Mr. A. Murray on Coleoptera from Old Calabar. 41 



3. Prosopocera dorsalts, Chevr. Rev. et Mag. d. Zool. 

 1858, p. 306. 



Simillima P. niT/ajn, Chevr., sed difFert prgecipue colore obscu- 

 riore elytrorum, macula dorsali albida magis extensa, valde 

 angulata, in medioque marginis ocellis quatuor atris. Ci- 

 nerea ; mandibulis oculisque (flavo limbatis) nigris ; capite 

 anguste sulcato, inter antennas arcuatim impresso nigroque 

 signato ; antennis corpore paulo longioribus, $ parce pilosis ; 

 thorace fusco, injequali sulcis tribus transversis (primo 

 valde sinuato), in basi infraque flavo, spina laterali brevi 

 acuta; elytris brunneo-cinereo fuscoque disperse vel con- 

 nexe variegatis, plaga magna dorsali media albida versus 

 latera angulata, maculis ocellaribusque quatuor anticis 

 nigris, prima albo cincta infra humerum, secunda pone 

 medium elytri in limbo anteriore maculae dorsalis. 



Long. 16 lin., lat. 5 lin. 



This species so much resembles P. niyops that at first sight 

 one would take it for a variety. It differs nevertheless in 

 several points, which seem of specific value : its elytra are 

 shorter and broader ; the dorsal mark is larger and whiter, and 

 more angular on the side ; and, lastly, it has four ocellated 

 black spots, while P. myops has only two ; besides, the place 

 which the dorsal mark occupies is more elongate, rounded, and 

 of a more regular form than in P. myops. Head of a yellowish 

 ash-colour, with some small distant punctures ; the longitudinal 

 line is in the form of a slender ridge from the base to the im- 

 pression between the antennge and a narrow groove beyond it. 

 Eyes black, surrounded by a yellow circle, which is double 

 behind them. Antennae a little longer than the body, brown, 

 slightly pubescent. Thorax transverse, straight in front, 

 narrowly bordered with yellow, bisinuate and yellow behind, 

 with three transverse grooves : the first is deeply sinuate and 

 arched in the middle ; the dorsal impression is in the form of 

 a horseshoe ; its colour above is obscui-e brown, and below 

 yellowish white. Scutellum semirounded, brownish. Elytra 

 sinuate at the base, convex, each rounded at the apex, adorned 

 with four ocellated, silky, black marks, which are surrounded 

 with a yellowish circle, and placed before the middle — the 

 first on the edge of the margin below the shoulder, the second 

 towards the middle of the elytron and a little towards the 

 inner side, resting at its extremity on the anterior edge of the 

 large white dorsal patch. Body below ash-coloured ; breast 

 having a yellow line on its lateral and posterior sides. 



Unique. In my collection. 



