lOI 



elevated, gently continued in the long snout, which is com- 

 pressed and longer than remaining part of head ; a median keel 

 is wanting or not, when present, it is low, smooth or with slight 

 serrations, but never spinous. Front and orbits not prominent. 

 Cutaneous appendages may be present. Operculum with a keel, 

 which only is conspicuous at the base and curved upwards, its 

 convexity looking backwards. Superior and inferior cristae of 

 trunk and tnil discontinuous; median cristae of trunk and 

 inferior cristae of tail continuous. All the fins present. Dorsal 

 with its base not or only slightly elevated; its middle above 

 anus; caudal small. Eggs small, numerous, isolated in cutaneous 

 cells on tail and totally enclosed by a subcaudal brood-pouch 

 formed by lateral cutaneous folds beginning behind anus. 



Distribution: Marine fishes living along the coasts of 

 East Africa, Mauritius, Cargados Carajos Islands, British India, 

 Ceylon, Indo-australian Archipelago, China, Japan, Torres 

 Straits, Australia. 



I. Yozia bicoarctata (Blkr.) [Fig. 42, p. looj. 



Sy/ignathus bkoarctatus Bleeker, Act. Soc. Sc. Indo-Neerl. II. 1857, Sste Bijdr. 



vischfauna Amboina, p. 99. 

 Syngnathiis zanzibarensis (Uinther, in: Playfair & (ninther, Fishes of Zanzibar, 



1866, p. 140. 

 Syngnathus bicoaixtatiis Dumeril, Hist. nat. Poissons II. 1870, p. 569. 

 Syngnathus zanzibarensis Giinthev, Cat. Brit. Mus. VIII. 1870, p. 168. 

 Syngnathus bicoarctatiis Giinther, 1. c. p. 176. 



Yozia wakanourae Jordan & Snyder, Proc. U. S. Nat. Mus. Wash. XXIV. 1901, p. 8. 

 Yozia wakanourae Jordan, Tanaka & Snyder, Journ. Coll. Sci. Tokyo XXXIII. 



1913, p. 96. 

 Yozia bicoarctata Duncker, Mitt. a. d. natiirh. Mus. Hamburg XXXII. 1915, p. 107. 



D. 27 — 29; A. 4; p. 16— -17; C. 7 — 8; Rings 2 1 — 24+59 — 63; 

 subdorsal rings 34-3 — 4. 



Trunk heptagonal, slightly swollen between the 6th and 

 13th ring; tail tetragonal, about 2'/2 times as long as trunk. 

 Shields transversely striated, their edges rather obtuse, slightly 

 granular and crenulated or smooth; intermedial shields oval 

 or angular, granular. No cutaneous appendages. Head 10 — ^12 

 times in length, more or less than 2'/.^ times in trunk. Occiput 

 rough, somewhat prominent, without being raised into a ridge, 

 other ridges also wanting. Eye 6 — 7 times in head. Snout 

 slender, scarcely compressed ; its dorsal edge smooth, less than 

 twice the length of the postorbital part of the head, gently 



