NEMATUS ERICHSONI. 51 



Nemaius Leachii, Dbin., Clavis, 27, 36 (lar.). 

 Pristiphora cincta, Newman, Ent. Mag., iv, 259 (1837) ? 



Antenna a little longer than abdomen, thickish, very slightly taper- 

 ing towards the apex, black, pale brown beneath, the third and fourth 

 joints equal. Head narrower than the thorax, covered with scattered 

 pubescence, slightly punctured, black ; labrum dull testaceous, tips of 

 mandibles piceous ; vertex somewhat projecting ; sutures indistinct. 

 Thorax black, pronotum edged with fulvous at the base ; mesonotum 

 finely punctured, smooth, shining ; pleurae opaque and closely punc- 

 tured. Abdomen longer than head and thorax, the basal and the seventh 

 and ninth segments black, the others red ; cerci short, black. Legs 

 reddish, the tibiae for the greater part white, anterior tarsi pale ; extreme 

 apex of posterior femora above, apices of tibisa and posterior tarsi 

 black. Wings hyaline, with a faint cloud below the stigma ; the second 

 recurrent nervure received considerably in front of second transverse 

 cubital ; first transverse cubital absent ; second cubital cellule with a 

 horny point ; the costa and stigma fuscous, the latter being the 

 darker ; tegulse reddish. 



The (^ is unknown. 



Length nearly 6 lines. 



The larva feeds on the larch, and in Germany is 

 said to be injurious to that tree. It is shining dark 

 grey ; the back (except the second segment) is of a 

 darker grey ; the skin is beset with short, blackish 

 tubercles, the spiracles small and brown ; legs spotted 

 with black ; the head shining black. Perilissus fili- 

 cornis and Pteromalus Klugii, Rtz., are its parasites. 



Erichsoni does not appear to be a common species. 

 I have only seen a specimen taken by the Rev. T. A. 

 Marshall, of which I do not know the locality. Mr. 

 Dale records it from Glanville's Wootton. 



Continental distribution : Sweden, Denmark, Prus- 

 sia, Holstein, Harz, Bohemia, Holland, France. 



Hagen (Canad. Ent., viii, 37) records it from the 

 United States. 



Obs. Kirby (List of Hym., i, 103) adopts the name of Cinctus, New- 

 man, for this species : but I have not followed him in this because 

 Newman's description fits quercus quite as well as it does Erichsoni. 

 Both were described in the same year. 



