386 



single series of more or less than 15 teeth, anteriorly with a 

 few depressible, caniniform teeth at their inner side. Uniform 

 brown, fins with a white margin. Length 966 mm. 



Habitat: Java (Banjuwangi); Island Kanjungan Ketjil!; 

 Island Saleyer!; Buru; Ambon!. Red Sea, Region of Mada- 

 gascar (Sauvage), Japan. 



20. Muraena (Gymnothorax) boschi Blkr. 



Muraena Boschi Bleeker, Verb. Bat. Gen. XXV. 1853, Muraenoid. p. 52. 



Muraena monochrous Bleeker, Nat. Tijdschr. Ned. Indie X. 1856, p. 384. 



Gymnothorax Boschi Bleeker, All. Ichth. IV. 1864, p. 105. 



Gymnothorax monochrous Bleeker, 1. c. p. 106. 



? Gymnothorax mactilaepinnis Steindachner, Sitzber. Akad. Wien LIII. 1866, 



p. 473 [nee Blkr.]. 



Muraena afra Giinther, Cat. Brit. Mus. VIII. 1870, p. 123 (pro parte). 

 ? Muraena afra Day, Fishes of India 4. 18781888, p. 671. 



Height 12 20, head 7.8 8, 2.7 2.8 in trunk. Head and 

 trunk equal to tail or about J / 4 of length of head shorter. Eye 

 9 u, situated about above the middle of the cleft of the 

 mouth, which goes 2.2 2.6 in head. The mouth can be shut 

 completely. Gillopenings not much narrower than eye. Dorsal 

 and anal moderately developed, the former beginning before 

 gillopenings. Maxillaries with an outer row of 12 16 rather 

 pointed teeth, and anteriorly with an inner row of I 4 larger 

 ones, which disappear with age. Intermaxillary plate with a 

 peripheral series of 12 20 teeth, which are longer than those 

 of the maxillaries, and with a mesial series of 2 or 3 long 

 canines. Teeth on vomer uni- or subbiserial, 79, smaller than 

 the other ones. In each mandible 18 24 teeth, the posterior 

 ones equal to those of the maxillaries, the anterior ones larger, 

 in young specimens an inner series near symphysis of about 

 4 large ones. Colour uniform brown, lighter below. Length 

 over 600 mm. 



Nom. indig. : Ladu (Ternate). 



Habitat: Simalur!; Sumatra (Siboga, Benkulen); Singapore; 

 Java; Celebes?; Ambon; Roti!; Ternate; Sangir Islands. 



GtJNTHER united this species with Gymnothorax afer Bl. 

 from the Atlantic. Under this name several later authors 

 mention an eel from the Red Sea, the Indie and from Australia. 

 We have no material to decide if this species is the same as 

 G. dose hi. 



