180 DOLEEUS INTEBMEDIUS. 



second recurrent on the upper side are milk white. 

 The accessory nervure in hind wing is interstitial. 



Seemingly rare. Three specimens taken at Norwich 

 by Mr. Bridgman. 



25. DOLEEUS INTEEMEDIUS. 



PI. XX, figs. 1 and 2, Saw. 



Dolerus intermedius, Cam., Tr. Ent. Soc., 1881, 575. 



Black, shining ; covered with a short, scattered pubescence. Head 

 roughly punctured ; sutures on the vertex distinct and very shining ; the 

 whole of the scutellum and the middle lobe punctured, the latter with 

 the punctures wider apart ; the lateral lobes also punctured, but not so 

 deeply, and more irregularly ; cenchri large, clear ivory white. Ab- 

 domen longer than the head and thorax, bulged out in the middle ; the 

 basal segment unpunctured, the following finely shagreened ; three basal 

 segments glabrous, the rest shortly pilose ; blotch large, distinct. An- 

 tennae slightly thickened in the middle, shorter than the abdomen; 

 third joint a little longer than the fourth ; the last sharply conical. 

 Spurs pale at the apex ; hinder ones reaching to the middle of meta- 

 tarsus, which is pale, curved at the base and thickened at the apex, and 

 scarcely longer than the two succeeding joints. Wings hyaline, 

 slightly infuscated at the extreme apex. Accessory nervure in hind 

 wings appendiculated ; costa, stigma and nervures black, save the 

 transverse nervures, which are for the most part milk white in both 

 wings. 



The c? has the head and thorax more deeply punctured ; antennae 

 thicker and as long as the abdomen and half the thorax; the third 

 joint almost shorter than fourth. 



Length 3| 4* lines. 



Agrees with varispinus in having the lower part of 

 stigma, recurrent and transverse nervures pale white, 

 but it is smaller and narrower ; the puncturation on 

 head and thorax finer and closer ; cenchri large and 

 clear white; the transverse radial nervure is not 

 received close to transverse cubital and the transverse 

 nervures in hinder wings are wider apart. As in 

 varispinus the base of hinder tarsi is generally white, 

 but it is also black, and the spurs in some cases are 

 blackish, in others almost wholly white. It is smaller, 

 as a rule, than ceneus, but it may readily be known 

 from that species by the head wanting the bluish tinge, 

 by the pale stigma and nervures, and shorter antennas. 



