147 



A. 11-13. Upper surface of the head 

 almost smooth. Occipital process 

 very narrow, a long 1 interspace be- 

 tween it and basal bone. Brown, 

 with some black spots along the 

 sides 



A. 11-13. Upper surface of the head 

 roughened. Occipital process short, 

 with a long interspace between it 

 and the basal bone. Brown with 

 some black spots along the sides . . 



A. 12. Occipital process short, with a 

 long interspace between it and the 

 basal bone. Dorsal spine smooth, 

 weak, articulated in its .upper three 

 fourths 



A. 1 1-13. Occipital process reaches 

 basal bone. Maxillary barbels reach 

 caudal tin. Adipose dorsal long, 

 commencing just behind the rayed 

 fin. Dorsal spine entire. Silvery, 

 often with a olack spot at base of 

 dorsal spine, and fins stained with 

 dark 9. 



A. 11-13. Median groove on head 

 reaches base of occipital process, 

 which latter reaches the basal bone. 

 Golden, with a black shoulder-spot 

 and about five longitudinal dark 

 bands 10. 



A. 11-13. Eye 3 to 3 in length of 

 head ; occipital process reaches basal 

 bone. Maxillary barbels reach 

 middle of anal fin. Base of adipose 

 dorsal as long as that of the rayed 

 fin. Dark spot anteriorly at base of 

 dorsal fin- ' 11. 



A. 9-12. Median groove on head does 

 not reach the base of the occipital 

 process, which latter reaches the 

 basal bone 12. 



A. 11-12. Maxillary barbels reach anal 

 fin. Purplish black, with some 

 white spots 



A. 12. Head 5 in the total length. 

 Median groove on head does not 

 reach occipital process, which last 

 extends to the basal bone. Mexil- 

 lary barbels reach anal fin. A dark 

 shoulder-mark, a light band along 

 the body, and dark spot at base of 

 caudal 



A. 9-10. Head 4 in the total length. 

 Median groove on head does not 

 micli occipital process, which last 

 does not quite reach the basal bone. 



M. punctatus, p. 153. 



7. M. cwsula, p. 153. 



8. M. rmcrophlhalmtig, p. 154. 



M. crn-nsius, p. 155. 

 M. tengara, p. 156. 



M. oculatus, p. 156. 



M. vtt-tatus, p. 157. 

 M. Iciicophasis, p. 168. 



ia 



14. M. montamis, p. 159. 



L2 



