i9or.j 245 



one was seen by liini there, tliouo;h unfortunately it \va^< not secured, 

 it is pi'obable that ab. criUlwelli occurs in that locality regularly but 

 very sparingly. 



Norden, Corfe Castle : 



Heptemher 'oth, 1907. 



IDIOCERUS SCURRA, Gbkm. : A Sl'EOlES OF ROMOPTERA NEW 

 TO THE BRITISU LIST. 



BY E. A. BUT LEU, B. Sc, F. E. S. 



1 am glad to be abbs to announce the addition of this fine species 

 to ihe list of British Ildinuptcra. J)uring the latter j)art of Septem- 

 ber 1 took a number of s|)ecimens on some Lombardy poplars growing 

 on a piece of waste land atljoining my garden. Mature examples of 

 both sexes were found, but some s|)ecimens were still nymphs even at 

 so late a date. /. scurra is pretty generally distributed in the Palse- 

 arctic province, having been recorded from almost all the countries of 

 the continent, except Scandinavia, as well as from the Caucasus, 

 Turkestan, and 'I'unis. It is said to occur on Snlix and Populus from 

 April to October. It is easily distinguished from our other British 

 exponents of the genus by its strongly rugose fore-parts. The ? is 

 also a larger and more robust insect. The antennae of the ^ lack the 

 OTal plate which characterises so many species of the genus. In the 

 list of species /. scurrn is placed at the head of the genus. The 

 following description will enable the species to be recognised: — 



Crown, frons and pronotuiu in both sexes strongly rugose transversely. 



$ dirty brownish-yellow, with a variable amount of black markings. Frons 

 with an irregular dark streak between the eyes, which, however, is often indistinct. 

 Scutellum with a black triangle in each basal angle, and a forked black spot between 

 them. Veins of the elytra sometimes marked with black streaks at irregular in- 

 tervals, often almost concolorous. The transverse vein sometimes makes with the 

 adjacent parts of the brachial and tiie lower branch of the cubital a distinct 

 black H- Apex of the anal vein white. Abdomen black above, yellowish beneath. 

 Legs pale, tibiae outwardly with a black stripe. 



$ of a uniform rust-brown colour, without black markings. Traces of irregular 

 yellowish spots on the pronotum. Apex of anal vein white. Abdomen above black, 

 beneath pale yellow. Other varieties of coloration are described from continental 

 specimens, but mine are all as above. Length, 6^ — 7j mm. 



Kab. : Lombardy poplar. Crouch End, London. 



I have to thank Mr. James Edwards for kindly confirming my 



identification of this species. 



56, Cecile Park, Crouch End, N. : 

 October 8th, 1907. 



