NO. 1235. LIST OF JAPANESE FISHES— JORDAN AND SNYDER. 



763 



spots, one on each ray. Pectorals and \(Mitral.s without .spots except 

 at the base of the former. 



Length of the tj^pe, 100 nun. 



Smaller specimens have the spots on top of head and th(^ ])ars or 

 spots on cheeks distinct; anterior parts of ])ody with small, dark spots; 

 sides with 8 or i> transverse light-colored bands with small light blotches 

 l)etween them; in some cases the bands Ix'ing bi-oken up into elongate 

 blotches. The dark caudal spot and the white tei-minal 1)and are very 

 distinct. 



On the smaller specimens, a lateral line is suggested l)y a row of ^9 

 o-roups of minute papillae extending along the middle of the sides. 

 Each group has 5 or <> papillae in one, or occasionally tw^o vertical 

 rows, which are a little less than the width of a .scale in length. A 

 mere trace of the lateral line is seen on large specimens. 



The specimen from Tsushima appears to have no light spots on the 

 sides. The dark spot at base of caudal is scarcely perceptible. 



This species is very abundant in the rock pools of the headlands of 

 eastern Japan, from Tokio to Nagasaki. About Awa and Misaki it 

 swarms in all the rock pools warmed l)y the Kuro Shiwo. 



Measurement.'^ of Chaaui'Ktx mmikbis. 



Length in millimeters 



Depth fixpresaed in hundredths of 

 length 



Depth of caudal peduncle 



Length of lu'iul 



Length of snout 



Wid\h ( >f in ten irbital .space 



Diameter of orl>it 



Distance frtan .snout to spinous dorsal . . 



I listance f n an .snout to soft dorsal 



Height of longest dorsal spines 



Height 1 if lotigest <1< a-sal rays 



Distance from snout to anal tin 



Hcigiit of longest anal rays 



Lcntfth ol' caudal peduncle 



Len'iith of caudal tin 



Length of jiccforal tin 



Length <if ventral fin 



Number of dorsal spines 



Number of dorsal rays 



Number of dorsal anal rays 



Number of pectoral rays 



Number of scales in lateral .series 



Number of scales in transverse series . . 



13 i 14 



This species is the type of a distinct genus, Chasmiafi, related to 

 GUIlchthys and ]*I<ifij<i<>hh(x. It may be thus defined: 



l'>odv moderately elongate, covered with minute, cycloid scales. 

 Head broad, naked, flattish above, wide between the eyes. Mouth 

 very large, horizontal, the upper jaw projecting; teeth in moderate 

 bands; maxillary much produced backward, extending beyond the 

 eyes; tongue broad, not notched; i.sthmus very broad, the gill-open- 

 ings restricted to the sides; no barbels; shoulder girdle without fleshy 

 Haps. Dor.sal fins short, low, the first of six slender spines, caudal 

 rounded; pectoral with free silky tips to the rays above; ventraLs short 



