178 



[Jiily, 



metathorax light grey; abdomen black, glabrous, and spinose, with setae both on 

 the disc and margin of the segments, and having a band of white reflections on the 

 front margins of the last three rings, which is complete on the second ring, but only 

 marked on the sides of the others ; legs black. Very rare ; I have only seen one 

 example, which I captured at Windermere, in June, 1884. 



Schiner refers the Fabricia facta, of Mcigen, to this genus, and states that 

 Frontina austera, of the same author, is only the female of the same species. I 

 liave a continental specimen of F. austera, which possesses the characters peculiar 

 to the genus Frontina, but those described by Meigen and Walker as belonging to 

 F. pacta are so different (the frontalia of the male being narrow, and the antennae 

 shortened), that I think the two flies cannot be referred to the same genus, or belong 

 to the same species. 



37.— BAUMHAUEEIA, Mgn. 



Gen. c7;.— Head large ; eyes small and nude ; frontalia very wide, 

 and witL the face somewhat swollen ; cheeks sometimes hairy ; an- 

 tenuje long, the third joint being fully six times as long as the second ; 

 facialia ciliated ; wings with the first posterior cell closed at the apex, 

 or, a little, before it. 



This genus bears such a close aiSnity to the former, that I have 

 placed them in juxtaposition, out of their proper order in my list ; 

 their characters are so much alike that it is difficult to know in w^hich 

 to place certain species, thus, F. Iceta is sometimes called a Baum- 

 haueria, and B. marmorata a Frontina : the typical species of the 

 former genus is B. gonicpformis, Mgn., in which the first posterior cell 

 is quite closed, and has a short stalk, it has not, however, been found 

 in Britain. 



B. MAHMOHATA, F. 



T. veriiginosn, Mgn. 



Frontal stripe rufous or flavescent, much narrower than the sides of the fron- 

 ri791 talia, which are very wide, swollen, white, with grey reflections, and armed with 

 July, isy2. fronto-orbital bristles in a triple row ; cheeks large, glistening white, and bare ; 

 antenna very long, with the first and second joints rufous, and the third grey, and 

 nearly eight times as long as the second ; arista thickened nearly to the end ; palpi 

 yellow ; facialia ciliated for two-thirds of the way up ; thorax greyish- white, marked 

 with four stripes (the outer pair being maculiform), and with numerous little black 

 spots, upon which the bristles are seated ; post-sutural outer dorso-central setae three 

 in number ; scutellum grey, with the apex mostly rufous ; abdomen white, tessel- 

 lated with numerous black spots and patches ; and having setae both on the disc 

 and edges of the segments ; wings with the apical cross veins curved, and having 

 the first posterior cell closed at the apex, or, sometimes, slightly open ; legs grey. 

 1 have adopted the Fabrician name, as it has the priority, and is very characteristic. 

 Not uncommon; I have several spc^cimcns bred from Arctiu Caja. 



