1887.] 207 



to these hooka but more inward and more concealed are two more 

 black hooks, and beneath the lamellae are two longish, black, thin, 

 sickle-shaped processes (not nearly so long as in M. hijilatits) ; lower 

 lamellae long and narrow ; antenna all yellowish, joints oval, verticils 

 short ; frons blackish-grey, wings smoky-yellowish. This species is 

 common, and I have taken it in Hants, Sussex, Kent, Cambridge, Isle 

 of Arrau, and at Loch Maree. 



M. hifilatus, Ver. : since I described this in last February's num- 

 ber of this Magazine (vol. xxii, p. 199), I have frequently met with it, 

 and am somewhat more suspicious that it may be Meigen's M. griseus, 

 as it is much less ochreous than the others, it is also decidedly the 

 largest. I have only caught it in Hants, Cambridge, and Suffolk (my 

 own garden), but believe it is quite common. 



RHYPHOLOPRUS. 



1 (6) Last vein straight, short ; joints of male antennse petiolate. 



2 (5) Brownish-grey. 



3 (4) Thorax with a central dark line lineatus,'M.g. 



4 (3) Thorax not striped noduloms, Mcq. 



5 (2) Ochreous similis, Stseg. 



6 (1) Last vein sinuated, long ; joints of male antennee ovate. 



7 (8) Thorax with four tolerably distinct stripes, tlie middle two uniting behind ; 



wings considerably mottled varius, Mg. 



8 (7) Thorax indistinctly striped ; wings less mottled hcBtnorrkoidalis, Ztt. 



Three of the above species I added to our lists last January, and 

 I took them again last summer ; B. varius was abundant at Prince- 

 town, Dartmoor, and JR. similis I met with rarely near Inverness and 

 Inveran, it is a pretty, very distinct species. 



This genns requires considerably more study ; we have certainly 

 two common species under R. nodulosus, but which is Macquart's spe- 

 cies I do not know ; then there is the species I mentioned last Feb- 

 ruary which Mr. Cooke sent me as Erioptera varia, but which has the 

 last vein straight and short ; and on June 4th, 1886, 1 caught at Frant 

 one female of a large species with a discal cell, probably B. penfago- 

 nalis of Loew, but I could not find more, though I closely searched. 



ERIOPTERA. 



The six species in my list divide themselves into two groups, the 

 first four being wholly or largely ochreous, while the last two are 

 greyish or blackish ; of the ochreous species E. macroplithalma, Lw., 

 now first recorded as British, is a large yellow species with hlack 

 palpi and large eyes, its abdomen is longer and narrower than that pi 



