36 
The smallest specimen of this species in the Museum collection, 
a female taken in the Avon Valley, S. Devon, by Lieut.-Colonel 
Yerbury, on June 19th, 1896, measures 8 mm. in length; the largest 
specimen, a male taken by the writer at Gravesend, Kent, on June 
28th, 1894, is 11 mm. long, exceeding the largest British example of 
H. pluvialis by 1 mm. The Museum series of H. crassicornis is from 
various localities between and including Glen Avon, S. Banff- 
shire, N.B. ( W. R. Ogilvie Grant), and Avon Valley, S. Devon 
(Lieut.-Colonel Yerbury) ; the dates of these specimens range from 
May 24th (Avon Valley, S. Devon), to July 27th (Gravesend : E. E. 
Austen). There are also Irish examples from Glengariff, Co. Cork, 
June 1 2th and 14th, 1901 {Lieut.-Colonel Yerbury) ; and Leenane, Co. 
Galway, July 14th, 1892 (E. E. Austen). It is impossible to say any- 
thing as to the range of this species outside the British Islands, since 
at present the Museum possesses no examples from abroad. 
With reference to this and the foregoing species Colonel Yerbury 
writes : — " Though common in Scotland, these species are not such 
pests there as in the south of England. As an instance of the numbers 
in which they are sometimes met with, the following extract from one 
of the writer's old diaries may be quoted : — " Loddiswell, S. Devon, 
June 30th, 1896, Hcematopota galore: killed forty-seven flying 
round me." 
Haematopota italica, Mg. 
This species can at once be distinguished from either H. pluvialis 
or crassicornis by the pale femora and the greater length of the 
antenna?. The largest of three females of H. italica in the old 
Stevensian collection of British Diptera, which is unfortunately 
entirely without locality labels, exceeds in size any British specimens 
of H. pluvialis or crassicornis in the Museum series, and measures 
12 mm. in length, exclusive of the antenna;, which are 2\ mm. long. 
In the British Islands, so far as our present knowledge goes, 
Haematopota italica would appear to be much more rare and local than 
either of the other indigenous species of this genus. The only 
modern British specimen in the Museum collection is a female, 10 mm. 
