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



down than the antennge ; but the horn, although single, is 

 obviously composed of two horns soldered together ; and it 

 seems very plain to me, coupling it with the other points of 

 resemblance, that it is the same tendency to produce horns on 

 the forehead which we see in Oncideres that is also present in 

 Proso2}ocera, but that the horns have taken a slightly different 

 position and form. 



1. Prosopocera ocellata, Chevr. Rev. et Mag. d. Zool. 



1857, p. 76. 



Grisea, lateribus thoracis infra pectoreque niveis ; in elytris 

 ante medium quatuor notulis ocellaribus nigro-velutinis 

 albo cinctis, prima parva marginali, secunda dorsali obliqua 

 ad maculam albicantem et obliquam margine juncta. 



Mas. Capite cornu plus minusve protenso. 



Long. 10-14 lin., lat. 3^-4 lin. 



Feem. Capite, fronte transversim et semicirculariter impresso. 



Long. 10-12 lin., lat. 3i-4 lin. 



Head grey, occasionally armed in the male with a projecting 

 horn, which is very variable in form, in the largest speci- 

 mens sinuate, toothed on the margins, grooved in the middle, 

 and double-keeled longitudinally. This horn is more fre- 

 quently absent than present. 



I have a specimen which looks so much stouter and more 

 obese than the others, that at first I thought it might be di- 

 stinct ; but I can see no other difference, except that the mar- 

 ginal black spot of the elytra is in it larger than that on the 

 disk, which is not the case in any other specimen I have seen, 

 the marginal spot being usually only half the size of the 

 others. 



One of the commoner species of Longicorns from Old. 

 Calabar. 



2. Prosopocera myops, Chevr. Rev. et Mag. d, Zool. 



1855, p. 185. PI. 11. fig. 8*. 



Fusca, mandibulig oculisque (fulvo limbatis) nigris ; capite 

 rotundato, anguste (inter antennas cruciatim) sulcato ; tho- 

 race subtransverso, quater stricto, antice recto, fulvo, dense 

 setosOj postice profunde sinuato, spina laterali brevi acuta ; 

 elytris, prgesertim dorso, cinereo infuscatis, maculis duabus 

 ocellaribus nigris ante medium ; pectore cum vitta laterali 

 albida. 



Long. 16 lin., lat. 5 lin. 



M. Migneaux's figure in PI. II. renders further description 



unnecessary. 



Rare. * Of vol. vi. of the ' Annals.' 



