406 



ON SOME NEW SPECIES OF AMERICAN AND AFRICAN FISHES. 



from front of dorsal fin. Head 4.2 in length to origin of caudal ; four well-developed 

 barbels. Greatest depth three times in length to origin caudal. 



Scales large, minutely granular, with few (5-8) and coarse radii, 4 — 22-3 — 2-3. Several 

 rows extend over the basal third of the caudal fin. Total length 4 inches 9 lines ; to origin 

 dorsal (oblique) 10.5 lines ; to origin anal 2 inches 9 lines. Lateral line little deflexed. 



Coloration. A broad, straight, dark brown band from end muzzle to origin caudal fin, 

 which is light and dark margined above. Above dark cinnamon brown, each scale sil- 

 vered ; below paler brown, each scale with a deep brown spot at base ; tip of dorsal fin 

 brown. 



The anterior tract of the alimentary canal falls a considerable distance short of the vent, 

 while the second flexure is produced to the anterior extremity of the abdominal cavity, 

 being slightly prolonged to one side. The distal portion is slender. Among the ingesta 

 were found remains of crustaceans. 



The natatory bladder extends to the posterior extremity of the abdominal cavity. 



Habitat. This species was procured by the African traveller, P. B. Duchaillu, in streams 

 and rivulets fifty to sixty miles north of the equator, and the same distance from the 

 ocean. 



Labeobarbus aureus, Cope. 



Pharyngeal bones without external angle, inferior limb from tooth scries a little shorter 

 than superior from other extremity of same; teeth 2.3.5 — 5.3.2. 



Scales 5 — 37 — 2, lateral line decurved, rising at front of anal fin. Rays D. II. 8. C. 

 +19-J-. A. II. 6. V. II. 9. P. 18. Second dorsal spine slender, terminal third articulated; 

 pectorals not reaching ventrals ; latter falling short of vent, having elongate scute in axilla, 

 and median plate below ; anal appressed, extending two-thirds distance to vent. Outline 

 arched from dorsal, muzzle depressed, projecting ; four well-developed barbels. Eye one 

 and two-fifths times in muzzle, four times in head ; latter 3.8 times to origin caudal. 

 Greatest depth 3.75 in same. Above, to second row above lateral line, brownish oliva- 

 ceous ; below this point and on sides of head, golden. 



Length to end caudal 9 inches ; to base of dorsal 3 inches 6 lines ; to origin anal 5 

 inches 5 lines. 



Habitat. Two specimens of this species were sent to the Academy by our correspondent, 

 Dr. Alden Grout, from the Umvoti Mission, near the boundary between Zulu Land and 

 Natal, South Africa. The species is nearest the L. mariquensis, Smith, of Central South 

 Africa. 



