1874.. 107 



LyciENA Lyenessa. 



Upper-side : $, ceruleau-bluc, wdtli the outer margin black, the 

 fringe alternately black and white. 



Underside : pale grey. Anterior wing orange, crossed beyond the 

 middle by a band of five black spots, the costal and outer margins 

 grey. Posterior wing marked by a large triangular brown spot with 

 its apex towards the apex of the wing ; two black spots near the base 

 of the costal margin, and two or three near the anal angle. 



Exp. ih inch. Hab. Chili. 



Oatlands, Weybridge : 



September, 187'li. 



NOTES ON BEITISH TENTHREDINIDJE, WITH DESCRIPTION OF A 



NEW SPECIES OF NEMATUS. 



BY V. CAMERON, Jum. 



Nematus alnivoeus (Ilai'tig). 

 I have long possessed a Nematus that I never could identify, and 

 considered it to be undescribed. On sending a type to Dr. Van Vol- 

 lenhoven for his opinion thereon, he informed me that this is actually 

 the case : it being, however, the species mentioned by Hartig (Stett. 

 Zeits., i, p. 27) under the name of Nemaius ainivorus. As apparently 

 no proper account of it has ever been published, I have drawn up the 

 following description of the $ , the only sex known to me. 



Antennre a little shorter than the body, black ; the third joint slightly longer 

 than the fourth, the remaining joints becoming gradually shorter. Head entirely 

 black, shining, and minutely punctured ; the mandibles reddish. The thorax and 

 abdomen are entirely shining black ; the tegula; greyish-white ; the sheath of the 

 saw hairy. Wings scarcely hyaline, having a faint smoky hue in the centre ; the 

 ncrvures fuscous ; the costa and stigma fuscous with a testaceous tinge. The first 

 sub-marginal nervuro is either absent or very faint ; the second recm-rent nervurc is 

 received a little in front of the second sub-marginal one ; and the second sub-marginal 

 cell has a minute black dot at its lower end. The feet are reddish, with the apical 

 joints of the four anterior, and almost the whole of the posterior tarsi, as well as the 

 apices of the posterior tibia;, and the calcaria, black. The spurs are bifid. 



Long. 2i lines. 



It has a considerable resemblance to Hcmichroa hiridircnfris, Fall., 

 but it wants the white line on the pronotum, the tibia) and trochanters 

 are not whitish, and the wings are clearer, while the difference in the neu- 

 ratiou of the wings at once distinguishes them. Ilerr Brischke has, 

 in his "Abbildungcn und Beschrcibungcn der Blattwespen-Larven," p. 

 12, doubtfully adopted the name of ainivorus for H. luridiventris. 



N. alnicorus seems to be common in .Scotland, appearing during 

 May and June, in the vicinity of willows. Here it occurs at Cadder 

 Wilderness and Fossil Marsh, and 1 have likewise captured it in 

 Htratli Glass and Kinlail. 



