54 
In England, on the whole, this is probably the commonest species 
of its genus, although in some localities its place appears to be taken 
by Chrysops relicta. Colonel Yerbury writes that " the genus Chrysops 
does not seem to be plentiful in Scotland " ; and he further adds that 
" Chrysops and Hcematdpota are silent or almost so in their approach; 
Tabanus, on the other hand, announces its arrival with a more or 
less loud hum." At Brockenhurst, in the New Forest, on July 14th, 
1894, Colonel Yerbury captured a female of Machimus atricapillus, 
Fin. (a small Robber-fly), feeding on a male of the present species. 
The geographical range of Chrysops ccecutiens extends throughout 
Europe to Siberia ; the Continental series in the Museum includes 
specimens from France, Germany, Bohemia and Corsica. 
Chrysops quadrata, Mg. 
Plate 27. 
In the male of this species the basal half of the abdomen shows 
a considerable amount of yellow at the sides, though the median 
quadrate black spot on the second segment, which is a continuation 
of the black area on the first, is very much larger than in the female, 
and nearly reaches the hind margin. As in the female, the hinder 
portion of the third segment, and sometimes that of the fourth as 
well, is conspicuously yellow. The median black spot on the second 
abdominal segment of the female is variable in shape as well as in 
size, being sometimes nearly square and sometimes more or less dis- 
tinctly cordate. In the specimen illustrated it is connected with the 
blotch on the first segment, but more frequently it is separate. 
Next to Chrysops sepulchralis, Fabr., C. quadrata is less often met 
with than any other of the British species of the genus. Colonel 
Yerbury writes that it is " as a rule rare, but is the common form in 
Denny Wait in the New Forest." The Museum series at present 
consists of one male and eight females, from the following localities : — 
Guestling, Hastings, Sussex, 1892 {Rev. E. N. B loo infield); Lyndhurst 
and Lyndhurst Road, New Forest, Hants, July 3rd, 4th, and 21st; 
