1897.] PHTTOPHAGOTTS COLBOPTBBA OP AFRICA. 553 



a short and obsolete perpendicular groove indicating the com- 

 mencement of the sulcus found in the other members of the 

 genus. 



DiBOLOiDEs, n. gen. 



Oblong-ovate, very convex ; antennae short, the terminal joints 

 thickened; thorax strongly transverse, without depressions ; elytra 

 not wider at the base than the thorax, punctate-striate ; posterior 

 femora strongly incrassate, their tibise greatly widened towards 

 the apex, deeply longitudinally sulcate, with a strong spur at the 

 apex, placed at the middle, the metatarsus of the posterior legs 

 nearly as long as the following joints together ; anterior tibiae 

 unarmed ; claws appendiculate ; the first abdominal segment double 

 the length of the following ones ; prosternum narrowed between 

 the coxse ; mesosternum small, widened posteriorly ; the anterior 

 coxal cavities closed. 



Amongst the genera with closed coxal cavities, the present one 

 approaches most nearly in shape the Australian genus Arsipoda, 

 from which it differs in the want of any thoracic grooves, in the 

 much shorter antennae, and the narrower and not raised prosternum. 

 The insect also resembles Dibolia, but in that genus the cavities 

 are open. 



DiBOLOIDES EICOLOE, n. sp. (PI. XXXIV. fig. 5.) 



Eeddish fulvous, the apical joints of the antennae and the 

 posterior femora black ; thorax finely granulate-punctate ; elytra 

 finely punctate-striate, black, with two round fulvous spots at the 

 middle. 



Var. a. Elytra fulvous, with a transverse black band at the 

 base and a sutural spot near the apex. 



Var. b. Elytra entirely fulvous. 



Length 1|-1| line. 



Head with a few very fine punctures, reddish fulvous, frontal 

 elevations and carina absent ; epistome separated from the face by 

 a shallow transverse groove, the anterior portion rather deflexed, 

 paler ; palpi filiform, flavous ; eyes large, ovate ; antennae only 

 extending to the base of the thorax, flavous, the terminal three 

 or four joints black, transverse, basal joint long and slender, 

 lightly curved, second joint short and thickened, third more 

 slender and one-half longer, the intermediate joints slightly 

 triangularly widened, terminal ones narrower and shorter again ; 

 thorax nearly three times broader than long, the sides nearly 

 straight and narrowed in front, the angles not produced, but 

 distinct, the surface extremely closely and finely punctured, 

 reddish fulvous ; scutellum small, triangular ; elytra strongly 

 convex, ovate, widened towards the middle; finely punctate- 

 striate, each elytron with ten rows of punctures, the subsutural 

 row very short, the lateral two rows rather larger and more closely 

 approached, the interstices everywhere very finely and closely 

 punctured ; elytral epipleurae very broad, concave ; underside and 



