10. SICYDIUM. 93 



with darker; the second dorsal with four or five series of broWn 

 dots ; anal with a blackish and white margin ; caudal blackish, 

 superiorly and inferiorly white-edged. 

 Rivers of lie de France and Bourbon. 



3. Sicydium laticeps. 

 Cuv. ^ Val. xii. p. 177. 



The scales on the neck and belly are nearly as large as the others ; 

 the head is one-third broader than high. The thii'd and fourth 

 dorsal spines elongate, filiform. Uniform blackish; caudal with 

 whitish margins. ( Val.) 



Rivers of Bourbon. 



4. Sicydium stimpsoni. 



Gill in Proc. Acad. Nat. Sc. Philad. 1860, p. 101. 

 D. 6 I 11. A. 11. 

 The head is as broad as high. The second dorsal spine filiform. 

 Pmijlish, with seven darker cross-bands ; caudal fin and base of the 

 dorsal and anal white-dotted. {QUI.) 

 Rivers of Hilo Hawaii. 



5. Sicydium xanthurum. 



Sleeker, Sumatra, ii. p. 271. 



B. 6 I ^. A. ^. L. lat. 50. 



The scales on the neck and on the sides are nearly equal in size 

 to those on the tail. The anterior dorsal higher than the body. 

 Blackish : tail orange- coloured posteriorly ; dorsal and anal fins 

 brown ; caudal yellow, with a horseshoe-like black mark and with 

 the angles violet ; pectoral yollow-edged. The width of the eye 

 equals that of the interorbital space. (BZ.) 



Rivers of West Sumatra and Bali. 



6. Sicydium micrurum. 



Bleehei; Amhoina, iv. p. 341. 



D. 6|^. A.^. L. lat. 55-60. 



The length of the caudal fin is six times or six times and a half 

 in the total. The width of the interorbital space is much more than 

 that of the orbit. Scales on the neck, body and tail nearly equal in 

 size. The anterior dorsal fin is not higher than the body. Greenish 

 above, with about eight blackish cross-bars ; a blackish band along 

 the side, most distinct on the base of the caudal and on its middle 

 rays. Dorsal and anal fins immaculate, the latter with a blackish 



