180 STNGNATHIDJB. 



A. Lateral line intefTtipted. 

 a. Dorsal Jin with more than sixty rays. 



1. Doryichthys heterosoma. 



Syngnatliiis heterosoma, Bleek. Nat. Tyds. Ned. Ind. ii. p. 440; or 

 I'erh. Bat. Gen. xxv. Trosk. p. 15. 



D. 65-68. Osseous rings 26 + 31-38. 



The edge of each ring terminating in a spine. Lateral line inter- 

 rupted. Operculum with a longitudinal ridge. Snout more than 

 twice as long as the remaining part of the head. Vent below the 

 second third of the base of the dorsal fin, behind the middle of the 

 total length. 



Borneo. 



a. Male, one of the typical examples. From Dr. Bleeker's Col- 



lection. 



b. Adult female. Eeceived from Dr. Blocker with the erroneous 



name of Microphis boaja. 



b. Dorsal Jin with less than sixty rays. 



2. Doryichthys boaja. 



Syngiiathus boaja, Bleek. Nat. Tyds. Ned. Ind. i. p. IG; or Verh, 



Bat. Gen. xxv. Trosk. p. 14. 

 Doryichthys spiuosus, Kattp, Lophohr. p. 57. 



D. 49-50. Osseous rings 24 + 33-38. 



The edge of each ring terminating in a sjnne. Lateral line inter- 

 rupted. Operculum with a longitudinal ridge. Snout not twice as 

 long as the remaining part of the head. Vent below the end of the 

 anterior fourth of the dorsal fin, behind the middle of the total 

 length. 



Sumatra ; Siam ; Borneo ; China. 



a. Adult. Sumatra, 



6. Half-grown. Siam. From Mouhot's Collection. 



c. Adult. Borneo. 



d. Adult. China. Presented by Sir J. Eichardson. 



3. Doryichthys deokhatoides. 



Syngnathus deokhatoides, Bleek. Ver. Bat. Gen. xxv. Irosk. p. 17 ; 

 or Nat. Tyds. Ned. Ind. vii. p. 106. 



D. 33-37. Osseous rings 20-22 + 31-35. 



Edges of the shields rough, without spines. Lateral line inter- 

 rupted. Operculum with a longitudinal ridge. Length of the snout 

 equal to the distance of the anterior margin of the eye from the end 

 of the pectoral fin. Origin of the dorsal fin slightly in advance of 

 the vent, which is a little nearer to the end of the snout than to 

 that of the caudal fin. 



Sumatra and Borneo. 



