(50 [March, 



and Syncalypta hirsuta. Sharp, frequent ; Hydrothassa aucta, F., Aphodius errati- 

 cus, L., in numbers ; A. stict iois, Fanz., and A. plagiatus, L., scarce ; A. luridus,¥., 

 very common, both the pale and the black forms being equally well represented. 

 Mr. Walker and I each met with one or two specimens of a handsome variety of 

 the last mentioned species, in which the base of the elytra is black, and the apex 

 lurid-testaceous, these colours interlacing where they meet on the alternate 

 interstices. 



Away from the flood-rubbish, chiefly on the banks of the fresh-water ditches 

 which intersect the marshes, I met with Dromius nigriventris, Thoms., Ochthebius 

 exaratus, Er., Coecinella 22-punctata, L., Coccidula scuteUata, Herbst, and a few 

 specimens of Bagous suhcarinatus of Sharp's Catalogue. 



27, Hereford Square, S.W. : 

 January, 1899. 



TRICHOPTERA, PLANIPENNIA, AND PSEUDO-NEUROPTERA, 



COLLECTED IN THE DISTRICT OF THE LAC DE JOUX 



(SWISS JURA) IN 1898. 



BY ROBERT McLACHLAN, F.R.S., &c. 



It had long been my desire to test the capabilities of the Swiss 

 Jura in the way of Neuropterous insects, and this was carried into 

 effect in the summer of 180S, in company with my friend Mr. H. S. 

 Eaton, who has often been my compagnon de voyage. In choosing a 

 locality I hit upon the di.strict of the Lac de Joux, in a corner of the 

 Canton Yaud, partly because it appeared to be little known entomo- 

 logically, and also because it was out of the usual run of English 

 tourists. It did not come up to my expectations ; but I do not regret 

 having visited a district in many other ways of great interest. 



Our head-quarters were at the village of Le Pont, at the JST. end 

 of the Lac de Joux, and there I stayed from July 25th to August 

 10th. A comfortable old-fashioned hotel is to be found there, but its 

 sleeping accommodation is inadequate to the demand, and the guests 

 are mostly quartered outside its walls. A new hotel, on modern lines, 

 probably now in course of construction, will remedy this ; at the 

 same time it will render the primitive simplicity of the village a thing 

 of the past. 



The elevation of Le Pont is about 3300 ft., and the highest point 

 in the neighbourhood (Mt, Tendre) rises to over 5500 ft. The hills 

 are clad with spruce fir, with some beech, and other trees that like a 

 dry calcareous soil. Lac de Joux is 5 miles long, by Ij broad ; a 

 small screw steamer makes a zig-zag course on it from one end to as 

 near as it can get to the other, and back again. It is connected with 



