South- African Species of Cossonus. 395 



anteriorly, with distinct confluent punctuation and occasionally 

 a faiiit central carina; antenna inserted about middle, piceous. 

 Prothorax bipartite, longer than broad, apex truncate and 

 much narrower than base, which is deeply bisinuate ; a very 

 deep constriction near apex; the posterior portion slightly 

 convex, evenly set with large deep punctures and with an 

 obsolete median carina ; the anterior portion somewhat raised 

 and much less coarsely punctured ; colour dull black, bare. 

 Elytra separately rounded at base, a little broader than pro- 

 thorax at shoulders, which are sloping, sitles subparallel to 

 beyond middle ; upper surface slightly convex, with only 

 eight complete striaj, containing rows of very large and deep 

 toveola?, the third and fourth rows each divided into two at 

 base by narrow carinse extending only a short distance, the 

 intervals very narrow, each with a row of indistinct and 

 distant punctures bearing minute setre, which can only be 

 perceived with difficulty; colour dull black. Legs closely 

 punctured and with sparse pale pubescence, femora black, 

 tibiae and tarsi piceous. 



Cape Colony: Algoa Bay {Dr. H. Braims) ; Natal: 

 Malvern ((7. N. Barker); TiiANSVAAL: Leydenburg {Dr. 

 J. W. B. Gun?nnq) • MashoNALAND: Victoria. 



Type missing; in Ecklon and Zeyher's collection. 



This species may be readily recognized from all its South- 

 African congeners by the structure of the thorax. The only 

 specimen I have taken was found under the bark of a large 

 dead acacia. The species has been recorded by Faust from 

 Camerun and by Gerstaecker from Arusha in German East 

 Africa. Some specimens are covered with a fine earthy 

 indumentum, which can be made to scale off; it is not quite 

 clear whether this is a natural covering or merely adventitious. 



2. Cossonus Sheppardi, sp. n. 



Long. 5-6, lat. 11-1^ ram. 



Head subconical, almost im punctate on vertex, forehead 

 closely and coarsely punctured and with a small central 

 fovea, each puncture being filled with a short, depressed, 

 scale-like, white seta ; eyes prominent. Rostrum stout, about 

 as long as head, scarcely curved, gradually dilated from base 

 to apex ; upper surface plane, with punctures and setaj similar 

 to those on forehead ; antennte ferruginous, inserted in front 

 of middle. Prothorax longer than broad, apex trancate, base 

 faintly bisinuate, sides slightly rounded, broadest rather 

 behind middle and strongly constricted near apex ; upper 

 surface slightly convex, without any central furrow or 



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