4<D2 ENTOMOLOGICAL NEWS. [Nov., '14 



Genus Argante. 



1867. Stal, Ofv. Vet-Ak. Forh. p. 558. 

 A. incumbens Germ, in Silb. Rev. Ent. ITT, p. 239. 1835. 



A series of eight examples are in the Uruguayan National 

 collection, from Uruguay. It is found in the month of May, 

 on the leaves of Eryngium agamfolium Grb. 



A. tremolaris n. sp. 



Black, smaller, more depressed, and much more slender than in- 

 cumbens. Head broad, snort, apex rounded transversely, much re- 

 tracted forming a sharp edge ; ocelli pale, between themselves and the 

 eyes doubly distant; punctured. Prothorax armed in front with a 

 strong, dependent, curved horn extending forward and downward 

 which is broadly spatulate at apex; the spatulate apex is furnished 

 with a well marked median carina ; the edge on each side is elevated 

 which forms a deep channel on each side ; median carina prominent 

 to a line passing between humeral angles, thereafter nearly obsolete, 

 the lateral carinse also extending to humeral angles ; prothorax con- 

 vex, laterally somewhat depressed or flattened ; posterior process broad 

 at base, convex, gradually decreasing in breadth to apex which ex- 

 tends a trifle beyond tip of abdomen, strongly punctured. Tegmina 

 rather narrow, blackish brown almost to extremities, where they are 

 narrowly yellowish white and transparent; wings have four apical 

 areas, base of second truncate. Legs concolorous, front tibi?e not di- 

 lated. Female similar to male, larger, and median carina percurrent. 



Long, from apex of iront horn to extremity of tegmina 8, lat. inter 

 hum. ang. 2 mm. 



Described from one male and four females. 



Types, in Uruguayan National collection, and coll. F. W. G. 



Hob. Piriapolis, Uruguay. Collector, ]. Tremolares. 

 Feeds on Syringium sp. 



This species differs from incumbens in the absence of 

 a median carina on the posterior prothoracic process of the 

 male, broad spatulate form of the apex of the front horn, 

 in the elevated lateral edges toward the apex which equal the 

 median carina; in the tegmina being very narrowly white at 

 extremities, and black base of clavus. 



So long ago as the year 1835 Germar, and later Berg, men- 

 tioned the spatulate form of the front horn in some of the 

 examples labeled incumbens, and doubtless had one of this 



