PLECODUS. 



003 



40. PLECODUS. 



Boulcng. Tr. Zool. Soo. xv. 189.S, p. 22, und Poiss. Bass. Congo, p. 488 (1901) ; 

 Pellegr. Mem. Soc. Zool. Fn.ncc, xvi. 1904, p. 3()2. 

 Body elongate, covered with small cycloid scales ; two lateral lines, 

 the upper nearly complete. Teeth in a single series, large and few, 

 nneqnal in size, compressed, lamellar and a little concave in front, truncate 

 and strongly curved backwards; maxillary exposed. Dorsal with 18 

 to 20 spines, anal with 3. Parietal and occi[)ital crests very strong, 

 extending to between the orbits. Vertebrae 38 (18 + 20). 



Lake Tanganyika. 



Fi<?. 349. 



J'hcodia^ j>(i)'((dv.ias. 

 Niamkolo, -?. Head and dentition of typo-specinion, enlarged. 



1. PLECODUS PARADOXUS. 

 Bouleng. 11. cc, and Ann. Mns. Clongo, Zool. i. p. \')2, j)i. lii. tig. 4 (1900); 



Pellegr. 1. c. ; Bculcng. Tr. Zool. Soc. xvii. 190(;, p. ■")74. 

 riecoihiR hl)„anthifi(s, Stfiiul. An/.. Ak. Wion, \'M)[). p. 120. 



Depth of body nearly equal to length of head, ?>}. to 1 times in total 

 length. Head twice as long as broad ; snout bronder tliau brng and 



