On new Species of Curculionidse/rowi Africa. 369 



XLH. — On new Species o/Curculionicbe from Africa. 

 By Guy A. K. Marshall, D.Sc, C.M.G. 



[Plate XIII.] 



The types of all the species described below will be deposited 

 in the British Museum. 



The terminology used in describing the male genitalia is 

 that proposed by Dr. David Sharp, F.R.S. (Trans. Ent. Soc. 

 Lond. 1918, pp. 209-222). 



Subfamily Brackyderinm. 



Iphisomus sivr/nnertoni, sp. n. 



<J . Black, with the following markings formed of cream- 

 coloured scales : a narrow median stripe on the prothorax ; 

 a broad stripe on each elytron approximately between stria? 

 2 and 5 from the base to beyond the middle, and a lateral 

 one from behind the shoulder to the middle of the side- 

 margin. Legs red-brown, with all the tarsi and the apices 

 of the front femora and tibiee black. 



? . Black, fairly densely and uniformly clothed with grey 

 or sandy scaling, having a greenish or coppery reflection ; the 

 male pattern often faintly indicated, owing to the scaling 

 being thinner from the base to the middle along the suture 

 and between stria? 5 and 6 ; sometimes coloured like the $ . 



rf $ . Head closely and coarsely punctate, the scaling 

 much more sparse in the £ than in the ? ; the forehead 

 Hat, with the punctures longitudinally confluent and with a 

 central stria which is continuous with, but much narrower 

 and shallower than, the furrow on the rostrum ; the eyes 

 rather strongly convex, the space between them much 

 greater than the length of an eye (5 :3). Rostrum much 

 longer than the head, parallel-sided from the base to beyond 

 the middle, gently dilated at the apex, with a broad deep 

 median furrow and two carina? on each side of it ; the 

 impressed spaces adjoining the carina? longitudinally strio- 

 late, and a shallow lateral impression in front of the eye. 

 Antennae with the scape only slightly exceeding the anterior 

 margin of the eye ; the funicle with joint 1 half as long 

 again as 2, joints 3-7 subequal and slightly transverse. 

 Prothorax a little broader than long, the sides moderately 



Ann. & Mag. N. Hist. Ser. 9. Vol. vi. 25 



