138 



[June, 



Trilohapliis caric/s, sp. nov. 



Apteruus viviparous female. — Green to dull yellowisli-green. Eyes deep 

 red and large. Apex of antenuae sliglitly diuky, ako the tarsi aud apices of 



the tibiae. Elongated oval. Head with 

 three large frontal processes, the median 

 one more or less globular, the lateral 

 ones with two hairs each, arising from 

 marked mammae ; the median with four 

 hairs. The short antenuae do not quite 

 reach the ::nd coxae ; of six segments ; 

 ba-al segment much larger than 2nd, 

 with a blunt apical projection on the 

 inner side, with two hairs ; 3rd segment 

 longer than 4th, not quite Si> long as 

 the Gth ; 4th and 5th about equal, the 

 latter with a round sub-apical sen- 

 sorium; 6tli with basal area about as 

 long as oth ; the Hagellum a little 

 longer than the base ; a few faint im- 

 brications on the 6th. Proboscis very 

 short, reaching midway between the 1st 

 and 2nd coxae ; apex black. Tlioracic 

 segments distinct. Cornicles thick, 

 cylindrical, more than half the length 

 of the antennae, constricted at apex, and in some slightly swelling towards 

 the apex on the inner side, with marked imbrication of peculiar form and 

 with crenulated edges. Cauda prominent, about one-third the length and 

 scarcely as wide, to as wide, as the cornicles: finely spinose, with two hairs 

 one side, one the other. Anal plate bluntly triangulate, spinose, with a few 

 hairs. Legs short ; the hind pair not reaching to the end of the boJy; tibiae 

 and apices of femora with fine hairs. The thick cornicles project inwards and 

 only just I'Xtend beyond the tip of the Cauda. 



Length I'o to 2 mm. 



roOD-PLA>'T. Carex remota. 



Locality. Near Bangor, X. "Wales {€'. L. Walton). 



Obseetatioxs. Described from a number of apterous viviparous 

 females and young, found by Mr. C. L. Walton on Carex remota 

 growing on the banks of the Ogwen, near Bangor. It is a very strange 

 looking Aphid, and bears a general resemblance to Atheroicles and 

 Thripsaphis, but the processes on the head clearly place it, in con- 

 junction with the large cornicles, in the Macrosiphinae. It is one of 

 the most marked of our British Aphides that I have seen.* 



Wye, Kent. 



Fig. 2. — Trilobaphis cai-icis, sp. nov, 

 apterous viviparous 5 . (x3S.) 



* Another new British Aphid genus and species, Lainyia psa7)imae. from Littlestone, Kent, has 

 recently been described by Mr. Theobald (Bull. Ent. Ees. xii, pp. 429 & 430, Feb. 1922.— Eds. 



