South-Jfiican Species of Coisoi\\i3. 403 



the intervals broad, jilane, and impunctate ; colour shining 

 black. Legs black, shining, im])unctate; tarsi ferruginous. 



Natal: ^lalvern. 



Type in the Stockholm Museum. 



Tiiis does not appear to be a common insect, and I have 

 taken it only under the bark of rotten Katir booms {Erylhrina 

 caffra). 



12. Cossonus complanatus, sp. n. 



Long. 5, lat. 1-i mm. 



Head elongate, subquadrate, constricted near base, with 

 very fine scattered punctuation and a minute fovea on fore- 

 head ; eyes somewhat prominent. Rostrum rather shorter 

 than the head, strongly and quadrangularly dilated from 

 middle to apex, upper surface almost plane and with the 

 punctuation rather stronger and closer than on the head; 

 antennaj ferruginous, inserted close to apex. Prothorax a 

 trifle longer than broad, apex truncate and mucii narrower 

 than base, which is bisinuate, sides slightly rounded, broadest 

 behind middle, gradually narrowed anteriorly, and with a 

 constriction at apex ; upper surface plane, much depressed, 

 with fine scattered punctuation, having an impunctate central 

 line, on each side of which there is near the base a very faint 

 longitudinal impression containing rather deeper punctures, 

 posterior angles with a minute sharp projection; colour 

 black, shining. Elytra strongly depressed, jointly rounded 

 at base, a little broader than prothorax at the shoulders, 

 which are roundedly prominent, sides parallel to far beyond 

 middle; upper surface plane, with ten complete deep striae 

 containing rows of distinct closely-set punctures, the intervals 

 narrow, plane, and impunctate; colour piceous black, shining. 

 Legs black, bare, finely punctulate : tarsi piceous. 



Natal: Malvern. 



Type in the British Museum. 



1 have seen only a single example of this very distinct 

 species, which I captured flying at sundown in August 1897. 

 Its extremely depressed form will at once distinguish it from 

 all other South-African species, its nearest ally in this respect 

 hcmg (/lahricoUis, Boh. These two species are the only ones 

 in which the prothorax is smooth and without any distinct 

 carina or other sculpturing. From gJah-icoUis the present 

 species may be further distinguished by its much shorter and 

 broader rostrum, differently shaped head, and by the deeper 

 and closer striation of the elytra. 



