ON SOME NEW AND RARE SCOTTISH DIPTERA 221 



of L. tenellus, with a note on its habitat, whereupon, the same 

 day (Sept. 3), he visited the Forest, Clackmannanshire, and 

 succeeded in finding eight or nine during a short afternoon's 

 search. The first example was under a rotten branch, and 

 most were under chips of wood and pieces of bark lying on 

 the ground in the fir wood, but one was on a fungus, a species 

 of Russnla. There were also found a similar number of 

 Arion subfuscus and one A. minimus. 



On September 8 I received a collection of various 

 slugs from Mr. Charles M'Intosh, who had collected them 

 on the 6th above Inver, Dunkeld, in the vice-county of 

 Perth Mid, which included Limax arborum, Agriolimax 

 agrestis, L. maximus var. fasciata, all the species of Arion 

 except A. minimus, and to my great gratification a 

 characteristic and unmistakable example of L. tenellus var. 

 cerea. We are indebted to Mr. A. Rodgers of the Perthshire 

 Natural History Museum for inducing Mr. M'Intosh to 

 collect, and thereby leading to this find for a third locality 

 and county. 



This prompt confirmation of the original discovery is 

 most satisfactory, and no doubt now we shall hear of 

 numerous localities. 



On September 24, after the above was in type, I 

 received from Mr. George Sim of Aberdeen a mixed collec- 

 tion of slugs from Invercannie, near Banchory, Kincardine- 

 shire, taken on September 23, including eight species, one 

 of which was L. tenellus var. cerea, a fine example. This 

 adds a fresh locality and a fourth county to its authenticated 



range. 



ON SOME NEW AND RARE SCOTTISH 



DIPTERA. 



By PERCY H. GRIMSHAW, F.E.S. 



i. ONCOMYIA SUNDEWALLI, Ztt. (new to Britain). I 

 have much pleasure in recording the capture of two speci- 

 mens of this fine and very distinct species by my friend Mr. 

 J. W. Bo\vhill on the North shore of Loch Feochan, near 



