BRITISH SPECIES OF DIPTEROUS GENUS FANNIA 179 



stripe of the ? distinguishes it at once from any other species. 

 I have also seen this from New Forest (Adams) ; Polton, 

 Aberfoyle, and Comrie (A. E. J. Carter) ; Oxford (Hamm). I 

 have a single $ standing under the MS. name crassipes which 

 I am doubtful about, but I consider it advisable to give a short 

 description of it, so that should it prove to be other than an 

 abnormal specimen of aerea it may be recognised. It agrees in 

 every particular with the foregoing, but the mid metatarsus is 

 barely equal in length to the next two joints, whereas in aerea 

 it is equal to the next three. The hind tarsus in aerea is longer 

 than the tibia ; in crassipes it is shorter and very considerably 

 thickened, in contrast with the normal tarsus of the former. 

 It is possible that this is a malformation, but I consider it at 

 least advisable to mention its occurrence. One <$, Bonhill, 

 25 th May 1908. 



13. umbrosa, Stn., $ . Black; eyes very large, and close together; 



thorax deep black, with little dusting ; abdomen black, brown- 

 grey dusted ; legs black, the thorn at the base of the mid 

 metatarsus inconspicuous ; the bristling of the hind femora 

 separates this species from all its allies, there being about ten 

 equally long, prominent bristles from the middle to the tip on 

 the postero-ventral surface ; the usual bristles present on the 

 tibiae ; wings yellowish, third and fourth veins convergent ; 

 calyptra unequal in size, brownish ; haltercs brownish. 9 

 undescribed. 4 to 4J mm. 



The foregoing abridged description is taken from 

 Stein's monograph. 



14. vesparia, Mde. This species was described by Meade in the 

 Entomologist's Monthly Magazine in 1891, and though its 

 author afterwards wrote a paper on the Anthomyidce (1897) he 

 made no reference to the species. Verrall gives it in italics in 

 his 1 90 1 list of British species, but Stein makes no mention of 

 it in his monograph on the family, 1895. It * s given in the 

 Catalogue of Pahcarctic Diptera, 1 907. Possibly an examination 

 of the type, if it is in existence, will settle whether or not it 

 ought to rank as a species. The chief character which distin- 

 guishes it from coracina, if not the only one, is that given in 

 the table of species in this paper. The flies were bred from 

 pupae found in a wasp's nest. I am inclined to consider it 

 merely as a synonym of coracina. 



15. coracina, Lw., $. Deep black, slightly shining; frons, 



epistome, and jowls projecting a little more than in most 



