SICYOPTEEUS 303 



different in detail, and one unlike any hitherto described, with 

 two lateral clefts and the whole lip margin more or less den- 

 ticulate-crenulate. 



The superficial resemblance between quite divergent species 

 of Sicyopterus is very great and it is only possible to separate 

 some of them by a critical examination of the lips, supplemented 

 by a microscopic examination of the teeth. The differences in 

 the mouth and teeth, together with the scale count, may be 

 relied upon to separate species almost identical in general ap- 

 pearance and color markings. 



Key to the Philippine species of Sicyopterus. 



a*. Upper lip entire; scales 65 in a longitudinal series, 16 to 18 in a trans- 

 verse series, and 25 to 30 before first dorsal S. lacrymosus. 



a 2 . Upper lip cleft. 



6 1 . Upper lip with a very slight median cleft and no lateral clefts; lon- 

 gitudinal series of scales 75 to 80, transverse, 17.... S.- cynocephalus. 

 b*. Upper lip with two lateral clefts; a median cleft absent or present. 

 c 1 . Upper lip with two lateral alveoluslike clefts opposite eyes and 

 with a median cleft; papillae or tubercles on gum beneath it. 

 <P. Scales more than 65 in a longitudinal series. 



e 1 . About 75 scales in a longitudinal series, 20 in a transverse 



series, 26 to 32 before first dorsal S. crassus. 



e 2 . Seventy scales in a longitudinal series, 20 to 22 in a transverse 



series, 36 to 40 before first dorsal S. fuliag. 



d 2 . Fifty-five to 57 scales in a longitudinal series, 14 or 15 in a 



transverse series, 14 to 16 before first dorsal.... S. extraneus. 



c 2 . Upper lip with two narrow lateral clefts, not saclike, and no median 



cleft; lip margin denticulate-crenate; no papillae or tubercles on 



gum beneath it....- S. panayensis. 



155. SICYOPTERUS LACRYMOSUS sp. nov. 



PLATE 24, FIG. 1 



Ilocano name, paliling. 



Dorsal VI, 1-10 ; anal I, 10 ; there are 65 scales in a longitudi- 

 nal series, 16 to 18 in a transverse series, and 25 to 30 before 

 first dorsal. 



The body robust, laterally compressed, the dorsal and ventral 

 profiles nearly horizontal, the depth 4.8 to 5.1 times in length; 

 the broad blunt head 4 to 4.17 times in length, flat above, its 

 breadth slightly exceeding its depth arid 0.75 to 0.9 of its own 

 length; the snout full, rounded, protuberant, 2.2 to 2.6 times 

 in head; the eyes small, lateral but very high up so that their 



