NO. 1909. JAPANESE SHORE FISHES— SNYDER. 443 



CHJENOGOBIUS MACROGNATHOS (Bleeker). 



Tomakomai ; Takamatsu R., Akune. 



CHLOEA CASTANEA (O'Shaushnessy). 



Nanao; Same; Aikawa; Shiogama; Dogo Island. Collected in tlie 

 rice fields and small streams. 



CHLOEA MORORANA Jordan and Snyder. 



^fororan and Shiogania. 



Large numbers of this species were secured with a small seine in the 

 shallow water near shore at Mororan. The males are somewhat 

 more slender than the females, and the fins are a little higher and 

 longer. The dorsal surface is often much less reticulated than in the 

 females and the branchiostegal membranes and the ventral, dorsal, 

 and anal fins are dusky or even black in color. 



CHASMICHTHYS DOLICHOGNATHUS (HUgendorl). 



Hakodate; Same; Aikawa; Msaki; Shimonoseki; Mitajiri; Tane- 

 gashima; Akune pools. 



This species appears to be more abundantly represented at Msaki 

 than at any other point visited, where individuals fairly swarm in the 

 shallow pools left near shore by the fallmg tide. 



CHASMICHTHYS GULOSUS (Gulchenot). 



Aikawa; Msaki; Shimonoseki; Mitajiri; Kagoshima; Akune; in 

 pools. 



This is the most common tide-pool species near Kagoshima. 



PTEROGOSroS VERGO (Temmtock and Schlegel). 



One large specimen was taken in a large rock pool at Misaki. 



PTEROGOBmS ELAPOIDES (Gunther). 



Shiogama ; ^Misaki pools. 



What we now have reason to believe is the male sex of this species 

 was described by Jordan and Snyder as P. daimio. Males are to be 

 readily distinguished by their more robust bodies, brighter colors, the 

 dark bands being blacker and almost twice as large as those of the 

 females, and by generally having higher fins. Females are much 

 paler in color, the bands are very narrow and there is an extra band 

 or spot almost always present on the base of the caudal. A round 

 spot is present in the same place on an occasional male. The writer 

 has examined a large series of specimens of both sexes and no inter- 

 gradation of characters has appeared.' In our collecting the sexes 

 were not found together, and the male specimens taken far out- 

 number the females. The distinct color differences of the sexes, the 

 fact that the two color phases were not found associated, and the 

 poorly preserved specimens examined by Jordan and Snyder lead 

 them to the conclusion that the males belonged to a distinct species. 



I Regan, Annals and Magazine, ser. 7, vol. 15, Jan., 1905, p. 22. 



