240 RCOJrBRESOCID.T;. 



than broad, pro\-idcd with a vcr}' sHght lateral keel. Tlie lenj^th of 

 the head is one-third of the total (withont caudal) ; its upper sur- 

 face M'ith a broad and very shallow median groove ; superciliary 

 region striated ; base of the intermaxillaries depressed, maxillary 

 nearly entirely hidden by the praeorbital. Teeth strong ; vomerine 

 teeth none. The diameter of the eye is less than the width of the 

 interorbital space, and one-half of ilie length of the postorhital por- 

 tion of the head. Body siibcylindrical, its depth being much less 

 than the length of the pectoral fin, which eqiuils the distance of the 

 opercular margin from the oi'bit. Tone/ue covered with tiiberadar 

 asperities. Ventral fin nearer to the head than to the root of the cau- 

 dal. The middle and hinder dorsal rays are very slender and some- 

 what prolonged, the last extending nearly or quite to the root of the 

 caudal. Caudal fin forked. Scales very thin and small, deciduous. 

 Eastern coasts of Africa. 



a. Adult. Mozambique. From the Berlin Museum. 



b. Half-grown : skin. Zanzibar. Presented by Lieutenant-Colonel 



Playfair. 

 e. Large specimen. Purchased of Mr. E. Gerrard, jun. 



13. Belone annulata. 



Susuvll, pi. 175. 



PBeloua iudica, Lesneur, Journ. Acad. Nat. Sc. Philad. ii. 1821, p. 131. 



Belone anmdata, Cuv. Sj- Val. xviii. p. 447, pi. 550; C'cmt. Mai. Fish. 



p. 244 ; Day, Fish. Malabar, p. 165. 

 Belone gigantea, Schli-t/. Faun. Japon. Poiss. p. 245 ; Blcch. Act. Soc. 



Sc. Indo-Nedcrl. iii. Japan, p. 21. 



? melaniu'us, Bleck. ]'erhaml. Batar. Genootsch. xxii. Madur. p. 11. 



P cylindrica, 2?/ee/i:, Verhand. Batav. Genootsch. xxiv. Snoek. p. 13. 



Belone brachyrhynclius, Bleeh.Nat. Tijdsclir. Ace?. /?jc/. vi. p. 61 (young). 

 Mastacembelus choram, Bleek. Nederl. Tydschr. Dierk. iii. 

 brachyrhynclius, Bleek. I. c. (young). 



D. 23-24. A. 21-22. 



The free portion of the tail is tetrahedral, higher than broad, with 

 a slight, narrow longitudinal keel along the side. The length of the 

 head is contained thrice and a third in the total (without caudal) ; 

 its upper surface with a broad and very shallow median groove ; 

 superciliary region striated ; base of the intermaxillaries depressed, 

 maxillary nearly entirely hidden by the praeorbital. Teeth strong ; 

 vomerine teeth none. The diameter of the eye is two-thirds of the 

 width of the interorbital space, and tivo-Jifths of the length of the 

 postorbital portion of the head. Body sHghtly compressed, its depth 

 being much less than the length of the pectoral fin, which is more 

 than the distance of the opercular margin from the orbit. Tongue 

 covered ivith tidiercidar asperities. Ventral fin midway between the 

 front margin of the eye and the root of the caudal. The middle and 

 hinder dorsal rays are very slender and somewhat prolonged, the 

 last extending nearly or quite to the root of the caudal. Caudal 

 fin forked. Scales very thin and minute, deciduous. 



Indian Ocean. Friendly Islands. 

 a-c. Adult and young : skins. Pinang. From Dr. Cantor's Collection. 



