MURjENIDJE. 75 



Teeth uniserial. About 16 dark bands 



encircle body, none being on the head . . 6. M. reticularis, p. 78. 

 Teeth uniserial. From 28 to 35 more or 



less complete dark bauds ; head with [p. 78. 



dark marks 7. M. jwnctatofasciata, 



Teeth uniserial. Dark spots on head, 



body, and fins, separated by narrow 



light lines or interspaces 8. M. tessellata, p. 78. 



Teeth uniserial. Olive-brown ; a few 



dark spots on head, and many irre- 

 gular spots on body and fins 9. M.fonbriata, p. 79. 



Teeth uniserial. Brown, covered with 



fine spots on head and body, amongst 



jwhich are reticulated yellow lines ; 



a black spot usually at the gill- [p. 79. 



opening , 10. M. pseudothyrsoidea, 



Teeth uniserial. Light brown, covered 



with irregular dark blotches and 



usually reticulated lines, most dis- 

 tinct in the posterior half of the 



body 11. M. undulata, p. 80. 



Teeth uniserial ; vomerine band bifur- 

 cated in front. Light brown, marbled 



with darker ; gill- open ing in a black 



spot; fins usually with a light outer [p. 80. 



edge 12. M. jlavimarginata, 



Teeth uniserial. Brownish black or 



blotched 13. M. afra, p. 80. 



b. Tail at least twice as long as trunk. 

 Teeth biserial. Uniform brown ; the fins 



nearly black 14. M . macriira, p. 81. 



B. Teeth in jaws pointed ; globular on 



vomer. 



Teeth biserial. Light brown, covered 

 with closely-set purplish spots and 

 light intermediate lines forming a 

 network ; anal fin sometimes with 

 a light outer edge 15. M, thyrsoidea, p. 81. 



Teeth in jaws uniserial. Grey, with ar- 

 borescent black markings and mar- 

 bling 16. M. picta, p. 82. 



C. Teeth generally obtuse or molariform. 



Tail one third of the total length. Brown, 



with from 30 to 100 narrow white 



or yellow rings 17. M. sebra, p. 82. 



Tail a little shorter than the trunk. 



Brown, with from 20 to 25 dark 



blotches along the side, with some 



white spots in the centre of each 18. M. nebulosa, p. 88. 



Tail one third longer than the trunk. 



Brown, with from 25 to 30 narrow, 



yellow, whole or half bands 19. M. polyzona, p. 83. 



Tail about as long as trunk. Black 20. M. nigra, p. 84 



