80 NEUROPTERA. 



segment and indeed in the middle of its margin. The app. 

 infer, are large, two-jointed, spoon-shaped and opposite. 

 Between them lies the penis, furnished above and below 

 with a covering valve ; on each side, close to the penis, are 

 its long spear-shaped sheaths. The latter present a very 

 easily comprehensible character for the distinction of R. dor- 

 salis and R. vulgaris; as in the former species they are 

 always strongly curved downwards, and in the latter up- 

 wards. Amongst Pictet's types ticketed by Curtis, R. clor- 

 salis is marked as a variety of R. vulgaris. 



Genus Agapetus, Curtis. 



Antennas somewhat shorter than the wings, stout, with the 

 basal joint rather thicker and stronger than the rest; maxil- 

 lary palpi with two short roundish basal joints; the three 

 following longer and cylindrical; ocelli milk-white, very 

 distinct ; wings nearly similar in size and form ; veins dis- 

 tinct ; in the anterior wings the discoidal cell is as long as 

 the apical cells; hairy covering moderately strong; on the 

 vertex a thick tuft of longer hairs ; spurs 2, 4, 4 ; inter- 

 mediate legs of the females dilated; abdomen of the females 

 obtusely conical. 



Case as in Rhyacoyhila. 



The males have, on the antepenultimate ventral segment, 

 a long, narrow, horny lobe, which is directed towards the 

 apex of the abdomen (an indication of this occurs even in 

 Rhyacophila) ; on the penultimate segment there is some- 

 times a long pencil of hair ; app. superiores small, cylin- 

 drical; app. infer, large, long, oblong, spoon-shaped; be- 

 tween them projects a long cleft cover of the penis, the 

 form and proportions of which vary according to the species. 



