192 Mr. H. W. Bates on the MacropsehmmCottcrilli, Sfc 



Thorax infeqiialis, lateribus grosse nnltuberciilatis. Elytra 

 abbreviata (metathorace vix longiora) apice angustata, 

 singulo fere trianguhim formanti, apice unispinoso. Pedes 

 conipressi ; tibia? anticn3 curvata3 ; posticre flexuosas. 



A remarkable African form of Necydalis, agreeing with 

 the ty])ical genns in the non-dilated terminal joints of the 

 palpi, bi^oad and posteriorly tapering mesothoracic epis- 

 terua, salient anterior coxas, with atrophied prosternum, 

 and sockets elongated laterally and opened behind. In 

 the excessively short muzzle and very long antennse it 

 agrees with the genus Psebium. 



Blacropsehium Cotterilli. 



Castaneo-rufum, subopacum, elytris castaneo-nigris 

 politis ; capite, thorace, antennarumque articulis 2 basalibus 

 obscnrioribus ; corpore subtus, capite, thorace et scutello, 

 rufo-hirtis ; pedibus breviter rnfo-pilosis, antennis nudis ; 

 elytris supra planis, minutissime punctulatis, bicarinatis. 



Long, (ad abdominis apicem) 15 lin. (ad alarum apiceni) 

 18 lin. $. 



The separation of the epistome from the head in this 

 remarkable species is more complete than in the majority 

 of the Prionidce. The labrum is depressed between the 

 base of the mandibles, and bears two long tufts of rufous 

 hairs. The general colour of the insect is chestnut-red, with 

 the head and thorax rather darker, opaque and minutely 

 reticulate-punctate ; the elytra ai'e dark blackish-brown 

 and highly polished, although finely punctured. Each 

 elytron forms a curvilinear triangle, the apex of wdiich at 

 the inner side is prolonged into a stout spine. The ample 

 metasternum is clothed with long, furry, rufous hairs, and 

 similar hairs, but shorter, clothe all other j^arts of the 

 body except the elytra and the anteunte ; the latter being 

 minutely granulate and opaque from the third joint. 

 The excessively flattened antennal joints are slightly 

 dentate at their apices on one side. The abdomen is 

 broad and sessile. 



Lake Nyassa. Discovered by H. B. Cotterill, Esq. 



