1 KA r Beceiuber, 



raiidi smaller, is only 12 mm. ; the males have the lioarl much swollen behind the 

 eyes, it is less so in the female ; the traiisvei-se anal nervure is divided only just below 

 the middle, and all the coxfe are black. 



2. I have only one male of this form, which I believe is the true tenuicorne, 

 The head is slightly swollen behind the eyes, and the transverse anal nervure is 

 divided well below the middle, as figiu-ed by Wesmael (Revue des Anom. de 

 Belgique). 



3. This appears to be the commoner form in Britain. The head is decidedly 

 narrower at the neck than against the eyes ; the transverse anal nervure is divided 

 below the middle, lower down than No. 1, and higher up than No. 2. 



I can see no difference in the sculpture, it is possible that all are only 

 varieties of one species ; Holmgren says, " pleuris medio nitidis." I find the meso- 

 pleura is shining, punctate, with longitudinal rugfe above. 



Mr. W. H. B. Fletcher has bred two males of this same group 

 (having the antennpe as long as or longer than the body) from mixed 

 larvae from sloe, taken in Abbotswood, Sussex, which differ fi'om the 

 three species described, having the transverse anal nervure of the 

 hind- wing not divided ; from brevicoJle they differ in not having the 

 hind tarsi distinctly incrassatcd ; the flagellum is entirely dark ; and 

 the hind-legs are dark brown, v»'ith tarsi j)artly pale. From vnritnrsum 

 they differ in having the 1st joint of flagellum not more than one- 

 fourth longer than the 2nd, in varitarsiim it is about twice as long ; 

 the sculpture of the mesonotum is much finer, and it is much more 

 distinctly trilobed ; they differ ivova Ji'ivitarsum, Brischke, in the 

 colour of the legs and antenn.T, and in the sculpture of the thorax, 

 which Brischke says is coarsely and densely punctured ; below I give a 



description : — 



Anomalon NicmiPEs, n. sp. 



AntenncB corporis longitudine, alcB nervo transversa anali non fracto pedlhus 

 posticis maxima exparte nigro-fuscis. 



Head not narrow behind the eyes ; antennae as long as the body, first joint of 

 flagellum not more than one-fourth longer than the second ; head with very fine 

 scattered punctures, finely rugose above the antennse, and in the neighbourhood of 

 the ocelli. Thorax somewhat shining, finely punctate, distinctly trilobed ; scutellum 

 somewhat depressed ; metathorax rather finely reticulate ; abdomen and legs 

 slender, hind tai'si slightly thickened. 



Black ; face, mandibles, cheeks, a spot on vertical orbits, and scape beneath, 

 yellow ; antennae black. Abdomen red, the back of all the segments black, the 

 seventh entirely so. Front and middle legs yellowish-red, coxte and trochanters 

 yellow ; hind-legs nigro-fuscous, apex of coxae reddish, extreme base of femora 

 reddish, middle of tibiae rufo-fuscous, apex of first tarsal joint and remaining joints 

 reddish. 



Male. Length, 10 — 11 mm. 



Norwich : October Z\st, 1887. 



