TETEODOX. 



145 



2. TETRODON MBU. 

 Bouleng. Ann. Mus. Congo, Zool. i. p. 5G, pi. xxix. (1899), Poiss. Bass. Congo, 

 p. 503 (1901), and Ann. Mus. Congo, Zool. ii. pi. xv. fig. 5 (1902). 



Head as long as broad or a little longer than broad, its length 3 to 

 3^ times in total length. Snout rounded, ^ or | length of head ; inter- 

 orbital region feebly convex, 1^ to 2 times in length of head ; eye 

 lateral, 4 (young) to 9 times in length of head ; no nostril, but two 

 nasal tentacles on each side, measuring J to § diameter of eye. Dorsal 

 rounded, 11-12. Anal rounded, 10-11, opposite dorsal. Pectoral 

 rounded-subtruncate, § to \ length of head. Caudal rounded, as long as 

 or longer than head. Caudal peduncle \ to § length of head, about 

 twice as long as deep. Head and body with minute spines, except 

 on snout and on sides and lower surface of caudal region ; lateral-line 



Fig. 98. 





W&&~i& 



Tetrodon mbu. 

 Type (A. M. C). 



i 



4- 



system represented by very distinct furrows. Brownish above, with large 

 black spots or marblings (young), or with black vermicular lines forming 

 a handsome pattern ; young with one or two black longitudinal bands 

 on each side of the caudal peduncle ; lower parts uniform yellow or 

 orange ; fins unspotted, or caudal with black longitudinal streaks. 



Total length 670 millim. 



Congo. — Types in Congo Museum, Tervucren. 



1,2. Types. 



3. Yg., type. 



4. Ad. 

 5-b\ Hgr. 

 7. Skel. . 

 8-9. Hgr.&y; 



VOL. IV. 



Umangi, Upper Congo. 

 Monsembe, „ 



Stanley Falls, Upper Congo. 

 Upper Congo. 



55 



Sankuru It. at Koinlue, Kas: 



Capt. Wilverth (C.j. 

 Rev. J. H. Weeks (P.). 

 Dr. C. Christy (C). 

 Brussels University. 

 Rev. G. Grenfell (P.). 

 M. E. Lnja (C.) ; Luxem- 

 burg Museum (P.). 

 L 



