1. opniocEPHALtis. 479 



the body is contained fivo times and funr-fiftbs in the total k'ngtli, 

 the length of the head three times and fonr-fifths. The width of 

 the interorbital space is more than the extent of the snout, and one- 

 fourth of the length of the head. Cleft of the mouth large, the 

 maxillary extending behind the orbit. There arc ten series of scales 

 between the orbit and the angle of the pra^operculum. The pec- 

 toral does not quite extend to the origin of the anal fin, its length 

 being one-half of that of the head ; the length of the ventral is 

 neai-ly three-fourths of that of the jjectoral. A blach, white-edged 

 ocellus superiorly on the basal portion of the caudal fin. Ko dark 

 blotches are visible on the side of the single dried specimen. 

 East Indian continent. 



a. Nine inches long : stuffed. From the Collection of the Zoological 

 Society. 



This species is allied to 0. mantllus, from which it may be readily 

 distinguished by six longitudinal series of scales between the lateral 

 line and the anterior portion of the dorsal fin. 



21. Ophiocephalus marulioides. 



Blether, Bornrn, v. p. 424. 



I). 45. A. 30. L. lat. 55. 



Several larger teeth in the lower jaw. The heiglit of tlie })ody is 

 contained seven times and a half in the total lengtli, the length of 

 the head four times, the length of the caudal fin nearly five times. 

 The maxillary extends scarcely behind the orbit. The jjcctoi-als are 

 much longer than the vcntrals. Blackish green, ventrals whitisli ; 

 a black ocellus edged with red superiorly on the base of the caudal 

 fin. {Blcel:) 



Rivers of Sambas (Borneo). 



22. Ophiocephalus pleurophthalmus. 



Ophiocephalus pleurophthalmus, Blcrk. Nitfino-k. Tijihrhr. Ncdcrl. Ltd. 



i. p. 270, and Act. Soc. Sc. Indo-Ncdcrl. iii., Sumatra, \i. Ji7. 

 ui'ophthalnuis, Blcvk. Samutra, i. p. r>78. 



1). 40 42. A. 2y-;30. L. lat. 55-57. 



Large teeth in the lower jaw, on the vomer and on the palatine 

 bones ; two smaller ones on each side of the upper jaw. The heiglit of 

 the body is contained five or six times in the total length, the length 

 of the head three times and a half to nearly four times, the length 

 of the caudal fin five times and three-fifths. The maxillary extends 

 to, or somewhat behind, the vertical from the ])osterior margin of 

 the orbit. The length of the ventral is four-fifths of that of the 

 pectoral. Olive, with five black ocelli edged with Avhitish along 

 the sides, the last on the middle of the base of the caudal fin ; head 

 with two oblique brownish bands running from the eye to the inter- 

 opcrculum ; inferior parts of tlic sides spotted with brown, each spot 



