194 SYNGNATniD.E, 



The mode of gestation of ova is not known in this fish ; but I 

 conclude, from its great affinity to Nerophis (of which it may be 

 considered an embryonic -form), that the ova are attached to the 

 abdomen, and not to the tail. 



Falkland Islands. 



1. Protocampus hymenolomus. 



Syngnathus hymenolomus, Riclianh. Voy. JErcb. ij- Ttrr. IcMh, 



p. 52, pi. 30.* figs. 11-13. 

 Nerophis hymenolomus, Kaup, Lophobr. p. 67 (cop. from Richards.). 



D. 40-41. Caudal fin very small, with eight rays. Vent behind 

 the middle of the dorsal fin, in the middle of the total length. 

 Snout rather longer than the remaining part of the head. Body 

 \ni\\ 29 or 30 semiossificd rings, compressed. The length of the 

 head is one-fifth of its distance from the vent. Body covered with 

 skin. 



Falkland Islands. 



n-d. Types of the species : females. Falkland .Islands. Presented 



by W. Wright, Esq. 

 e-f. Adult females. Australia ? From the Haslar Collection. 



Second Group. HIPPOCAMPINA. 

 Tail without caudal fin, prehensile. 



11. GASTROTOKEUS. 



Gasterotokeus, (Hecliel) Kaup, Lojyhobj; p. 18. 



Body depressed, the lateral line running along the margin of the 

 abdomen. Shields smooth. Tail shorter than the body, prehensile. 

 Pectoral fins. The males carry the eggs, which are imbedded in 

 soft membrane on the abdomen, without a pouch being formed by 

 a lateral expansion of the integuments. 



Indian Ocean to China and Australia. 



1. Gastrotokeus biaculeatus. 



Valent. Amb. iii. p. 500. no. 481 ; Rcnard, fig. 73. 



Svnguatlius bi culeatus, Bl. Ausl. Fisch. iv. p. 10, tab. 121. figs. 



■'l & 2 ; m. ISchn. p. 51.5, tab. 107 ; Cant. Mai. Fish. p. 387. 



tetragonus, L. Gm. i. p. 1453; Lacep. ii. p. 42. 



Sjngnathoidos blochii, Rlcek. Nat. Ti/ds. Ned. Ind. ii. p. 259. 

 Solegnathus blochii, Bleek. Verh. Bat. Gm. xxv. Trosk. p. 24. 

 Gasterotokeus biaculeatus, Kaup, Lophobr. p. 19. 



D. 40-45. r. 17-23. Osseous rings 18 + 45-55. 



Superciliary margin terminating behind in a more or less distinct 

 spine. Old individuals souictimcs with minute filaments on the 

 lower side of the head, body, and tail. Origin of the dorsal fin 

 nearly opposite to the vent. 



Indian Ocean to China and Australia. 



