Mr. A. H. Haliday on new British Insects, 189 



Limosina arcuata, Macq. C. 1350, 23 c . 



Previously described by Fallen under the name fontinalis, 

 Suppl. 16. 



The new species of the Hydromyzidce indicated in the Guide 

 will be noticed in a more general memoir on that tribe. 

 Hemiptera. 

 Atheroides, C. 1046 b . 

 Corpus apterum lineare deplanatum, abdominis segmentis inter- 

 mediis connatis, spiraculis penultimi simplicibus . Antennae dimidio 

 corpore breviores, 6-articulatse, articulo ultimo capillaceo attenuato. 

 Promuscis thorace brevior, mesosterni sulco incumbens. Femina 

 vivipara. 

 Atheroides serrulatus, C. 1046 b . 1. 



A. rugulosus subglaber, capitis et segmenti ultimi marginibus 



denticulatis setosis, m.f. Long. 1 lin. 

 On grasses ; common in autumn on the sea -coast at Holy wood. 

 Atheroides hirtellus, C. 1046 b . 2. 



A. nitidus dorso undique hispidus, antennis pedibusque vage pilo- 

 sis,/. Long. 1 lin. 

 On Juncus articulatus, Holywood. 

 Eriosoma pallida, C. App. 279. 



This species, like E. ulmi-gallarum, inhabits the leaves of 

 the mountain elm ; its follicles are more solid and imbedded 

 in the leaves near the base of the midrib, not elevated on a 

 foot-stalk. The apterous female is white. The follicles burst 

 about the beginning of August. The society is then very nu- 

 merous, and the farinose secretion more abundant than in the 

 former species. The winged insects are glossy bluish black, 

 with the legs rather paler : collar dirty yellow, with a dusky 

 transverse line : a row of lateral dots on the abdomen and its 

 underside are greenish yellow, as also the promuscis. The 

 nervures of the upper wings nearly as in E. uhni-gallarum, 

 but the lower have two nervures (in place of one) springing 

 from the subcostal. The joints of the antennae are of differ- 

 ent proportions, the sixth being rather longer than the fifth. 



Obs. The genus Eriosoma of Leach was made up of very 

 different forms. Several groups have been already distin- 

 guished, viz. 1°. Phylloxera, Fonsc. If the minute species 

 with incumbent wings which occurs on the oak (noticed by 

 Walker, Ent. Mag. iii. 407) he the Phylloxera roboris, the de- 



