208 Mr. E. Saunders' Sipwj^sis of British 



(3) 1. Deep black; J and ^ very sbiuing .. .. fiiUginnsa. 



(1; 2. Brownish; J and ^ not very shining. 



(0) 3. Tibite with erect prominent hairs. 



(5) 4. ^ with the mandibles with one tooth, wings clear; 

 J head not so wide as thorax, wings clear; ^ 

 diirk brown . . . . . . . . . . . . iiiger. 



(■4) 5. ^ with the mandibles 5-toothed. wings dusky at 

 the base ; J head wider than the thorax, 

 wings dusky at the base ; ^ pale yellow . . umhratus. 



(;i) C. Tibi-aj without prominent hairs. 



(8) 7. ^ and J with the wings more or less clouded; ^ 



Ibi-ehead not channelled; ^ pale yellow .. flavus. 



(7) 8. (J and J wings quite clear; ^ forehead chan- 

 nelled ; ^ brown . . . . . . . . . . aliemig. 



1. fuMqinosus, Ltr. Ess. Fourm. France, p. 36. Fig. 



Hist. Nat. Fourm. pi. v. fig. 27. 

 Jet-black, shining ; head widely excavated behind. 



(? about the same size as the ^ ; thorax and 

 abdomen with a few scattered hairs ; flagellum of an- 

 tennie and the tarsi testaceous ; wings dusky at the base. 

 Length 4 — -5 mill. 



? and ^ like the c? , but rather more shining ; the seg- 

 ments of the abdomen above with an apical fringe of 

 fine short hairs, set at some distance from each other ; 

 extreme apex of the body, tarsi, and sometimes tibiae, 

 more or less testaceous. Length, ? 6 mill., ^ 3—5 mill. 



Hah. — Generally distributed ; in old trees, &c. Very 

 distinct from any other species. 3^ and 2 are found in 

 June and July. 



2. niger, Linn. Syst. Nat. ed. x. 1, p. 580. 



^ fuscous, legs and flagellum of antennas rather 

 paler, entire insect covered with a fine, adpressed, grey 

 pubescence, and with scattered, fine, erect hairs ; head 

 slightly narrower than the thorax, deeply sulcate in 

 front ; mesothorax, looked at sideways, much raised and 

 rounded in front, flat on the disk ; wings hyaline ; 

 scutellum large, somewhat raised, and nearly square ; 

 scale of the petiole somewhat truncate above, and largely, 

 but very slightly, emarginate ; abdomen somewhat egg- 

 shaped ; scape of the antennae and tibiae with fine erect 

 hairs. Length 3 — 5 mill. 



(^ much larger than the ? , similar in colour, but 

 with the mandibles, legs, and scape of antennae pale 

 testaceous-brown ; head much narrower than the thorax ; 



