SILUKID^TJ. I 



'JVvtli on tlie jialule reduced to Uvo small patches, if present. 



24. Helicoi-ii.igus, p. 64. 



*•'* Mandibular!/ barbels none ; nostrils open : the fosterior arc doser 

 together than the anterior, which are quite in front of the snout. 

 Adipcse fin present ; maxillary barbels minute. 



25. SlLONDI.4, p. 65. 



Third Subfamily. 



SILURIDiE ANOMALOPTER^. 



Dorsal and adipose fins very short, the former belonging to the 

 caudal vertebral column ; anal very long. Ventrals in front of 

 the dorsal. Gill-membranes entirely separate, overlapping the 

 isthmus. 



Group E. Hypophthalmina. 



The ventral fins are in front of the dorsal. 



a. The eye is small, situated above the level of the angle of the mouth. 

 Teeth in the jaws 26. Helogenes, p. 66. 



b. The eye is situated behind, and partly even below the level of, the angle of the 



mouth. 



Teeth none 27. Hypophthalmus, p. 67. 



Pourth Subfamily. 



SILURID^ PROTEROPTER^. 



Dorsal fin short, placed anteriorly on the trunk, in advance of 

 the ventrals ; adipose fin well developed, sometimes short ; anal 

 short, or of moderate length. GiU-membranes not confluent with 

 the skin of the isthmus, with free posterior margin. 



Group F. Bagrina. 



The anterior and posterior nostrils are remote from each other, and 

 the posterior is pro^-ided with a barbel. 



a. Teeth on the palate present : Old World. 



* Four mandibidary barbels. 



Dorsal with 9-10 soft rays, anal with less than 20 ; teeth on the palate con- 

 tinuous 28. Bagrus, p. 69. 



Dorsal with 6 soft ray.<, anal with less than 20 ; the teeth on the palate form two 

 groups 29. CuRYSicHTnvs, p. 70. 



Dorsal with (i soft rays, anal with less than 20 ; the teeth on the palate form four 

 groups 30. Clakotes, p. 73. 



Dorsal with 7 soft rays, anal with less than 20 ; teeth on the palate continuous ; 

 no moveable labial teeth ; orbital margin free. 



31. Mackones. p. 74. 



