196 [February, 



(Ecetis ochraeea, Curt., in profusion at Lanark Loch ; also occurs rarely at some 

 ponds near Carluke. {CE. lacustris, Pict., not before recorded from the West of 

 Scotland, occurs in Bute.) 



Four species of the genus Bydropsyche occur on the Clyde. H. pellticidida, 

 Curt., and H. instahUis, Curt., are frequent, the latter also occurring on two or three 

 other streams ; the males of these species are much given to wandering, and I have 

 taken specimens of both flying wildly over hedgerows, in the evening, at long distances 

 from running water. H. guttata, Pict., dances in swarms over the tops of the bushes 

 in the afternoon sunshine and in the evening ; the specimens are of large size and 

 dark. H. lepida, Pict., is sometimes common, but irregular in its appearance. 



Wormaldia occipitalis, Pict., one specimen at a small burn. W. sulnigra, 

 McLach., frequent at a small waterfall on one of the burns (a $ from the Clyde is 

 referred to this species with doubt). 



Plectrocnemia conspersa. Curt., a very common insect, and P. geiiiculata, 

 McLach., occurs along with it frequently at one burn. 



Folycentropus flavomaculatus, Pict., the most ubiquitous Trichopteron in the 

 district. Of P. mtdtiguttatus. Curt., I have taken a single $ on the Clyde. 



Cyrnus trimaculatus. Curt., not very common. 



Tinodes tvmneri, L., common at two burns. 



Lype phceopa, Steph., frequent at one place on the Clyde. 



Fsychomyia pusilla, F., abundant on the Clyde. 



Ithyacophila dorsalis. Curt., is as annoyingly common in this district, as it 

 appears to be elsewhere. Rh. septentrionis, McLach., very common at one burn about 

 the end of May and during June. Rh. obliterata,'Mcha.ch., common on most of the 

 streams from the end of August to the end of October. The occurrence of three of 

 the four recorded British species of this genus on the same burn (but, of course, at 

 different times) is noteworthy. 



Qlossosoma vernaJe, Pict., common on the Clyde from April to October. 



Agapettis fuscipes. Curt., common on one burn. A. comatus, Pict., very com- 

 mon on the Clyde. 



The HydroptUidcB find no place in my list ; I cannot doubt that some minute 

 representatives of this family do occur, but have, as yet, been overlooked. 



The list, even for this immediate neighbourhood, cannot be con- 

 sidered nearly complete, and any one working over a wider area, and 

 with more time at his disposal than I have, could very largely aug- 

 ment it ; but, I think, the sixty-nine species enumerated above, justify 

 me in coming to the conclusion that the southern part of the district, 

 drained by the Clyde, is possessed of a very rich Tinchopterous fauna. 



Mr. McLachlan has very kindly confirmed for me such species 

 as I had any doubt about, and Mr. J. J. King, of Griasgow, has as- 

 sisted me in many ways. 



\. 



Carluke, N.B. : Wfh Decemher, 1882. jjj ^ 



