82 SYNGNATHID.E. 



Si/no2>sis of the Genera. 



I. Tail not much longer, or even shorter, than head and hoJj'. 

 Greater part of dorsal fin on trunk; dorso-lateral edge 



of trunk not continuous with that of tail ; male [p. ^>2. 



carrying the eggs on the belly 1- Belonkhtht/s, Peters, 



Greater pai-t of dorsal fin on tail ; dorso-lateral edge of 



trunk not continuous v\itli that of tail ; male carry- [p. 83. 



ing the eggs on the belly 2. Dorijicldhjs, Kaup, 



II. Tail much longer than head and body. 



Greater part of dorsal fin on tail ; dorso-lateral edge of 



trunk continuous with that of tail ; male carrying [p. 84. 



the eggs on the belly 3. Ca-lonotus, Peters, 



Whole or greater part of dorsal fin on tail ; dorso-lateral 



edge of trunk not continuous with that of tail ; [p. 86. 



male carrying the eggs in a subcaudal pouch . . 4. Syngnatlius, Art., 



1. BELONICHTHYS. 



Peters, Reise Mossamb. iv. p. 108 (18G8) ; A. Dum. Hist. Poiss. ii.p. 58G (1870) ; 



Duncker, Mitth. Nat. Mus. Hamb. xxix. 1912, p. 230. 

 ] )orijiclit]iys, part., Giiuth. Cat. Fish, viii. p. 179 (1870). 



Body slender, much elongate, with strong ridges, the dorso-lateral 

 edge of the trunk not continuous with that of the tail. Dorsal fin 

 principally on the trunk ; anal rudimentary. Pectoral and caudal fins 

 ])resent. Brood-pouch of the male occupying the whole belly, not 

 completely covering the eggs. 



Brackish and fresh waters of East Africa and the Malay Archipelago. 



1. BELONICHTHYS ZAMBESENSIS. 

 Syngnatlius fluviatilis (non K. & v. H.), Peters, Mon. Berl. Ac. 1852, p. G85. 

 Si/ngnatlnis zanihezensis, Peters, Mon. Berl. Ac. 1855, p. 4G5. 

 Beloniclilliys zanihezensis, Peters, Reise Mossamb. iv. p. 109, pi. xx. fig. 5 (1868) ; 



A. Dum. Hist. Poiss. ii. p. 587 (1870). 

 Dory'iclithys viento, part., Giinth. Cat. Pish. viii. p. 181 (1870). 



Head and body ^, or a little less than ^, of total length ; bony rings 

 20-|-18-24, without spines ; lateral line and lower caudal ridge con- 

 tinuous. Snout nearly as long as postocular part of head ; operculum 

 with granulate radiating ridges. Dorsal 66-69, on 15 rings, the last 4 

 of which belong to the tail. Anal 4. Pectoral and caudal fins well 



