1881. j 51 



Head small, received into, and exactly adapted to, the front of the prothorax. 

 Antennae short, and rather slender, joints 3 — 6 small, and so closely applied to one 

 another as to be scarcely distinguishable ; joints 7 — 11 a good deal broader than the 

 preceding ones. Middle of pronotum prolonged behind, and its apex with a small 

 deep notch, adapted to the narrow, small scutellum. The coxse all very widely 

 separated, the anterior ones very near the front edge of the prosternum. The pres- 

 ternum is flat along the middle, and tbe mesosternum is elevated in the middle so as 

 to form a short, very broad process, connected with the prosternum by a quite straight 

 transverse suture, the two parts being so closely applied together as to appear one ; 

 this raised portion of the mesosternum is quite continuous in plane with the 

 metasternum, and thus the body along the middle line is very consolidated : the 

 1st ventral segment is large, the 2nd very short, the sutures between 1st and 2nd, 

 and 2nd and 3rd segments quite straight, the two following sutures strongly arcuate, 

 so that the 3rd segment appears quite divided in the middle, 5th segment large, with 

 a broad shallow impression extending along the middle. Pygidium exposed. 



Thornhill, Dumfries : 

 May, 1881. 



NOTES ON THE BRITISH BYTHOSCOPIBJE. 

 BY JAMES EDWARDS. 



The fact that certain species in this group, and more particularly 

 in the genus Pediopsis, are not so well defined as could be desired, 

 induces me to offer to the readers of this Magazine the result of my 

 own observations in the form of a synoptical table of all the species 

 at present recorded as British, and notes on some of the more obscure 

 species. My object in so doing is to call attention to these insects, 

 with the view to their being more extensively collected, as it is im- 

 possible to form any adequate idea of the limits of a species except 

 by studying a series of examples. 



The Bytlioscopidm may be easily distinguished from all other 

 British Homoptera by the antennae being inserted between the eves 

 and the ocelli situate on the frons. 



TABLE OF OENEEA. 



(6) 1. Anterior margin of crown broadly rounded. 

 (5) 2. Sculpture of pronotum distinct. 



(4) 3. Species dirty white, with black or fuscous markings Agallia. 



(3) 4. Species green, reddish-testaceous, or bluish-green Maceopsis. 



(2) 5. Pronotum not perceptibly sculptured Idioceeus. 



(1) 6. Anterior margin of crown obtusely angular. 



(8) 7. Sculpture of thorax transverse Bythoscoptjs. 



(7) 8. Sculptui'e of thorax running obliquely from the central line 



of thorax to its margin Pei.'IOPSIB. 



