87 



One specimen , total leu<^th 22 cm , leugth without caudal 

 17,5 cm. 



Sijnodontis greshojfii 

 D 1/7; A U; P 1/8. 



The gill-openiuf]f does not extend downwards beyond the root 

 of the pectorals. Mandibulary teeth much shorter than the eye. 



Height of the body one-fifth of the total length, length of 

 the head the same. The superior processes of the nuchal carapaee 

 rounded at their extremity, not yet reaching the second soft dorsal 

 finray ; humeral process with sharp iuferior edge , pointed , extending 

 backwards a little beyond the second soft ray of the dorsal. Length 

 of the snout a little less than half the length of the head , 

 diameter of the eye one-fourth of the length of the head and 

 two-thirds of the interorbital space, which is a little concave. 

 Maxillary barbels not fringed, extending beyond the extremity of 

 the pectoral spine , a little more than half the length of the body. 

 Mandibulary barbels with rather slender fringes. Mandibulary teeth 

 more than 45- Pectoral spine very strong, serrated along both 

 edges, a little longer than the head, and as long as the dorsal 

 spine; the latter feebly serrated behind, nearly smooth in front, 

 with only a few obsolete denticulations towards its point. Ventrals 

 reaching the third anal ray. Distance between base of inner 

 ventral ray and anal a little more than half the distance between 

 base of inner pectoral and outer ventral ray. Adipose fin as long 

 as the head, distance between adipose and dorsal a little less than 

 the base of the latter. Caudal deeply forked. Brownish (in spirits), 

 marbled with black. 



One specimen, total length (with caudal) 16 cm. Length of the 

 body until the base of the outer caudal finrays 12 cm. 



Synodontis angelica 

 D 1/7; A 12; P 1/8. 



The gill-opening does not extend downwards beyond the root 



of the pectorals. Mandibulary teeth much shorter than the eye. 



Height of the body one-fifth of the total length, length of the 



