38 00J3IID.E. 



length of head. Caudal peduncle 1| times as long as deep. Scales 

 ciliated, 30-35 in longitudinal series, 8-9 in transverse series hetween 

 dorsal and anal. Olive, darker on the back, fins purplish ; a dark 

 curved purple line on each side of the head, from the angle of the mouth 

 to the upper border of the gill-cover ; a more or less distinct, yellowish, 

 dark-edged spot on the base of the pectoral ; anal with a black longi- 

 tudinal streak ; a series of light spots may be present on the dorsals ; 

 caudal with or without small light spots. 



Total length 135 millim. 



Portuguese Guinea to Lower Niger. — Type in Leyden Museum. 



1-2. Hgr. Bissau, Portuguese Guinea. Dr. W. J. Ansorge (C). 



3-4. Hgr. Lagos. J. Cadman, Esq. (P.). 



5. Ad. Gold Coast (?). Mrs. Burton (P.). 



6-10. Hgr. Degama, Lower Niger. Dr. W. J. Ansorge (C). 



11-12. Hgr. Agberi, 



19. GOBIUS HILGENDORFI. 

 Pfefr. Thierw. O.-Afr., Fische, p. 5 (1896). 



Depth of body 4-j to 5^ times in total length, length of head 3|- 

 to 3| times. Snout 1^ times diameter of eye, upper profile strongly 

 curved ; interorbital region narrow with strong ridges ; lower jaw slightly 

 projecting beyond upper, which extends to below centre of eye ; 3 series 

 of teeth ; no canines. Dorsals VI, I 11 ; third and fourth rays of first 

 dorsal much produced, extending to beyond middle of second dorsal. 

 Anal I 9. Caudal pointed, 1§ times as long as head. Scales ciliated, 

 48-52 in longitudinal series, 13 in transverse series. Almost colourless, 

 except a triangular purplish-brown spot below the eye, its point on the 

 extremity of the upper jaw; a dark longitudinal streak on the first 

 dorsal. 



Total length 115 millim. 



Kingani River, East Africa. — Types in Hamburg Museum. 



20. GOBIUS POLYZONA. 

 Bleek. Arch. Neerl. ii. 1867, p. 413, and Poiss. Madag. p. 55, pi. xvii. fig. 1 

 (1875) ; Sauv. Hist. Madag., Poiss. p. 370, pi. xl. fig. 3 (1891). 



Body strongly compressed ; depth of body 5 times in total length, 

 length of head 4 times. Head twice as long as broad, naked ; snout 

 rounded, as long as eye, which is nearly 5 times in length of head : 



