170 THE ENTOMOLOGIST. 



where it is far from rare. Known previously from South France 

 only, and deemed a " lost " species. 



This list must not be considered to exhaust even the rare 

 species of our counties, not to mention our only too common 

 ones. A joint paper by my friend Mr. Bagnall and myself will 

 deal with other forms later. 



Aleyrodidce. 



TetraUcia ericte, Harrison (new genus and species, Vasculum, 

 June, 1917, p. 60). This new form turned up on Erica tetralix, 

 on Waldridge Fell, in North Durham, July, 1916. It is a very 

 distinct species in every stage, and the following is a copy of 

 the original description : 



Genus Tetralicia. 



Fore wings provided with radial sector only, with a slight flexure 

 in the middle ; whole vein subparallel to the inner margin of the 

 wing. Cubitus, especially in certain females, sometimes suggested 

 by a fold or by a cessation of the wing granulations. 



Male slightly less than the female. Both sexes with 7-jointed 

 antennae. Male antennge rugged and fairly long ; those of female 

 less rugged and relatively shorter. In the male the third joint is 

 the longest, and is subequal to the total length of the fourth, fifth, 

 sixth, and seventh ; the same joint is likewise the longest in the 

 female, but is longer than the total of the fourth, fifth, sixth, and 

 seventh. In the male the fourth joint is the shortest and in the 

 female the sixth, Male claspers fairly long and broad; penis slight. 



Pupa case with practically no waxy secretion. 

 Both larva and pupa are extremely elongated. 

 Type — ericce, Harrison. 



Tetralicia erica, sp. no v. 



Characters of the genus with the following additional 

 features : 



Ad2iU male. — Length, -9 mm. 



General coloration bright yellow. Head, legs, and genital claspers 

 smoky black, that of the claspers often very intense. Thorax, a 

 mixture of yellow and black merging imperceptibly into each other. 

 Below and laterally the abdomen is bright yellow : above slightly 

 smoky. Fore wings rather long, rounded terminally ; in colour 

 grey- white — not the pure white of Aleyrodes proletella — unspotted, 

 granulated. Lower wings more triangular, termen rounded. Eadial 

 sector central. Margin of all wings thickened, toothed, and slightly 

 bristly. Antennae ochreous. Eyes dark reddish - purple, very 

 slightly reniform. 



Adult female. — Length, 1-2 mm. 



Like the male but wings broader. Genitalia, except basally, yellow. 

 Antennae slighter. 



