ON THE DIPTERA OF ST. KILDA 151 



(a rare species), TacJiypcza nervosa, Mg., and Lonchoptera 

 trilineata, Zett. (both new to Britain), Ccenosia geniculata, 

 Fin. (rare), and C. albicornis, Mg. (new to Britain). All the 

 specimens are in beautiful condition, and it is a pleasure to 

 add that with characteristic generosity Mr. Waterston is 

 presenting a selection of them to the Royal Scottish 

 Museum. 



In the following list a few notes of interest have been 

 added by Mr. Waterston. These are placed within square 

 brackets, and have the initials J. W. appended. 



Family MYCETOPHILID./E. 



1. SCIARA sp. i $ belonging to the section HA. ic. of Winnertz' 



monograph. 



2. SCIARA sp. i headless <, with yellowish halteres, pitchy legs 



and shining black thorax. 



3. BOLETINA sp. 2 $ $ and i $ . 



4. BOLETINA sp. Three specimens of a smaller species than No. 3. 



5. LASIOSOMA HIRTUM, Mg. i < 



6. SCIOPHILA sp. i (J. 



7. MACROCERA FASCIATA, Mg. i 6*. 



Family BIBIONID/E. 



8. SCATOPSE NOTATA, Linn. Four specimens. 



9. DILOPHUS FEBRILIS, Linn. 6 $ <$ . 



Family CHIRONOMID^E. 



10. ORTHOCLADIUS ? SORDIDELLUS, Zett. 4 $ $ and 4 $ $ of 



what I believe to be this species. 



n. ORTHOCLADIUS sp. i $ of a species coming near variabilis^ 

 Staeg., but I cannot exactly identify it. 



12. TANYTARSUS TENUIS, Mg. i $ and 2 9 $ of this elegant 



and delicate species. 



13. TANYTARSUS sp. 2 $ <, possibly venues, Mg. 



14. METRIOCNEMUS FUSCIPES, Mg. 2 $ $ and i o. 



15. DIAMESA TONSA, Hal. A single 6* belonging to this genus 



agrees pretty well with Haliday's description of tonsa in 



