Mr. A. E. Eaton on some British Neuroptera. 



399 



Genus Brachycentrus, Curtis. 



B. subnubilus, Curtis. 



Description of the empty pupa-skin. — Mandibles 2-jointed, 



edentulous (fig. 7) ; under a high power, however, their 



inner edge seems very finely denticulated. The subulate anal 



? (beneath). 



crotchets (fig. 8) are testaceous, with a broad wLitish ring at 

 the base, and are nearly as long as the last segment. A raised 

 hairy tubercle in the middle of the back of the last segment 

 precedes a deep excavation. The testaceous chitinous processes 

 on the back of the abdomen, which are subservient to move- 

 ments wdthin the case, are disposed in two oval patches at the 

 base of each of the segments between the third and the seventh 

 inclusively (the points of these being directed backwards) , also 

 on the edges of two semicircular projections from the apical 

 edge of the second segment, and, lastly, in a line near the tip of 

 the fifth segment, with the points forwards. 



Section ^QUIPALPIDjE. 

 Family RhyacopMlidaB. 



In April 1865 I found a small Trichopteron on the river 

 above Cambridge, which did not conform to any described 

 genus. It was pronounced by Dr. Hagen to be the Silo minutus 

 of Kolenati. Unfortunately it was too late to insert a descrip- 

 tion of it in Mr. M'Lachlan's ' Monograph of the British Tri- 

 choptera' [q. v. page 166). 



As it resembles a Bei'ea, and is closely related to that genus, 

 the name Bereodes may be not inappropriately assigned to it. 



