124 Dr. M. Burr — yotea on the Forficularia. 



never have erected a new genus for its reception. Its occur- 

 rence in Central Africa, the smooth head, slightly different 

 tarsi, and stronger keels of the elytra are the only distin- 

 guishing characters that I can find. 



The sternal plates are, as in Neolohophora, rather short and 

 broad ; mesosternum rounded ; metasternura with short, 

 truncate, transverse lobe. 



Archidux adolfi, sp. n. 



Glaber, ater, Igevis ; capita, autennis pedibusque interdum fulvo ; 

 elytra carinat-a, subquadrata ; a]a3 aborfcivaj ; pygidium S breve, 

 conicum, apice bituberculatum ; forcipis bracchia <S remota, 

 gracilia, cylindrica, deute uno arinata. 



S. 2. 



Long, corporis .... 13-14-5 mm. 12*5-14"5 mm. 



„ forcipis 8-13 „ 5*5-7 „ 



Size medium ; smooth ; general colour dull black. 

 Antennfe with 14 segments, dull brown, all cylindrical ; 

 third about half as long as first; fourth a little shorter than 

 third, the rest longer. 



Head smooth, tumid, sutures obsolete; black or reddish ; 

 eyes prominent. 



Pronotum a trifle narrower than the head, square, dull 

 brown or black, smooth. 



Elytra abbreviated, smooth, dull black or deep brown, with 

 a distinct costal keel running to the end of the elytra ; poste- 

 rior margin obliquely truncate ; anal angle feeble ; sutural 

 margin decidedly shorter than the costal; a short transverse 

 scutellum exposed. 

 Wings absent. 



Feet long and slender; femora scarcely thickened, all 

 black, or dull brown, blackened at the apex ; tibise long and 

 slender, yellowish or black ; tarsi long and slender, the first 

 segment decidedly longer than the third. 



Abdomen dull black, smooth, scarcely dilated, glandular 

 folds very prominent. 



Last dorsal segment $ smooth, transverse, with a single 

 median impressed point ; slightly tumid over insertion of the 

 forceps; in ? similar, but narrowed posteriorly. 



Penultimate ventral segment $ ? obtusely rounded. 

 Pygidium $ short, thick, tapering, the apex emarginate, 

 with two sharp lobes like tubercles ; in ? very short, 

 globose. 



Forceps with the branches $ remote at base, slender, 

 cylindrical, and very long, almost straight ; inner margin 

 finely denticulate for about half their length, where there is a 



