RHYACICHTHYS 23 



Local names, pttingan, at Casiguran; delaposcan, at Gingog, 

 Misamis Province, Mindoro; Ilocano name, kampa. 



Dorsal VII, 1-8; anal I, 8; tubules in the lateral line about 36; 

 scales in transverse series 11. 



Depth from 4| to 5| times in the length; length of head 

 equals or slightly exceeds depth; the eye contained 2.2 to 2.4 

 times in snout, which is contained twice or a little less than twice 

 in head. The flat interorbital space a fifth broader than eye. 



The forward part of head from tip of snout to preorbitals 

 forms an equilateral triangle; a very low crenulated ridge par- 

 tially encircles each eye, lying above and behind like a sort of 

 eyebrow, in the words of Cuvier and Valenciennes; the snout, 

 interorbital space and a broad triangle on nape, and the large 

 preopercles naked; a few small scales immediately behind eye; 

 the small opercle partially scaled, those on upper half very 

 small; the upper two-thirds of the muscular pectoral base cov- 

 ered with small scales; the upper half of pectoral covered for 

 three-eighths its length with small but conspicuous scales; the 

 basal half of caudal covered with small scales. 



The very large pectorals extend beyond the posterior end of the 

 ventral and resemble those of the Scorpaenidae and the Cottidae ; 

 the dorsals about equal in height and length of base. The caudal 

 contained about 4.4 times in head and trunk and very slightly 

 lunate. The lateral line begins behind eye, and passes back in 

 a loop over the pectoral, then descends below first dorsal to the 

 lower fourth of the height ; between the two dorsals it makes a 

 downward loop and under the beginning of the second dorsal 

 rises to the center of the side and continues on to caudal fin. 



The color in alcohol brown to yellowish, darkest on top of 

 head; the first dorsal has a black band near base and another 

 near margin, above which the free tips of the spines project; 

 the figure by Cuvier and Valenciennes shows the second dorsal 

 to have three transverse black bands, but in my specimens these 

 have disappeared ; the caudal is marked by transverse bars and 

 blotches of brown. 



Here described from two specimens, 104 and 106 millimeters 

 in length, collected in a tributary of Agno River, Luzon. I 

 have also received a specimen, 88 millimeters long, obtained 

 from a mountain stream near Bugasong, Antique Province, 

 Panay. 



Since writing the above I have received three specimens, 103 

 to 110 millimeters in length, from Mamator River near Casi- 

 guran, on the eastern coast of northern Luzon. There is a large 



