70 



Tail more or less than twice as long as trunk. Dorsal situated 

 totally or nearly totally on the anterior caudal rings, with 

 20 34 rays. Anal, pectorals and caudal present. Eggs small, 

 numerous, incompletely isolated in cutaneous cells on the lower 

 surface of the tail, laterally protected by low diverging cuta- 

 neous folds. 



Distribution: Marine fishes living on coral reefs and 

 near the shore in the indo-pacific region and on the east coast 

 of central and tropical South America. 



Key to the i nd o-australian species of 

 Corythoichthys. 



A. Length of snout about equal to half length of head. 



1. All the edges on head, body and operculum smooth; 

 or those of the body only slightly corrugated, even 



in young specimens C. fasciatus p. 70. 



2. All the edges on head, body and operculum sharply 



serrated; the fish therefore strongly adhering C. cretmlatus p. 72. 



B. Length of snout much less than half length of head. 



i. All the edges on head, body and operculum corru- 

 gated or slightly serrated, the fish not adhering . . . C. corrtigatus p. 73. 



i. Corythoichthys fasciatus (Gray). [Fig. 31, p. 71], 



Syngnathus fasciatus Gray, Illustr. Ind. Zool. I. 1830 1832, pi. 89, fig. 2 and 



2a (nee Risso, 1810). 



Syngnathus flavofasciattts Riippel, Neue Wirbelthiere, Fische, 1840, p. 144. 

 Syngnathus haematopterus Bleeker, Nat. Tijdschr. Ned. Ind. II. 1851, p. 258. 



Verb. Batav. Genootsch. XXV. 1853, Bijdr. Troskieuwige Visschen, p. 20. 

 Syngnathus fasciatus Peters, Monatsber. Akad. Berlin 1855, p. 465. Arch, f, 



Naturgesch. XXI. i. 1855, p. 277. 



Corythoichthys fasciatus Kaup, Cat. Lophobr. Fish, 1856, p. 25. 

 Syngnathus fasciatus Dumeril, Hist. nat. Poissons II. 1870, p. 543 (p. p.). 

 Syngnathus conspicillatus Gunther, Cat. Brit. Mus. VIII. 1870, p. 174 (p.p. 



nee JENYNS). 

 Syngnathus flavofasciattis Klunzinger, Abhandl. zool.-bot. Gesellsch. Wien XXI. 



1871, p. 649. 

 Syngnathus conspicillatus Bleeker, Arch, neerl. sc. nat. XIII. 1878, p. 49 



(nee JENYNS). 



Ichthyocampus papuensis Sauvage, Bull. Soc. philom. (7) IV. 1880, p. 228. 

 Syngnathus conspicillatus Lunel, Me"tn. Soc. phys. sc. nat. Geneve XXVII. 1881, 



p. 291 (nee JENYNS). 



Syngnathus intesti?ialis Ramsay, Proc. Linn. Soc. N.S. Wales, 1881, p. 494. 

 Syngnathus conspicillatiis Day, Fishes of India, 1878 1888, p. 808 (nee JENYNS). 

 Corythroichthys isigakius Jordan Snyder, Proc. U, S. Nat. Mus. XXIV. 1901, p. 7. 



