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



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

 obviously composed of two horus 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 

 Prosopocera^ but that the horns have taken a slightly different 

 position and form. 



1. Prosopocera ocellata, Chevi'. 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 comu plus minusve protenso. 



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



Foeni. Capite, fronte transversim et semicirculanter impresso. 



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



Head grey, occasionally armed in the male with a projecting 

 horn, which is veiy 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 tlian 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 

 otliers. 



One of the commoner species of Longicoms from Old 

 Calabar. 



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



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



Fusca, mandibulis oculisque (fulvo limbatis) nigris ; capite 

 rotundato, anguste (inter antennas ci-uciatim) sulcato ; tho- 

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

 setoso, postice profunde sinuato, spina laterali brevi acuta ; 

 elytris, praesertim 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 fiui:her description 



unnecessary. 



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



