6o 



Sy/igiialhits: mcnto Bleckcr, I.e. VIII. i860, ijde Bijdr. Visch- 



fauna Celebes, p. 13. 

 Bclonichthys (SyngttathusJ zambezensis Peters, Reise nach Mos- 



sambique, Zool. IV. Flussfische, 1868, p. 108. 

 Syngnathus metito Dumeril, Hist. nat. Poissons II. 1870, p. 571. 

 Belonichthys zambezensis Dumeril, ibid. p. 587 '). 

 Doryichthys mcnto Gtinther, Cat. Brit. Mus. VIII. 1870, p. 181. 

 Syngnathus (Bclottichthys) zambezensis Peters, Sitzber. Gesellsch. 



naturf. Frcunde Berlin, 1881, p. 108. 

 Syngnathus (Belonichthys) mcnto Peters, ibid. 

 Doryrhamphus tnento de Beaufort, Bijdr. Dierkunde ige Afl., 



Amsterdam, 191 3, p. 102. 

 Bclonichthys fnviatilis Duncker, Mitt. a. d. naturh. Mus. Hamburg, 



XXXII. 1915, p. 58. 



D. 64 — 70 ; A. 4; ?. 17— 20; C. 9; Rings 19 + 

 23 — 26; subdorsal rings ii — 12 + 4. 



Shields transversally, intermedial shields subra- 

 dially striated. Posterior rings of tail conspicuously 

 shorter than the preceding ones. Caudal equal to 

 or somewhat shorter than postorbital part of head. 

 Yellowish brown. Lower surface and operculum 

 silvery. For other characters see those of the genus. 

 Length 188 mm. [A specimen oi Syngnatluis mento 

 Blkr. of Bleeker's collection in the Leiden Museum 

 seen by us]. 



Habitat: Borneo (Sadong); Celebes (Menado, 

 in brackish water); Buru (Kajeli! in fresh water). — 

 Mossambique, Madagascar ? 



Fig. 25. 

 Bclonichthys 

 Jiitviatilis 

 (Ptr.s). X 2^/4- 



7. Choeroichthys Kaup. 



(Kaui', Cat. Lophobr. Fish, 1856, p. 55-). 



Small, short, dorsally and ventrally arched. Edges 

 of the shields finely serrated or granulated, those 

 of the head smooth. Rings of tail more numerous 

 than those of trunk. Superior cristae of trunk and 

 tail continuous, inferior cristae of trunk and tail 

 discontinuous, median cristae of trunk and inferior 



1) Duncker unites witli the present species also Hcmithylacus 

 Rocaberti A. Dameril, Hist. nat. Poissons II. 1870, p. 600, but the 

 measurements of this species, especially the length of the head 

 compared with that of the total length, differ essentially. 



2) In Kaui', Arch. f. Naturgesch. XIX. i. 1853, p. 233, appears 

 only the name Choeroichthys without description. 



