



This species differs from II. intermedlm (as described by Dr. Giui- 

 ther) in having a slightly shorter anal, smaller eye, more anterior ven- 

 tral, and pectoral not " blackish." 



This is a fresh-water species. Numerous specimens were taken in 

 the Chikugo River at Kurume, in the province of Chikugo, island of 

 Kiusiu. 



The type is 175 mm. in entire length and bears the number 7126 

 Ichthylogical collections, Leland Stanford Junior University Zoolog- 

 ical Museum. 



Dr. Ishikawa further records Ilyporhamplius dus-sHmien (Cuvier and 

 Valenciennes) from the Riukiu Islands. In this species of the Indian 

 Ocean the dorsal and anal are nearly scaleless and the ventral midway 

 between the head and the base of caudal. Sides with a silvei-y band. 

 D. 15; A. 14. Scales 52. 



7. HYPORHAMPHUS JAPONICUS (Brevoort.) 



Ilemirhamphus japoniciis Brevoort, Perry's Exp. Japan, 1856, ji. 280; Loo Choo 

 (Riukiu) known from a figure only. 



Tip of lower jaw to edge of opercles 3 times in length from same 

 point to center of margin of caudal. Tip of upper jaw to edge of 

 opercles half of last, or 6 times in total length. Height of head or 



