CHONOPHORUS 215 



Pampanga River, where the tides of Manila Bay make its lower 

 reaches salt, or at least brackish. 



Chonophorus lachrymosus is related to C. genivittatus, but is 

 well separated from that species. It is to be expected in other 

 mountain streams flowing into the northern part of Manila Bay. 



In the Bureau of Science collection is a specimen, 85 milli- 

 meters long, labeled Talacogon, Agusan Province, Mindanao, 

 1907, which I place here. Although it varies in some particulars 

 from the Quingoa River specimens and has lost all trace of the 

 characteristic crossbands, it is beyond doubt Chonophorus lachry- 

 mosus (Peters). 



The body elongated, oblong, much flattened laterally, the 

 dorsal profile nearly horizontal, the belly gently curved; the 

 depth 5 times, the head 3.7 times in length; the snout wide, 

 convex, blunt, 3.28 times in head; the teeth in upper jaw 

 sharp, slender, widely spaced, in three rows; in lower jaw in 

 two closely crowded rows ; the eyes high up, lateral, their diam- 

 eter f of the length of snout and 3.82 times in head; the 

 interorbital space f as wide as eye; there are broad muciferous 

 channels above and behind eye and crossing over behind inter- 

 orbital, a large mucus pore behind eye, two pores behind pre- 

 opercular margin, and two above opercle; all the dorsal spines 

 elongated and threadlike, the third the longest, of total length 

 and reaching to base of sixth dorsal ray when depressed; the 

 second dorsal and anal of similar shape, both longest posteriorly ; 

 the last ray of second dorsal equal to head in length, the last 

 ray of anal more than greatest depth of body; the pectoral is 

 injured but was evidently equal to head in length; the ventrals 

 extend to anus and are a little longer than head ; the broad, flat, 

 caudal peduncle contained 2.3 times in head and 1.4 times in 

 its own length ; the caudal is damaged but was evidently slightly 

 longer than head; the long, slender, pointed anal papilla is 

 equal to the interorbital. 



The color after nearly twenty years in alcohol uniform yel- 

 lowish, darker above and paler below, with a broad triangular 

 reddish brown spot extending from base of eye downward 

 across cheek; a reddish violet spot on upper part of pectoral 

 base ; the first dorsal marked by a broad, transverse, basal band 

 of violet-black, above which is a white crossbar and another 

 violet-black band; higher up are four other alternate white 

 and violet-brown spots; the second dorsal has a basal transverse 



