Operculum with a distinct 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 tho vent, the 

 three anterior rings 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 



Societj-. 

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

 Smith. 



d. Fine female specimen, 7 inches long. Gaboon. Purchased. 

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



Gray. — Types of D. aculeatus. 



12. Doryichthys brachyurus. 



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



Nat. Ti/ds. Ned. Itnl. vii. p. 105. 

 polyacauthus, Bleek. Act. Soc. Sc. Indo-Xeerl. Manado, p. 77 



(young). 

 Doryichthys hasseltii, Kaiip, Lophobr. 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 ■ndth 

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

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

 radiating stria3 on its lower half. Snout not twice as long as the 

 remaining part of the head. Ycnt 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. 



Fi'om Dr. Bleeker's Collection. 



b. Young, type of S. pnlyacanthus. Manado. From Dr. Bleeker's 



Collection. 



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



of Mr. Wright. 

 d-e. Adidt male and female (G^ inches). Aneiteum. Purchased 

 of Mr. Cuming. 



13. Doryichthys manadensis. 



Syngnatlius uiauadensis, Bleek. Act. Sue. Sclndo-Neerl. i. Manado, 

 p. 78. 



D. ca. 33. Osseous rings 22 + 25. 



Edges of the shields rough. Lateral line uninterrupted, passing 

 into the lower edge of the tail. Operculum with several strong 



