ON SOME NEW AND RARE BRITISH DIPTERA 21 



itself more and more upon my mind, is the large proportion 

 of Scandinavian species which are turning up in Scotland, 

 revealing a remarkably close similarity in the insect fauna 

 of these two countries. Before dealing with the various 

 species seriatim, I must express my indebtedness to the 

 gentlemen who have so kindly contributed to my knowledge 

 of the distribution of Scottish Diptera, and whose names are 

 mentioned under the various species. 



SYRPHUS ANNULIPES, Ztt. {new to Britain}. Of this 

 large and handsome species, a female was taken on ragwort 

 in Kinfauns Woods, in July of last year, by Mr. W. Willie 

 of Perth. It was forwarded to me for identification, along 

 with a large number of other specimens, by Mr. Rodger, 

 Curator of the Perth Museum, under whose care this in- 

 teresting addition to the British fauna is now to be found. 



As I quite expect such a conspicuous insect will be 

 captured again and again in the neighbourhood of Perth, if 

 not elsewhere, I venture to give a pretty detailed description 

 of it, in order that it may be readily identified by any one 

 coming across it. 



5. annulipes, Zetterstedt, "Ins. Lapp.," 599, 3 (1838); 

 "Dipt. Scand.," ii. 702, 4 (i 843). " Nigra, thorace nigro-ceneo, 

 nitido, scutello flavicante ; abdomine fasciis tribus, prima 

 interrupta, pedibusque, flavis, femorum basi, tibiarum posti- 

 carum annulo tarsisque omnibus et totis, antennisque, nigris ; 

 alarum stigmate nigricante" 



May be easily recognised by its large size, hairy eyes, 

 nearly black, shining thorax, by the distinct flexure of 

 the fourth (third of Schiner) longitudinal vein of the 

 wings, and lastly, as indicated by the specific name, by 

 the dark ring on the hind tibiae. 



Eyes hairy, epistoma yellow, with black middle line and pro- 

 minent knob, cheeks blackish, and, as well as epistoma, covered with 

 pale yellowish hairs, front black, narrowly tomentose on each side in 

 the male, more broadly so in the female, with the hairs entirely 

 black, vertex shining black, especially in the female ; antennae black, 

 or with the least tinge of reddish at base of third joint, arista 

 reddish at the base. Thorax almost quite black, shining, with 

 fulvous hairs on each side, scutellum brownish-yellow, sometimes 

 slightly metallic, covered with black hairs. Abdomen shining black, 



