2 Herre: Philippine Eels 207 



■Maxillary teeth in two or three rows, the inner row of five or more, 

 cf . Marginal teeth of intermaxillary in one row q tile 



d\ Marginal teeth of intermaxillary in two rows. 



e 1 . Color uniform brown... . G h runneus 



e\ Color not uniform broWn but spotted or variegated 

 f. Head 1.7 to 2.9 in trunk; gape 2 to nearly 3 in head. 

 „ „ G- meleagris. 



/ . Head 4 to 5 in trunk; gape about 3.5 in head G. polyuranodoa. 



! . Maxillary teeth in one row, or with an inner series of one to four 



fangs which disappear with age: 

 g\ Encircled by fifteen to thirty more or less irregular but definite 



h. Crossbands about thirty, about as broad as interspaces, these 



spotted with darker g. punctatofasciatus. 



h\ Seventeen to twenty-four crossbands, interrupted on belly and 



usually larger than interspaces q, petelli. 



Body not banded with distinct crossbands. 



P. Gill openings in a dark brown or black patch G. flavimarginatus. 



i 2 . Gill openings not in a dark patch. 

 f. Color uniform brown, dorsal moderately developed, not over 



half as high as body _. g. boschi. 



f. Coloration not uniform but more or less spotted or variegated. 

 A, 1 . Distinct dark spots over entire body, more or less in longi- 

 tudinal rows. 

 l\ Spots smaller than interspaces, smallest or wanting on head. 



I'. Spots larger than interspaces, those on head not smaller. 



G. favagineus. 

 ~. Body more or less marbled, reticulated, or with spots forming 



m\ More or less distinct white spots on jaws. 



n\ A dark brown or black spot at angle of jaw with a 



white spot in front of it G. chilospilus. 



n". No dark brown spot at angle of jaw, but a large brown 

 spot behind eye, bordered above and below by white 



lines or bands G. zonipectus. 



m 2 . No distinct white spots on jaws. 



o 1 . A black blotch at angle of mouth, uniting with a black 



band around chin G. philippinus. 



o\ No black blotch at angle of mouth. 

 p 1 . Vomerine teeth in two series, except in large old speci- 

 mens, when they are in one row. Yellowish, marbled 

 and reticulated with dark brown or finely mottled 



with dark and yellowish G. richardsoni. 



p-. Vomerine teeth in a single row, or irregular and par- 

 tially two rowed. 

 q 1 . Color dark brown spotted with lichenlike whitish 

 blotches; vomer with an irregular partially double 

 row of teeth; anal fin with white margin. 



G. kidako. 



