NEMATDS CRASSICORNIS. 193 



Nematus mollis (Yol. II, p. 74). 



Brischke (1. c, new series, vi, p. 2) bred this species 

 from a smooth, bluish-green larva, transversely wrin- 

 kled, with a darker dorsal vessel bordered on either 

 side with white, which fed at the end of June on 

 Vaccinium myrtillus. I have noticed this larva at 

 Rannoch, but failed to rear the imago. 



8a. Nematus crassicornis. 



Nematus crassicornis, Htg., Blattw., 204. 



Black ; the apex of the coxas, the trochanters, the base and apical 

 three-fourths of the four anterior femora, the posterior femora at base 

 and apex, the four anterior tarsi, the basal three-fourths of the hind 

 tibiae and the tegulae white ; the labium brownish towards the apex. 

 "Wings hyaline, somewhat suffused in the middle ; the costa white ; the 

 stigma dark fuscous ; the nervures fuscous. Head stining, shortly 

 pilose, the front and vertex punctured, but not strongly ; pentagonal 

 area obsolete; the antennal fovea small; clypeus distinctly roundly 

 but not deeply incised ; the apex of lab rum transverse. Palpi white 

 towards the apex ,• thorax shortly but rather densely pilose ; the 

 mesonotum obsoletely punctured ; cenchri clear white. Abdomen longer 

 than the head and thorax united ; the anal segment and cerci reddish ; 

 the latter short, thick, about three times longer than broad. Antennsa 

 as long as the thorax and abdomen united, moderately stout, distinctly 

 tapering towards the apex ; the third joint slightly curved beneath and 

 a little longer than the fourth ; the flagellum black above, reddish- 

 brown beneath. First transverse cubital nervure almost obsolete; the 

 second cubital with a horny point ; the third cubital cellule about one- 

 fourth longer than broad, dilated towards the apex. Claws with a 

 subapical tooth. 



The $ nas the antennas thicker, the third joint distinctly curved, 

 the flagellum entirely red. The last segment of the abdomen above 

 projects in the middle, this middle part being raised and separated 

 from the sides by furrows. 



Length 7 mm. $ , 6 mm. $. 



I have seen several English examples of this species. 

 Characteristic (for the group) is the incised clypeus. 

 Germany. 



VOL. IV. 13 



