26 FISH AND FISH-ilKE ANIMALS OF N.S.W., 



89b. F. depressa. Deep-sea Flute-mouth. Id. Gtbr., Chall. Zool. i, 1880, 



p. 69, pi. 32, d— snout. 

 Restricted to deeper water. Colour pinkish. 



LIV. Family Macrorhamphosidae. 



90. Macrorhamphosus Laeep., H. N. Poiss. v, 1803, p. 13(3 (cornutus). 



A. Depth more than half the head-length; dorsal spine over or a little before ths 

 ven t elevatus (90a). 



AA Depth less than half the head-length; dorsal spine well before the vent. 



gracilis (90b). 



90a. M. elevatus. Bellows Fish. M. scolopax var. elevatus Waite, Mein. 



Austr. Mus. iv. 1, 1899, p. 59, pi. 7.1. (PI. ix). 

 Plentiful in deep water and very variable in proportional details. Length 

 5i inches. 



90b. M. gracilis. Little Bellows Fish. Centrhscus gracilis Lowe, 



P.Z.8. 1839, p. 80. M. gracilis Waite, Mem. Austr. Mus. iv. 1. 1899, 



p. 01, pi. 7, 2. 

 Widely distributed. Length 4 inches. 



LV. Family Syngnathidae. 



A. Caudal fin present though sometimes rudimentary. 

 B. Pectoral fin present. 



C- Dorsal fin opposite or near the vent. 



D. Dorsal edges of trunk and tail not continuous. 



E. Operculum crossed by a horizontal ridge. Corythoichthys (911 

 EE. Operculum without a horizontal ridge except anteriorly. 



Syngnathus (92). 



DD. Dorsal edges of trunk and tail continuous. Ichthyocampus (93). 



CC. Dorsal fin far behind the vent. Urocampus (94 1. 



BB. No pectoral fins- Nannocampus (95). 



AA. No caudal fin. 



F. Body broader than deep. 



' G. Tail longer than head and trunk; snout slender. Stigmatopora (96 1. 



GG. Tail shorter than head and trunk; snout broad. Syngnathoides (97). 

 FF. Body deeper than broad. 



H. Dorsal largely or entirely behind the vent; axis of head at an oblique 

 angle to that of body. 



I. Shields of head, body, and tail with elongate processes bearing leaf- 



like appendages. Phyllopteryx (98). 



II. Shields without such processes, prickly. Solegnatlnts (99). 

 HH. Dorsal largely before the vent; axis of head more or less at a right 



angle to that of the body. Hippocampus (100). 



91. Corythoichthys Kaup. Arch. Naturg. xix. i. 1853, p. 231 (albirostris) . 



Perhaps synonymous with Hippichthys Bleeker. 

 A. Snout shorter than postorbital portion of head. parviceps Ola ) . 



AA. Snout longer than postorbital portion of head. 



B. Dorsal entirely behind the vent. allirostris (91b I. 



BB. Vent below anterior portion of dorsal- margaritifer (91c i . 



91a. C. paeviceps. Syngnathus parviceps Ramsay and Ogilby, P.L.S.N.S.W. 

 (2) i, 1886, p. 475. 



91b. C. altieostris. Syngnathus altirostris Ogilby, Rec. Austr. Mus. i, 

 1890, p. 55. 



