46 LOPHOBRANCHII. 



pouch TS5 inch. These have 18 rings before the dorsal fin. 

 whose length rather exceeds that of the snout and head to- 

 gether ; their colour is reddish-brown with lighter and darker 

 specks. 



22. Syngnathus Schlegeli, Kp. 

 Syngnathus tenuirostris, Temm. et Schleg. F. Japon. t. 120. f. 5. 



Diagn. — Snout elongated and very slender, equal in length 

 to the distance between the fore border of the orbit and the 

 base of the pectoral fin. Length of the dorsal fin fifty 

 times its height and twice the length of the snout. 



Descr. of the original specimen belonging to the Leyden Mu- 

 seum. — Head more lengthened and not so high as that of Acus. 

 There are 18 rings before the dorsal fin, which stands on 9 rings, 

 and is supported by 35 rays. The roof-shaped scales lying over 

 the egg-pouch are more developed than in Acus. Colour brown- 

 ish-grey, with darker specks on the tail. The dorsal translucent, 

 and bluish without spots. I have seen dried Chinese examples 

 of this species. 



Of the Syngnathus sundaicus and S. djarong of Bleeker I 

 have seen no specimens, and am unable to describe them with 

 sufficient accuracy merely from plates. S. djarong is perhaps 

 the argyrostictus of Kuhl and Van Hasselt. 



Genus 6. LEPTONOTUS, Kp. 



Diagn. — In the females the body is laterally much compressed, 

 the back veiy narrow, and the belly acute. The dorsal 

 profile rises suddenly behind the pectoral fin. 



Descr. — The female has a knife-like acuteness of the back, 

 and in advanced age the height of the body is five times its 

 breadth ; but in the young it is merely from one and a half to 

 three times the breadth. The tail is nearly twice the length of 

 the body. 



1. Leptonotus Blainvillii, Kp. 



Syngnathus Blainvillianus, Eydoux et Gerv. in Guerin, Mag. 

 Zool. iv. 1. 16. 



Diagn. — Lateral line uniting by an arch with the upper edge 

 of the tail. Body-rings 19. Tail-rings 50. Dorsal fin 

 standing on 10 rings, of which two belong to the body. 



