232 The Philippine Journal of Science 1923 



Depth about 18 to 33 in length; head from 7.1 to nearly 10.4; 

 tail equal to, somewhat shorter, or somewhat longer than head 

 and trunk. 



A specimen from Zamboanga has the following dimensions: 

 Length, 790 millimeters; head, 76; tail, 357; trunk, 357; depth, 

 36. Eye 6 millimeters in diameter and contained twice in snout, 

 which is heavy, blunt, and rounded and contained 6f in head; 

 mouth wide, closing completely, its horizontal cleft about 3 in 

 head and reaching far beyond eye which is forward of middle of 

 jaw; anterior nostrils on front of snout; posterior nostrils on 

 top of head forward of eyes and with well-developed rims ; their 

 interspace twice in distance from tip of snout to posterior 

 margin of eye. 



The heavy jaws are subequal, with two rows of teeth in each ; 

 those in outer series much smaller, compressed, and close set; 

 in mandible outer row is composed of numerous sharp-pointed 

 teeth, inner row of a few long canines; in both jaws teeth in 

 inner series much the longer and depressible; outer maxillary 

 series continued on intermaxillary plate, the teeth much smaller 

 and inclosing numerous longer, depressible, irregularly placed 

 teeth ; a row of five or six large, pointed canines on vomer. Co- 

 lor uniform dark chocolate brown, skin thick and leathery. 



Another small specimen from the same locality has the follow- 

 ing measurements: Length, 330 millimeters; head, 40; tail, 170; 

 trunk, 120; depth, 17; color reddish brown. Pores on lips and 

 chin large and conspicuous as in Bleeker's figure of Gymnomu- 

 rarna pantherina. This specimen resembles Uropterygius mar- 

 moratus in some respects but has the dentition of concolor. 

 Five small specimens from Calapan, Mindoro, ranging in length 

 from 106 to 115 millimeters, are typical in every respect except 

 in their greater proportionate depth. The pores on jaws and 

 snout are very noticeable in these specimens. Another speci- 

 men, from Iba, Zambales, having a length of 244 millimeters, is 

 also typical. Previously recorded from southern Negros by 

 Jordan and Seale. 



A widely distributed eel, but according to Gunther not common 

 anywhere. It is found from the Red Sea and Mauritius to the 

 Philippines, Australia, and the Society Islands. 

 Uropterygius mannoratus (Lacepede). 



Gymnomurssna marmorata Lacepede, Hist. Nat. Poissons 5 (1803) 

 648; Day, Fishes of India (1878-88) 675; Gunther, Fische d. Siidsee 

 3 (1910) 425; Weber and Beaufort, Fishes Indo-Austr. Arch. 3 

 (1916) 397, figs. 193, 194. 



