1. opinocEPnALTrs. 479 



the body is contained Ave times and four-fifths in the total length, 

 the length of the head three times and four-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 are ten series of scales 

 between the orbit and the angle of the prseoperculum. 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 

 nearly three-fourths of that of the pectoral. A black, white-edged 

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

 blotches are A-isiblc 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. marulius, from which it may bo readily 

 distinguished by six longitudinal series of scales between the lateral 

 line and the anterior portion of the dorsal fin. 



21. Ophiocephalus marulioides. 



Sleeker, Borneo, v. p. 424. 



D. 45. A. 30. L. lat. 55. 



Several larger teeth in the lower jaw. The height of the body is 

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

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

 The maxillary extends scarcely behind the orbit. The pectorals are 

 much longer than the ventrals. Blackish-green, ventrals whitish ; 

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

 fin. {BUeTc.) 



Rivers of Sambas (Borneo). 



22. Ophiocephalus pleurophthalmus. 



Ophiocephalus pleurophthalmus, Bleek. Natuurk. Tijdschr. Nederl.Ind. 



i. p. 270, and Act. Soc. Sc. Indo-Nederl. iii., Sumatra, p. 37. 

 urophthalmus, Bleek. Sumatra, i. p. 578. 



D. 40-42. A. 29-30. 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 height 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 posterior margin of 

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

 pectoral. Olive, with five black ocelli edged with whitish 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- 

 operculum ; inferior parts of the sides spotted with brown, each spot 



