352 CHARACINID-E. 



3. Hydrocyon lineatus. 

 Hydrocyon lineatus (^Schleg.), Bleek. Poiss. Cote de Guin. p. 125. 

 D. 10. A. 15. V. 10. L. lat. 44-46. L. transv. 8/5. 

 Similar to the preceding two species, but with a comparatively 

 longer head. 



The height of the body is contained four times in the total length 

 (without caudal), the length of the head thrice and three-foiurths 

 or four times. There are two series of scales between the lateral line 

 and the elongate scale at the root of the ventral fin. The upper jaw 

 with six teeth on each side, the lower with five. Silvery ; each series 

 of scales above the lateral line and the nearest below with a black 

 longitudinal streak. 



East and West Africa. 

 a-b. Skins, 15 and "I inches long. Unguezi, River Shire. Presented 



by Dr. Kirk and Ch. Livingstone, Esq. 

 c. Adult. "West Africa. Purchased of Mr. Dalton. 



36. SARCODACES. 



Xiphorhamphus, sp., 3fiUl. 6i- 2'rosch. 



Dorsal fin placed behind the middle of the length of the body, 

 between veutrals and anal ; anal rather short. Head and body elon- 

 gate, covered with scales of moderate size. Belly rounded. Cleft 

 of the mouth very wide ; teeth conical, in a single series in the in- 

 termaxillary and maxiUary, larger canines being mixed with smaller 

 teeth ; there is a series of smaU teeth on each side of the palate, but 

 they are implanted on a process of the intermaxillary bone, which 

 extends far backwards along the inner side of the maxillary. Man- 

 dible with two series of teeth, the inner being formed by very small 

 teeth implanted on the edge of the inner lamella of the bone. 

 Nostrils lateral, close together, separated by a membrane only, and 

 situated immediately before the eye. GiU-openings wide, the giU- 

 membranes being free and separate ; gill-rakers slender, lanceolate, 

 widely set. 



"West Africa. 



1. Sarcodaces odoe. 



Salmo odoe, Block, taf. 386. 



Xiphorhamphus odoe, Miill. 8r Trosch. Hor. Ichth. i. p. 18. 



Xiphorhynchus odoe, Cuv. 8f Val. xxii. p. 345. 



B. 4. D. 9. A. 11. V. 9. L. lat. 60. 



Vertical and ventral fins with black spots. 



"West Africa. 

 a. Adult. Purchased of Mr. Dalton. 

 h. Adult : skull. Purchased of Mr. Dalton. 



