■(52 [March, 



collecting operations were cut short by violent tliunderstorms. This 

 locality is specially interesting, because the water-condition — a foaming 

 torrent in a deep gorge — is not to be found elsewhere for a long 

 •distance, and those insects requiring such a condition naturally con- 

 gregate at this point. 



In all only 37 species were taken, a disappointing number for a 

 Swiss excursion ; and of these the only ones of importance (outside 

 questions of local interest) are Driisus mixtus, Pict., Rhyacophila 

 jihUopotamoides, McLach. (new for Switzerland), and Rhyacophila 

 aurata, Brauer. 



Phrygjneidje. 



Neubonia euficrus, Scop. — Tourbih'e at the base of the Dent de Vaulion, near 



Le Pont, 1 S i very late. 

 Phrtganea geandis, L. — A few at Le Pont, concealed in the chinks of the bark 



of trees ; one in my bedroom. The only female is not larger than the male. 



This appears to be a scarce insect in Switzerland. 



iPHBYGANEA VARIA, F.— Le Pont, 1 cj • 



LlMNOPHILID.W. 



LiMNOPHiLUS EHOMBicus, L. — One mutilated $ at Le Pont. 



LiMNOPHiLUS LUNATUS, Curt. — Le Pont, 1 ? . 



LiMNOPHiLUS EXTEICATUS, McLach.— Near Eocheray, Lac de Jous, 1 ^ . 



LiMNOPHiLUS GRisETJS, L. — Same locality, 1 $ . 



Stenophtlax (Hypochiona) PicicoEifis, Pict. — Sloping meadow at the N.E. end 

 of Lac Brenet, 3 <? , 1 ? . 



Deusus mixtus, Pict. — Source de I'Orbe, 1 <? , 1 $ . This little-known species is 

 probably peculiar to the Jura. I had already seen it from the " Source " (cf. 

 Rev. and Synops., p. 173), and it was the thing in particular I hoped to obtain 

 during my visit. Unfortunately I did not recognise the examples until my 

 arrival home ; had I done so my plans would probably have been modified. 



IPeltostomis sudetica, Kol. — 3 (J, 1 ?, with S. picicornis. 



Smricostoma tibje. 



•Seeicostoma pedemontanum, McLach. — At streamlets ; abundant along the road- 

 side between Vallorbe and Le Day. The individuals belong to a race in which 

 the two branches of the penis-sheaths are widely divergent, and the upper only 

 slightly longer than the lower. 



Ceuncecia ieeoeata, Curt. — Source de I'Orbe, 3 $ . 



Lepidostoma hiktum, F. — Source de I'Orbe, 4 ? . 



Leptoceridie. 



MoLANNA ANGUSTATA, Curt. — Lac de Joux at Le Pont, 1 ? . 



Odontoceeum albicoene, Scop. — Common at streamlets, especially at one running 



into a corner of the Lac de Joux at Le Pont. 

 Leptoceeus cineeeus, Curt. — Lac de Joux and Lac Brenet, abundant. The race 



here represented is that in which the anterior wings in both sexes are brownish, 



the only marking being a pale spot at the arculus. 



