220 [March, 



Stenophylax picicomis, Pict. — The 6* common at a lateral streamlet in the Val 



Koseg, but only one ? ; one ? near the Statzer-See. S. latipennis, Curt. — Yal 



Celerina, two very dark ? . 



Halesus digitatus, Schrk. — One $ between Pontresina'and Samaden (probably 



early), darker than examples from flat districts.' H. rtifcollis, Pict.— More than 



twenty examples ; especially frequent at a torrent between Pontresina and Samaden 



(I now suspect that H. mcestus, McLach., is not distinct). H. hilaris, McLach.— 



One ? at the torrent above-mentioned (probably early). H. auricollis, Pict. — 



Scarce (probably early). Two <? between Pontresina and Samaden, one $ on the 

 summit of the Julier Pass. 



Metancea fiavipennis, Pict. — Generally distributed ; 'very common in the Yal 

 Celerina ; varying greatly in size. 



Brusus discolor, Ebr. — Generally distributed and common ; about fifty examples, 



varying much in size and in the comparative duskiness or brightnes of the wings. 



B. chrysotus, Ebr. — Eare. One 3 and one ? in the Yal Eoseg near the glacier, one 

 ? in the Yal da Fain. B. trifidus, McLach.— Streamlets supplying the Statzer- 

 See j more common at small streamlets between Pontresina and Samaden. The 

 examples are remarkably small. 



Cryptothrix nebulicola (Hag.), McLach.— Abundant at the torrent in the Yal 

 Languard, and also at another between Pontresina and Samaden ; those from the 

 latter locality are very large. 



Potamorites liguttatus, Pict. — Three very dark S at a streamlet in the wood 

 opposite Pontresina, but no $ : thirteen ? along the stream in Yal Bevers, but no 

 $ (almost the only species found along this snow-fed stream). I am at a loss for a 

 reason to account for this unequal distribution of the sexes. The $ shows great 

 variability in the length of the discoidal cell, as already remarked. 



LEPTOCERID.E. 



Percea pullata, Curt. — Two <J at boggy ground in Yal Bevers. 



Odontocerum albicorne, Scop.— Yery common at the Lake St. Moritz ; also 

 along the Inn between Celerina and Samaden. 



Mystacides nigra, L.— Lake St. Moritz. 

 Htdropstchid^;. 



Bolophilus copiosus, McLach. — One $ in the Yal Celerina. 



Wormaldia occipitalis, Pict. — One $ between Pontresina and St. Moritz. 



Plectrocnemia conspersa, Curt.— One J at the stream between the Statzer-See 

 and Lake St. Moritz. 



Holocentropus dubius, Ebr. — One $ at the Statzer-See. 



EHYACOPHILID.E. 



Rhyacophila persimilis, McLach. — A few examples at the falls of the Inn at 

 St. Moritz. A few others from the stream between the Statzer-See and Lake St. 

 Moritz show a distinct difference, although the localities are so near each other. 

 They have the dorsal process shorter and broader, and the dilatations of the penis 

 more acute, thus showing a tendency towards Ph. acutidens, McLach., without, 



however, being sufficiently pronounced to be identified therewith. Ph. vulgaris, 



Pict. — Decidedly scarce ; taken singly above the Morteratsch glacier, and between 



