538 



Atinah <if tin' Son/// African Museum. 



These specimens are small in comparison with the type from which 

 the species is described, but they appear to belong to this species. 



P. spekii is also reported from Lake Victoria and the Victoria Nile, 

 and Lake Albert, Edward. 



3. PELMATOCHROMIS ROBUSTUS, n. sp. 



Teeth, an outer row of short, conical teeth on each jaw, about 50 on 

 upper jaw, followed by a similar row of smaller ones, with a few 

 detached teeth behind them. Depth of body 2f times in total length 



FIG. 151.. Pelmatochromis robustus. Type. o. 



excluding caudal, length of head :i times. Head 1 T 7 Q times as long as 

 broad, with a rounded profile, concave before the eyes ; snout rounded, 

 with slightly concave upper profile, as long as broad, | length of 

 postocular part of head ; eye 6 times in length of head, nearly twice in 

 interorbital width, a little loss than least depth of preorbital ; mouth 

 oblique, | width of head, extending nearly to vertical of anterior 

 border of eve ; 6 series of scales on cheek, depth of scaly pai't 1| 

 times diameter of eye. Gill-rakers short, thick, anvil- shaped at the 

 angle, 11 on lower part of anterior arch. 



Dorsal xvi 13 ; spines increasing in length to the last, which is 

 length of head ; longest soft rays nearly f length of head. Pectoral 

 T 7 o- length of head, reaching to vent. Ventral reaching to vent. Anal 

 iii 10 ; 3rd spine f length of longest dorsal spine, Caudal (broken in 



