316 iciineumomuj:. 



narrow, subcoiivex, slightly curved, witli ;iu obsolete disctil sulcus; 

 terebra not exported. L(<js slender, red, with the hind femora 

 occasionally infuseate. Whujs with the areolet triangular, entire 

 and sessile, with the outer nervure weak, eniittijig the recurrent 

 nervure beyond its centre ; stigma and tegukc llavescent-red ; 

 nervellus strongly postfurcal and intercepted a little above centre. 



Length 10 niilliui. 



Type in the JJresJau Museum.] 



Yar. orientalis, nov. 



Differs from the foregoing description in having the head much 

 narrower and more constricted posteriorly, distinctly narrower 

 than the eyes ; in the somewhat stouter antenucie, more finely 

 punctate mesonotum, lack of metanotal arete, and in the petio- 

 Jated areolet. 



'' li^mx" {Capt. Boys). 



Type in the Oxford Museum. 



The three specimens upon which the new variety is founded 

 are so closely related to the Pala^arctic type that 1 prefer to regard 

 them as a local race, rather than a new species. 



The typical form is abundant throughout nearly the whole of 

 Europe, occurring in damp situations in the spring, and has been 

 bred by J^rischke in Prussia from two species of Nematus; in 

 Britain it is of ^\ide distribution and very common. 



226. Perilissus tricolor, sp. n. 



(S . A dull black species, with somewhat profuse red, and 

 obsolete flaA'ous, coloration. Head as broad as thorax, buccate 

 behind the internally entire eyes, and black, with a large flavous 

 •spot at the base of the pilose face, another small one at the base 

 of the hardly discrete clypeus, and the discall}' aciculate mandibles 

 centrally rufescent ; vertex very strongly emarginate, frons 

 densely and evenly punctate ; cheeks not short, nor eyes large. 

 Antennce slender, filiform and black, Avith apex of scape rufescent 

 and apices of the flagellar joints subnodulose or setiferous. Thorax 

 a little convex, black, with the prothorax and preradical lines 

 obsoletely flavescent ; metathorax dull and closely coriaceous, red, 

 with only the base of the metanotum to the Aery strong costulae 

 black ; notauli wanting ; basal area quadrate and indistinct, 

 ])etio]ar area basally complete, ver}' short, entire and strongly 

 transverse; remaining areae wanting; spiracles obliquely linear. 

 Scutellum not margined, small, feebly convex, distinctly punctate 

 and flavous ; postscutellum concolorous. Abdomen fusiform, -with 

 basal segment narrow, parallel-sided, and the second strongly 

 dilated throughout ; black, with the third and fourth segments 

 entirely, the second and fifth apically, red, the first obsoletely 

 flavous at a])ex and a large anal spot flavous ; ventral valvulje 

 large. Legs slender, elongate and red, with the anterior coxa; and 

 trochanters flavous and black ; tarsi, posterior tibiae and trochanters, 



