all bristly ; the hinder thighs are thickened and their tibiae 

 very much bowed at the base to receive the keel of the thighs; 

 the second joint of the antennae is large, the upper portion 

 lapping over the third joint which has a somewhat transparent 

 dot on the side, which does not seem to have been noticed by 

 Meigen, and the seta is Inarticulate. I could not discover 

 either maxillary appendages or a tongue. Some of the above 

 characters will distinguish Platycephala from Trigonometopus 

 (Pi. 689) and Tetanocera, as well as from Eurina, which 

 is confounded with it in many collections. 



Two species of Platycephala have been found in England. 



1. planifrons, Fab. — Curt. Brit. Ent. pi. 725. — culmorum 

 Fall. 



Deep ochreous : head and thorax thickly covered with 

 black punctures, the former concave on the crown with a 

 black channel down the fore part, and a curved space behind 

 free from punctures : 3d joint of antennae black, except at the 

 base, seta white : thorax with two yellowish stripes down the 

 back, as well as one on each side, margin of scutel pale : ab- 

 domen slightly and sparingly punctured, sericeous, with a ^ew 

 short hairs also, the back greyish-brown, excepting an ochreous 

 line down the middle, the sides of the same colour: wings 

 stained with fuscous, darkest towards the costa, excepting the 

 basal cell : nervures ochreous and brown. 



I have taken this species on sedges and rushes at Whittlesea 

 mere the middle of July ; and at the end of the same month 

 and in September, I have several times found specimens at 

 Blackgang chine, which had the anterior tarsi fuscous, and 

 the line down the body obscure. 



2. urabraculata Fab. — Meig. v. 6. p. 26. pi. 5Q. f. 16. — agro- 

 rum Fall. 



Ferruginous: 2d joint of antennae subulated : a very deep 

 hollow on the crown of the head, black in the centre : thorax 

 thickly and minutely punctured, with 2 ochreous lines on 

 each side, united anteriorly : abdomen fuscous : wings similar 

 to the last species. Length 2^ lines : expanse 5. 



Taken by Mr. Dale in the New Forest and at Charmouth. 



Blysmus compressus, Compressed Rush-grass, from Bol- 

 lington-green, Oxfordshire, was communicated by W. W. 

 Saunders, Esq. 



