Dr. A. Gunther on a new Characinoid Genus of Fish. 209 



/3. Antennae filiformes. Unguiculi dentati. Tibiae intermedia? 

 sinuatae. Coxae anticae appropinquantes. 



f Antennae tomentosae. 



* Elytra apice truncato-rotundata. Frons convexa. Oculi 



divisi. 



Tetrops, Kirb. 



(T. prausta, L., fr.) 



ft Antennae sericatae. 



* Elytra apice acuminata. Frons planiuscula. Tibice inter- 



mediae incurvae. 



Stenostola, Dej. 

 (S. nigripes, Fabr., fr.) 



** Elytra apice truncato-emarginata. Frons convexa. Scu- 

 tellum truncatum, brevissimum. Tarsi dimidiae tibiarum 

 longitudinis. Abdomen thorace cum capite longius. 



Oberea, Meg. 



(0. linearis, L., r.) 



*** Elytra apice truncato-emarginata. Frons convexa. Scu- 

 tellum triangulum. Tarsi tibiis tertia parte breviores. 

 Abdomen longitudine thoracis. 



Phytoscta, Dej. 



(P. cylindrica, L., fr.) 



XXIII. — Description of a new Characinoid Genus of fish from 

 West Africa. By Dr. Albert Gunther. 

 [Plate V.] 

 A small collection of reptiles and fishes from the western coast 

 of Africa, just procured for the British Museum, contains a 

 single example of a Characinoid form which is of great interest, 

 inasmuch as it is allied to Ichthyborus*, a genus from the Nile, 

 which, till very recently, was scarcely known. It differs so ma- 

 terially from the East-African form, that it must be referred to 

 a separate genus, which I name 



Phago. 

 In general appearance strikingly similar to Spinachia. Dorsal 



* Kner does not appear to have been aware that these fish were known 

 already to Joannis, and that I had founded a genus for them, when he 

 published his genus Psalidostoma, which is evidently identical with 

 Ichthyborus. Psalidostoma caudimaculatum, Kner, is probably synonymous 

 with Ichthyborus microlepis, Gthr. 



Ann. fy Mag. N. Hist. Ser. 3. Vol. xv. 14 



