﻿G36. 

 lASSUS KETICULATUS. 



Order Homoptera. Fam. Tettigonidae. 



Type of the Genus, Cicada Lanio Linn. 



Iassvs Fab., Curt. — Bythoscopus Germ. — Macropsis Lewis. — Cicada 

 Linn., Fab. 



Antenna inserted in a large cavity on each side the base of the 

 clypeus, not longer than the rostrum, small, divaricating, 2 

 basal joints stout, the 1st subpyriform truncate, 2nd ovate, the 

 remainder forming a setaceous naked seta, thickened and curved 

 at the base, apparently composed of numerous articulations, 

 with a feMr bristles on the back of the basal joints (4). 

 Labrum forming a lanceolate lobe (3). 

 Mandibles and Maxillae very slender setae. 

 Labium shorter than the face, rather thick, formed of three in- 

 distinct joints, basal joint short, 2nd the longest, 3rd short, 

 rounded and pubescent (2). 

 Head very broad and short, the base concave (1 front view, 1* the 

 jwofile) ; face much broader than long ; clypeus small and oblong : 

 cheeks dilated: eyes lateral, semiovate : ocelli 2 placed on the 

 forehead between the eyes, but remote from them and from each 

 other. Thorax transverse-ovate, the base straight, the anterior 

 margin very convex, the sides angulated : scutel large, trigonate- 

 cuspidate. Abdomen moderately long, subconic, the apex cleft above 

 in the males, compressed, with a long ovipositor beneath in the females : 

 (5, the underside). Elytra deflexed in repose, longer than the body, 

 subelliptic, reticulated at the disc and apex, round which there is a 

 narrow margin : wings subtrigonate, elongated with 2 or 3 cells 

 at the apex and 1 or 2 furcate nervures below them, all united to a 

 transverse nervure running parallel to the margin (9*), Legs, an- 

 terior the shortest,^ posterior the longest : thighs, hinder the longest 

 with a few spines at the apex : tibiae, 4 anterior simple, \st pair a 

 little bristly internally (6) ; hinder pair long, serrated, and spined 

 externally : tarsi short and triarticulate, basal joint the longest in 

 the hinder pair : claws and pulvilli rather short and stout. 



Ueticulatus Curt. Guide, Gen. 1051. 12. 



In the Author's Cabinet. 



The exceedingly broad and short heads and equally broad 

 thorax distinguish the group enumerated in the Guide under 

 the name of lasstis, which seems to be synonymous with Bj/- 

 thoscopus of Germar. Mr. Lewis has established two genera 

 from them, Macrojms and Idiocerus^ one of which I shall no- 

 tice shortly in describing our British species. 



