60 NEMATIJS ABBREVIATES. 



Black, shining ; the knees, tibiae, and tarsi white, the apex of the 

 posterior tibice and the tarsi black. Wings very faintly obscured, the 

 costa and stigma dark testaceous. Antennae a little shorter than the 

 body. 



The $ has the antennae thickish. 



Length 2 lines. 



j^. a . 5 . Trochanters white. 



The black antennae, labrum, and basal parts of the 

 legs, as also the black posterior tarsi, will readily serve 

 to indicate this species. 



The larva, according to Brischke, feeds on birch ; it 

 is green, the anal segment carmine red, smooth, very 

 shortly and finely haired. From the fourth segment the 

 dorsal canal is darker than the body, it being blackish 

 green, and is bordered on either side by a white line 

 which ends at the eleventh segment. The blackish- 

 brown spiracles are bordered by a narrow pale line. 

 Head smooth, yellowish-green, finely punctured with 

 brown, the brown points forming a dark mark on the 

 vertex. Mouth and antennas brown, as are also the 

 claws of the feet. When the larvae are mature the 

 white dorsal lines disappear. 



The eggs are laid in pockets in the teeth of the leaf. 

 There are two broods in the year. 



It seems to be rare compared to the others of the 

 group. I have only seen a ? and ^ from Clydesdale, 

 the ? being the aberration, which is also noticed by 

 Thomson, who says that the species occur all over 

 Scandinavia. Italy (Magretti). 



7. NEMATUS ABBREVIATES. 



Nematus abbreviatus, Htg. } Blattw., 205, 38 ; Voll., Tijd. Ent., 



v (2), 59, pi. 1 (lar., &c.) ; Ent., 

 No. 140, 49 ; Kalt., Pfl., 200, 781 ; 

 Cam., Fauna, 34, 22; Andre, 

 Species, i, 130; Cat., 16,* 56; 

 Br. and Zad., Schr. Ges. Konig., 

 xxiv, 136. 



Black, half shining, covered with short down ; vertex finely punc- 

 tured; pleurae opaque, coarsely punctured. Knees, anterior tibiae 

 and tarsi sordid testaceous ; posterior tibiae fuscous ; labrum piceous. 



