298 iciineumoxid.t:. 



1 am quite prepared to find it a well-known Palrearctic species ; 

 but it is unknown to nie and 1 cannot reconcile it with any of 

 Holmgren's or Thomson's descriptions. Described iroiu a single 

 example. 



-12. Exochus flavinotum, sp. n. 



2 . A nitidulous black species, with the head (except posteriorly 

 and at the upper external orbits), mesotliorax broadly and discally, 

 scutellum, and whole legs, bright ihnous ; head buccate ; basal 

 nervure not continuous. 



Length 5^ millim. 



Assam : iJkhrul, Mauipur, 6400 ft. (liev. W. Fettigrciv). 



Tijpe in the Indian Museum. 



At once recognised from the above two species by its posteriorly 

 much broader head and more deplanate mesonotum, which bears 

 a definite quadrate discal spot. I find no other distinctions of 

 note. 



Genus POLYCLISTUS, Forst. 



Pulijdisf.us. Forster, Verli. pv. Rheinl. 18G8, p. IGl ; Thomsou, 



Deut. Ent. Zeit. 1887, p. 217. 

 Metacoelus, HoliDgren [nee Forst.), Of v. 1873, p. 61. 



Genotype, Iclmeinnon mansuetor, Grav. 



Head laterally almost semiglobose, vertex narrow- and abruptly 

 declivous behind the internally not emarginate eyes, occiput 

 subexavate ; frons densely and finely punctate, with the scrobes 

 distinct, though neither elongate nor deeply impressed; cheeks 

 long, but not sulcata ; face densely and very finely punctate, 

 strongly protuberant below the scrobes. Antennae somewhat 

 short, stout, apically attenuate, with the c? flagellar joints 

 elongate. Thorax Avitli pronotum glabrous and metathoracic 

 costula) strong. Basal abdominal segment strongly constricted 

 basally, with the carinas long and stout ; the three or four 

 following segments laterally margined beyond the centre ; the 

 second transverse and, like the following, densely and evenly 

 punctate. Legs stout, but with the anterior tarsi less strongly 

 dilated than the hind ones ; intermediate tibiae Avith calcaria of 

 equal length. AVings with the stigma somewhat broad, nervulus 

 postfurcal and the lower angle of the discoidal cell somewhat acute. 



Eamje. Europe, Himalayas, United States. 



The above is Thomson's definition of this genus, \\hich he says 

 differs from Exovhus in its more prominent face, immaculate 

 black face and vertex, abruptl}^ declivous occiput, and more 

 strongly narrowed base of the petiole. In practice, however, I 

 have simjjly followed Fclrster's meagre definition, regarding those 

 species possessing two central mefanotal arece as pertaining to 

 Exochus, and those witii thi-ee as falling into tlie present genus. 



