12 Dr. G. A. K. Marshall on Africin 



strongly from the base to the middle of the disk and 

 enclose a low median scale-covered costa, and on each side 

 of these an indistinct longitudinal impression. Antennce 

 witii joint 1 of the fnnicle longer than 2, the remaining 

 joints short and gradually widening outwardly. Prothorax 

 mucli broader than h)ng, the base aiid apex of equal width, 

 the former arcuate, the latter truncate, tiie sides very 

 strongly rounded, broadest much before the middle ; the 

 upper surface closely set with small low confluent tubercles, 

 and with an indistinct central furrow. Elytra oblong- 

 ovate, parallel-sided from the subhumeral prominence to 

 beyond the middle, very broadly rounded behind, the basal 

 margin not raised ; Avith vei'y shallow sulci, each containing 

 a single row of deep close punctures ; the intervals only 

 slightly convex and bearing a single row of broadly truncate, 

 scale-like, erect setse. 



Length 3j-4^ mm., breadth 2-2^ mm. 



Zambezi R. 



Described from two specimens. 



Genus PROscErHALADEREs, Schh. 



To this genus are here referred all the African " Strop/io- 

 somws ^' having subglobose elytra. Apart from their some- 

 what different facies, they may be distinguished from the 

 other African species with which they have hitherto been 

 associated by the following points; — The mentum is entirely 

 devoid of true setae, though in most of the species there 

 is a row of scales along its anterior edge — a very unusual 

 character; the corbels of the hind tibiee are more nearly 

 terminal in position ; the first joint of the funicle is never 

 longer than the second, being rarely equal to it and usually 

 distinctly shorter; the apical margin of the rostrum is 

 deeply sinuate ; and the hind coxae are distinctly separated 

 from the elytra. 



The true European Struphosomus differ in having non- 

 squamose and nou-carinatc mandibles, non-squamosefuuicles, 

 a distinctly longer metasternum, and more coarsely facetted 

 eyes. 



The described species which should be placed here are : 

 Strophosomus aspericollis, Fhs., S. linentus, Fhs., S. varia- 

 bilis, Fhs. (Ofv. K. Vet.-Ak. Forh. 1871, pp. 13, 14), 

 S. binotatus, Mshl., and S. sallsburiensis, JMslil. (Proc. Zool. 

 Soc. 190G, pp. 912, 913) ; and more than a dozen additional 

 undescribed species are known to me. 



