LITOSOMIDJE. 339 



lowisli; extreme apex frequently piceous; tarsi yellowish-brown; 

 3rd joint and claws brown. 



Abdomen green ; underneath somewhat shining, and clothed with 

 yellowish-white hairs. 



Length, 2| 2f lines. 



A very abundant species, on alders, at Lewisham, in July, in com- 

 pany with L. nassatus. 



Species 5. LITOSOMA VIRESCENS. 



cJ elongai 3 ; ? subelliptic. Dull green, clothed with short, white 

 hairs, intermixed with longer, somewhat erect, black ones. 



Head. Grown with a depression in the centre. Antennae greenish- 

 yellow; 1st and 2nd joints clothed with very short black hairs, apex 

 of the 1st with 2 or 3 longer, erect ones ; 3rd and 4th, and apex of 

 the 2nd, brownish. Rostrum yellowish ; tip piceous. 



Thorax. Pronotum with a transverse channel behind the anterior 

 margin, on each side its centre a deep fovea ; hinder angles raised ; 

 posterior margin straight in the middle, rounded towards and at the 

 hinder angles ; disk slightly convex ; Sewtelltvm convex, level with 

 the clavus. Elytra somewhat diaphanous ; Clamis slightly convex ; 

 Membrane blackish, with a purple tinge, iridescent ; outer cell-nerve 

 black ; inner one and apex yellow. Legs greenish, clothed with 

 short, whitish hairs ; tibiae with longish, fine, somewhat spinose, 

 brown hairs ; tarsi brownish-yellow ; 3rd joint and claws piceous or 

 black. 



Abdomen ; underside greenish-yellow, clothed with fine white hairs. 



Length, 22^ lines. 



This sp icies is very closely allied to L. concolor, but may be easily 

 separated from it by its duller appearance, the dark outer cell-nerve, 

 and the yellow apex and inner cell-nerve. Like the other species of 

 the genus, it changes very much in colour after death. The head 

 becomes yellow, with a transverse brownish streak on the crown, 

 next the hinder margin of the eyes ; anterior portion of the thorax, 

 scutellum, anterior margin of the corium and cuneus, more or less 

 yellow ; in one specimen, except the- membrane, the entire insect has 

 become pale brownish-yellow, with a few black spots next the poste- 

 rior margin of the pronotum. 



