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specimens, about thrice or somewhat more in length of head. 

 Fins low, origin of dorsal before gillopenings. Maxillary teeth 

 in 2 series, in the outer series i6 — 20 teeth, conical, compressed 

 and more numerous than the inner series. On intermaxillary 

 plate a peripheral series of 10 — 14 larger teeth and one or two 

 central conical ones. On vomer 2 series, anteriorly diverging 

 and approaching the series on the intermaxillary plate; the 

 anterior tooth in each series conspicuously larger. The mandi- 

 bulary teeth in an outer series of 18 — 25, anteriorly with an 

 inner scries of 3 — 6 much stouter teeth. Brownish, all over 

 minutely dotted and speckled with darker brown and white, 

 less on head. Length 650 mm. [A specimen of G. pj-osopeion 

 of Bleeker's collection seen by us]. 



Habitat: Sumatra (Kauer, Priaman, Benkulen); Borneo; 

 Cocos-Island; Java (Patjitan, Karangbollong); Ambon; Ceram ; 

 Batjan; Halmaheira; Timor. — Pinang, Burmah, Andaman 

 Islands, Muscat, Seychelles, Rodriguez, China, West-Australia, 

 Pacific Islands. 



On coral reefs and near shore. 



3. Muraena (Gymnothorax) schismatorhynchus Blkr. 



Mtiraena schismatorhynchus Bleeker, Nat. Tijdschr. Ned, Indiii, IV. 1853, p. 301. 



Ettrymyctera crtidelis Kaup, Cat. Apodal Fish 1856, p. 73. 



Muraena congeroides Bleeker, Act. Soc. Scient. Indo-Neeil. VIII. i860, Achtste 



Bijdr. Vischfauna Sumatra, p. 87. 

 Gymnothorax cruddis Bleeker, Ned. Tijdschr. Dierk. I. 1863, p. 168. 

 Gymnothorax schismatorhynchtis Bleeker, All. Ichth. IV. 1864, p. 106. 

 Muraena schismatorhynchus Giinther, Cat. Brit. Mus. VIII. 1870, p. 127. 

 Rhinainuraena critima Jordan & Scale, Bull. Bur. Fish. Washington XXV. (1905) 



1906, p. 196. 

 Rhinechidna eritima Barbour, Proc. Biol. Soc. Washington XXI. 1908, p. 41. 

 Muraena schismatorhynchus Giinther, Fische der Siidsee, Heft IX. 1 910, p. 410. 



Height 14 — 22.5, head 6'^/, — 8, 2.6 — 3 in trunk. Head and 

 trunk 7io — '/,•? longer than tail. Eye 870 — ii> situated above 

 the middle of the cleft of the mouth, which is wide and goes 

 about twice in the head. The mouth can not be shut com- 

 pletely. Snout long and narrow, twice or thrice the diameter of 

 eye. Tube of anterior nostril wider at its top than at its base, 

 almost half as long as eye. Posterior nostrils with an elevated 

 rim forming a short tube. Dorsal and anal rather well developed, 

 the former beginning before gillopenings. Maxillaries with a 

 series of 25 — 30 rather small teeth, and anteriorly with an 



