l^i SYXGXATHID.E. 



Operculum with a distiuct longitudinal ridge, and a few faint radi- 

 ating lines beneath. Snout three-fifths as long as the entire head. 

 The length of the head is a little less than one-fifth of the total. 

 Origin of the dorsal fin considerably in advance of the vent, the 

 three anterior lings of its base belonging to the trunk. Vent nearer 

 to the end of the tail than to the gill-opening. Snout with'five or 

 six black cross bars beneath. 

 Tropical parts of the Atlantic. 



a. Male, 7| inches long. Antilles. Purchased of Hr. Brandt. 



b. Young. Caribbean Sea. From the Collection of the Zoological 



Societ}'. 



c. Male, 4| inches long. Old Calabar. Presented by Dr. J. A. 



Smith. 

 (/. Fine female specimen, 7 inches long. Gaboon. Purchased. 

 e-f. Females, 4| inches long. Egypt (??). Presented by Dr. J. E. 



Gray. — Types of D. acideatus. 



12. Doryichtliys brachyurus. 



Syngnathus brachyurus, Bleek. Verh. Bat. Gen. xxv. Trosk- p. IG, and 



Nat. Tyds. Ned. Ind. vii. p. 105. 

 polyacanthus, Bleek. Act. Soc. Sc. Indo-Neerl. Mcmado, p. 77 



(young). 

 Doryichtbys hasseltii, Kaup, Lophohr. p. 57. 



D. 36-37. Osseous rings 21-23 + 19-24. 



The edges of each ring terminate in spines, which are very dis- 

 tinct and prominent in young examples, but become obsolete with 

 age. Lateral line passing uninterrupted into the lower edge of the 

 tail. Operculum with a longitudinal ridge, and three or four other 

 radiating strife on its lower half. Snout not twice as long as the 

 remaining part of the head. Vent below, or somewhat behind, the 

 origin of the dorsal fin, nearer to the end of the tail than to the gill- 

 opening. 



East-Indian archipelago ; Pacific. 



a. Adult, one of the typical examples. East-Indian archipelago. 



From Dr. Bleekor's Collection. 

 h. Young, type of S. polyacanthus. Manado. From Dr. Bleekcr's 



Collection. 

 c. Many fine adult and half-grown examples. Polynesia. Purchased 



of Mr. Wright. 

 d-e. Adult male and female (6| inches). Aneiteum. Purchased 



of Mr. Cuming. 



13. Doryichthys manadensis. 



Syngnathus manadensis, Bleek. Act. Soc. Sc. Indo-Neerl. i. Manado, 

 p. 78. 



D. ca. 33. Osseous rings 22-|-25. 



Edges of the shields rough. Lateral line uninterrupted, passing 

 into the lowci*" edge of the tail. Operculum with several strong 



