lVi>i<;titc : Dnyhiun Diptcra. 287 



Fam. lIIl'rOSCID.^. 

 Ornithomyia avicularia L. Bishop Auckland, two. 

 Stenopteryx hirundinis L. Kishop Auckland, one ; Darlinyton, one. 

 Melophagus ovinus L. Gibside. five. 



NOTES. 



Mycetophilidae. I have taken many other species of Sciarci and Myccto- 

 p/tiht, hut I cannot pretend to name them at present. I shall be very 

 ■^lad to submit them to any reader oi this mai^azine who may feel 

 liimself c[ualified to do so. 



Dilophus femoratus My. This is not g-iven as British in Verrall's list, 

 althoui,'-!) he gives liitiiicralis Ztt., which has a black thorax with red 

 humeri. .Mv specimens have the thorax entirely black, and correspond 

 exactlv with both Schiner's and Zetterstedt's descriptions of D. 

 femoratus. 



Orthocladius dolens \\'\k. This is as it stands in V^errall's list, but it 

 should be O. iiivi'ipoiilis Ztt. I feel sure. 



Lonchoptera. The differences between the species are very slight, and 

 I doubt the specific worth of some of the characters. Trilitieata Ztt. is 

 not in the British list, but my specimens have the three broad stripes on 

 the thorax, which, according to Zetterstedt, easily distinguish it from 

 all others. Punctuin Mg. , with yellow thorax, sing-le dorsal line, and 

 dark abdomen ; laaistris Mg., the small species with dark thorax ; 

 trisfis Mg. , the largest of all, with a dark thorax and dark shining- 

 abdomen. 



Dolichopus picipes Mg. I take these to be the species meant -by 

 picipes Mg. in the British List. But if that name is to be restricted 

 to those with very bristly hind metatarsi, then this fly would be 

 D. fas/itosus Hal. 



Syrphus ribesii L. and vitripennis Mg. I entirely agree with Mr. Grim- 

 shaws note in 77if Xatiii'alis/ for 1898, p. 102. And I cannot believe 

 that the minute differences of the 'tiny black bristles' and the dark 

 hind femora in the female constitute any real specific difference. I have 

 females with plenty of black bristles and dark femora, and others with 

 vellow femora and very few black bristles, and there seems to be every 

 gradation between. I do not believe there is a,ny specific distinction. 



Baccha elongata F. There is a considerable variation in the amount of 

 dust on the frons, but there does not seem to me to be any dividing; 

 line, therefore I put them all under elongata. If there be really an 

 ohscuripcnnis some of the above may belong to it. 



Eristalis aeneus Scop. This female is peculiar in having the five I'g/it 

 grrv stripes on the thorax noted by Verrall in his ' Syrphidse,' p. 503. 

 There are also two dark sIatc-co\o\xved, rather broad stripes on each 

 side of the narrow centre light stripe. The two pairs of broad light 

 stripes are broadest in front, disappearing in a point at the suture and 

 reappearing- in a narrow stripe behind, until the\- die out independently 

 a little before the scutellum. 



Myiatropa florea L. As the last two dates are early for this fly, it is 

 only right to say that they were caught in a greenhouse. They are 

 larger and much better developed than the other specimens. The 

 Gibsonees 9 does not exceed 10 mm., the last ? is fully 14 mm. 



Parexorista fugax Rnd. and grossa R.&R. Neither of these is in 

 X'erral's list. The identification is due to Mr. Wainwright, who was 

 kind enough to look over and name a number of my Tachinida; for me. 



Hyedotesia palida F. These males belong to the variety with grey 

 stripes on the thorax and dark marking on the last two abdominal 

 seg-ments. They were fond of resting on Pteris aquilina in a w-ooded 

 g^len. 



1903 July I. 



