222 GOBIES OF THE PHILIPPINES 



near margin of second dorsal; sometimes the ventrals have a 

 narrow pale or whitish margin along sides. 



Here described from a series of males, 45 to 65 millimeters in 

 length; the type is No. 11452 Bureau of Science collection. I 

 have examined a series of one hundred thirty-six specimens, from 

 19 to 65 millimeters in length, collected by me in June, 1921, 

 from Lake Siit, a small, deep, fresh-water crater lake beside the 

 sea on the north coast of Jolo Island. A female specimen, 29 

 millimeters long, was much distended with eggs and about ready 

 to spawn. In small specimens the crossband on the dorsals may 

 be colorless instead of white. 



The Bureau of Science collection also contains six typical 

 specimens, 31 to 54 millimeters in length, collected by me from 

 Titunod River, Kolambugan, Lanao Province, Mindanao. 



Siitensis, from Lake Siit. 



104. TAMANKA TAGALA sp. nov. 



Dorsal VI, 1-7 ; anal I, 7 ; there are 52 scales in a longitudinal 

 series, 16 in a transverse series, and 25 to 30 before the dorsal 

 fin. 



The body slender, laterally compressed, with a large, broad, 

 dorsally flattened head, the dorsal and ventral outlines nearly 

 parallel, the back slightly arched, the depth 4.7 times, the head 

 3 times in length ; the head much broader than deep, the depth 

 1.44 times in the breadth, which is 1.37 in its length; the broad, 

 bluntly rounded snout 4.1 times in head; the eyes high up, lat- 

 eral, a tenth shorter than snout, and equal to interorbital ; 

 the mouth rather large, oblique, the jaws equal, the posterior 

 angle of maxillary beneath middle of eye; the teeth in upper 

 jaw in four rows, the outer one of large, widely spaced teeth, 

 the others minute; the lower jaw has a band of four rows of 

 minute teeth; the body everywhere covered with scales, largest 

 and ctenoid on sides and posteriorly, becoming smaller and 

 cycloid before first dorsal, where they extend forward beyond 

 a line above posterior margin of preopercles; the opercles cov- 

 ered with about seven rows of small cycloid scales ; the dorsals 

 widely separated, the first dorsal falling far short of touching 

 second dorsal when depressed ; the third spine longest, 1.44 times 

 in depth, 2.3 times in head; the second dorsal short, the fifth 

 ray longest, lacking much of reaching base of caudal when de- 

 pressed, equal to depth; the anal much lower, the posterior ray 

 longest, about 1.6 times in depth and 2.5 times in head; the 

 caudal peduncle large, its depth 1.67 times in its own length and 



