CLAEIAS. 



265 



fontanelle oval or sole-shaped, about twice as long as broad ; occipital 

 fontanelle smaller, in advance of occipital process ; eye small, its 

 diameter 2| to 3 times in length of snout, 4 to 5| times in interorbital 

 width, which equals width of mouth and f length of head ; band of 

 prse maxillary teeth 4 times as long as broad ; vomerine teeth conical, 



Fig. 220. 



Clarias sulce. 

 Type (P. Z. S. 1907). 



forming a crescentic band which is nearly as broad as the praemaxiilary 

 band ; nasal barbel § length of head ; maxillary barbel a little longer 

 than head, reaching end of pectoral ; inner mandibular barbel f length 

 of head, nearly § length of outer. Gill-rakers few, 8 to 10 on first arch. 

 Clavicles distinct under the thin skin, striated. Dorsal 89-93, its 

 distance from occipital process f to § length of head. Anal 70-78. 

 Dorsal and anal connected with base of caudal by a narrow membrane. 

 Pectoral ^ length of head, the spine strongly serrated on both sides, f 

 the length of the fin. Veutrals nearly twice as far from caudal as 

 from end of snout. Caudal f length of head. Blackish brown or dark 

 green above, with or without small yellowish spots. 



Total length 360 millim. Reaches to 435 millim. 



Liberia. — Types in Leyden Museum. 

 1-2. Two of the types. Liberia. Dr. Biittikofer (C). 



