54 



111 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 Fhciiintopota are silent or almost so in their approach; 

 Tabaniis, 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 Macliiiniis atricapillus. 

 Fin. (a small Robber-fi\-), feeding on a male of the present species. 



The geographical range of Chrysops acciitiois 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 \ellow 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 conspicuouslj' )-ellow. 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 frequentl)' it is separate. 



Ne.Kt to Chrysops scpidcliralis, Fabr., C. quadrata is less often met 

 w ilh than any other of the British species of the genus. Colonel 

 Yerbur)' 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 {Rro. E. N.Bloovifield); Lyndhurst 

 and L\ndhurst Road, New Forest, Hants, July 3rd, 4th, and 21st; 



