European Triehoptera. 301 



This genus is founded upon Aplieloclieira ladogensis of 

 Kolenati^ and an undescribed species^ A. ohesa of Hagen. 

 These agree with Aplielocheira of Stephens (Diplectrona, 

 Westwood, ncc Kolenati) in scarcely any particular, save 

 in the internally serrate antennas, being robust insects 

 with the fades of the larger species of H^j dropsy die; the 

 presence of a median transverse costal veinlet and the 

 very greatly dilated intermediate legs of the female 

 especially separating the two genera. 



The two known species both inhabit Northern Europe; 

 the following description of the appendices of ladogensis 

 is raade from specimens from Lapland. 



Appendices of the $ all yellowish or testaceous, con- 

 trasting strongly with the black abdomen, the apical 

 margin of the last segment of which is truncate; app). 

 sup. finger-shaped, rounded at the apex, and hairy ; app. 

 inf. very short and broad, produced internally at the 

 base; app. intermed. long and shining, curved strongly 

 downwards, parallel, the apex acute, the apical half 

 slender, the basal half slightly thickened; from between 

 the app. intermed. proceed two long sheaths, lying 

 closely together, the apical portion being suddenly 

 dilated and rounded ; below these sheaths is the very 

 large penis, which is deeply canaliculate above in its 

 basal portion, the apical portion being very obliquely 

 truncate and dilated , furnished Avith a strong triangular 

 spine-like tooth in its middle above. The ? shows only 

 inconspicuous valves at the apex. 



DoLOPHiLus, n. g. (PI. XIV. fig. 2) . 



Antennae shorter than the wings, stout (the apical por- 

 tion spirally twisted in dead specimens of the $ ) , the 

 joints nearly cylindrical; after the apical third the sutures 

 are furnished with short and somewhat verticillate hairs ; 

 the basal joint scarcely longer than the others. Head 

 densely pilose. Ocelli present, but concealed in the 

 dense hairs of the vertex. Maxillary palpi long and 

 pubescent ; the two basal joints very short, the second 

 being broader and stouter than the first; third joint 

 very long and slender ; fourth one-third the length of 

 the third ; fifth scarcely longer than the third, more 

 slender and multi-articulate. Labial palpi small, the 

 basal joint short, the second and third long and slender. 

 Eyes prominent. 



T 2 



