OPHISURIDJI. 27 



Mandibulars, 12. All the teeth conical, pointed, and of various 

 heights. 



Rays: Br. 23; D. 510; A. 175. 



Sumatra. One specimen measured 34-3 in. in length [Bleeker). 



This species seems not to belong to this place, since it departs 

 from the generic character in many essential points. 



54. Sphagebrakchus anceps. 

 Dalophis anceps. Cantor, Mai. Fish, tab. 6, 1-4. 



Head comparatively short, and terminating in a short conical 

 muzzle. Eye very minute. Measured to the gill-opening, the 

 head is found to be -i\jth of the total length; and its length is con- 

 tained ten times and three-quarters in the distance between the 

 muzzle and the anus, which terminates the fourth- seventh of the 

 total length. There are 3 pores on the snout, and 5 on each branch 

 of the mandible. The tube of the anterior nostril is double the 

 length of tlie eye. Beneath the tip of the muzzle, there appears a 

 double series of 3 teeth each. Vomerines, biserial at first, near the 

 end, uniserial. Palatine teeth uniserial. Mandibular teeth, bise- 

 rial at the symphysis. The dorsal begins at one-eighth of the total 

 length. 



Ground colour, yellowish-white, so sparingly dotted with brown 

 as merely to acquire a greyish or dusty appearance ; beneath the 

 lateral line, there is a pale bluish-grey longitudinal stripe. Abdo- 

 men, white; dorsal and anal fins, hyaline, the lower half of the 

 former dotted with brown. (Cantor.) 



Penang. 



Genus 19. CIRRHIMUR^NA, Eaup. 



Edge of the upper lip furnished with a great number of short 

 irregularly-formed mustache filaments. Head small, elongated, 

 compressed, and sharply pointed. Snout a little longer than the 

 pointed mandible. Fore nostril shortly tubular, situated on the 

 edge of the snout; the hinder one on the inner side of the lip. On 

 the circumference of the whole upper lip, there are about 17 short 

 mustache feelers. 



Pectoral fin, narrow and longish. Eye situated over the middle 

 of the jaws. Teeth very fine ; 2 rows on the palatine bones ; a 

 single series on the vomer and mandible. Low dorsal and anal tins, 

 which do not wholly surround the tail. 



65. CiRRHIMUBiENA CHINENSI8. 



A not very greatly- elongated form, in which the begiiming of the 

 dorsal and of the pectorals correspond, the latter having 9 rays. 



Colour, yellowish-brown, with fine dark points along the dorsal 

 fin. 



