188 SYNONATHID^. 



scales. AH the fins arc much developed, especially the caudal one. 

 The gill-opening is a longer slit than usual. Head oval, occipital 

 shield small, and a furrow commencing at the orhit accompanies the 

 rostral crest. Up to the anus there are twenty-seven body-rings, 

 twenty-four of them before the dorsal, which stands on nine rings, 

 three of them belonging to the body. The tail is four-cornered, 

 higher than it is broad, and composed of twenty-four long rings. 

 Colour yellowish brown, with a black cross band on each ring ; 

 ventral piece of the pectoral ring and the gill-cover silvery. 



Entire length 22 inches. Length of snout 1-97 inch, of head 

 and snout 2-76 inch, of dorsal fin 1-97 inch, of tail 9-46 inches. 

 Tlie middle ray of the caudal, though it is assuredly not entire, is 

 •091 inch long. (^Kaup.) 



King George's Sound. 



7. CCELONOTUS. 



Ccelonotus, Peters, Monatshr. Ak. Wiss. Berlin, 1855, p. 465. 

 Hemithylaciis, Kaup, Lo2)hohr. p. 01. 



Only the dorsal ridges are developed, the remainder of the body 

 and tail being smooth and rounded. Pectoral and caudal fins deve- 

 loped ; dorsal long, opposite to the vent. Males with the egg-pouch 

 on the abdomen. 



Indian Ocean, one species entering fresh waters. 



It appears from Kaup's observation, who examined male specimens, 

 that Prof. Peters was mistaken in supposing that the eggs of these 

 fishes are attached to the tail. They agree in this respect with 

 Neroplils, which genus offers suificieut proof that the length of the 

 tail is not indicative of the mode of gestation of the ova as Prof. Peters 

 believes (Flussfische von Mossamb. p. 106). 



1. Ccelonotus liaspis. 



Syngnathus leiaspis, Blcrk. Vcrh. Sat. Gen. xxv. Trosk. p. 20. 

 Ilemithylacus leiaspis, Kaup, Luphohr. p. 61. 



D. 53-55. Osseous rings 17-1-32 (25). 



The length of the head is contained thrice and a half in that of 

 the trunk. The length of the snout is equal to that of the post- 

 orbital portion of the head. Head without ridges ; body much com- 

 pressed, deeper than broad, only the dorsal ridges being prominent. 

 Tail longer than the body. Dorsal fin standing on twelve rings, four 

 of which belong to the body. Caudal fin rather small. 



Java. 



a. One of the typical specimens. From Dr. Bleeker's Collection. 



2. Ccelonotus bioceUatus. 



D. 48. Osseous rings 17-|-39. 



The length of the head is contained twice and two-thirds in that 

 of the trunk ; snout as long as the postorbital part of the head. 

 Head with very slight ridges above ; body slightly compressed. 



