Longicornia from Africa and Madagascar. 313 



Hah. Mombas, E. Africa. 



In style of marking and colour resembles the two 

 preceding, especially the first, but the postero-lateral 

 fuscous patch of each elytron is more broken up into 

 line-like spots, which enclose two whitish spots. The 

 j)resent species is very distinct by the numerous very 

 small tufts on the elytra, by the fasciculose tubercle 

 instead of an elongated crest on each near the base, and 

 by the apices of the elytra rounded off to the suture, and 

 not furnished with a spine. The sternal processes have 

 a structure similar to that in the two last species, and in 

 /. tridens. The eyes are small. 



Notwithstanding the marked structural differences 

 between the three species just described, I feel compelled 

 to place them in the same genus. Beyond having a 

 longer third joint to the antennae, they differ in no 

 essential respect from Idactus tridens. I agree with Mr. 

 Pascoe that the genera Idactus and Oeax are best placed 

 near Lasiojjeziis. Ocax, in Gemminger's catalogue, is, 

 without reason, placed as a synonym of Acmocera ; so 

 also is Emphreus — a very distinct genus which should, I 

 think, be placed in the group Barceince near Stenobia. 

 Judging from the description, (Baneus) Sundewallii, 

 Filhr., must be extremely closely allied to, if not identical 

 with, Emphreus f err uginosas, White. 



Prosopocera antennata, n. s. 



5 . Griseo-pubescens, elytris pallide brunneo irroratis, sin- 

 giilisque pone humerum macula parva lateral! uigro-velutina ; 

 pronoto antice rotundato, basi bisinuato, disco medio leviter 

 inaequali, tuberculis lateralibus prothoracis sat validis, apice sub- 

 obtusis ; elytris humeris minute granulatis deinde spa-sim punctu- 

 latis ; antennis corpore vix aequalibus, articulo tertio'quam scapo 

 breviori. Long. 27 ; lat. 11 mm, 



Hab. Yoruba (W. Africa), [Capt. Moloney). 



Head with the front in its upper part flat or slightly concave, in 

 its lower part somewhat convex, with a raised median line extend- 

 ing from base to vertex, with a transverse impressed line between 

 the eyes above the antennal tubercles, and with two oblique nude 

 lines on the basal part of the front. Eyes of moderate size, their 

 lower lobes reaching a little more than half-way to the base of the 

 mandibles. Pronotum with its front margin rounded, its basal margin 

 bisinuate ; with four transverse impressions, two of which, close to 



TRANS. ENT. SOC. LOND. 1890. — PART II. (jUNE.) Y 



