NO. 1530. THE DECTICIN/E OF NOR TH AMERICA— CA UDELL. 297 



Deseriptlo)K—\le2id. small, not prominent, no broader than the front 

 of the pronotuni into which it is inserted moderately deep; fastig-ium 

 about one-fourth as l)road as the interocular space, quite prominent, 

 oval above, not sulcate, or very broadly and shallowy so. Eyes small, 

 nearly round, not prominent. Antennae long and slender, three times 

 or more longer than tlie l)ody, the basal segment large, al)out as broad 

 as long and almost as large as one of the eyes. Pronotuni (tig. 6) large 

 and posteriorly much produced over the base of the al)domen, covering 

 the wings; lateral lobes shallow, rarely half as deep as long, posteriorly 

 distinctly sinuate; lateral carinaj sharp and distinct, converging in the 

 anterior fifth and then diverging posteriorly, usually straight behind 

 the point of convergence but sometimes a little,' or rarely considerably, 

 bowed outwards; median carina distinct and persistent but very slightly 

 elevated; pronotal disk inconspicuously ruggose, more distinctly so in 

 the male, transversely a little concave or, more usually, Hat and slightly 

 tectiform, marked at the narrowest point with a faint transverse sulcus, 

 not however severing the median 

 carina; posterior margin broadly 

 rounded; front margin truncate. 

 Prosternum armed with two spines, 

 usually long and distinct but some- 

 times short and blunt. Wings 

 aborted in the female, in the male y ilt.,;y c 



the elytra form well developed, ^---^m>^ \^—-^ ip 



strongly convex tympani, easilv 



^ -^ . . ■ Figs. 6-7. — Nedub.\ carin.\ta. 6, pronotum of 



seen but not projecting bey^ond the male from above. 7, tip of abdomen of the 

 pronotal disk. Legs long and ''^^'^ ^^om above; c cercus. /. p, infra- 



^ . . TERCAL PLATE. 



slender, the posterior femora more 



than two times as long as the pronotum; all the femora unarmed below 

 but above there are a number of sharp, backwardly directed spines, 

 more numerous on the posterior femora; anterior tibia^ armed above 

 on the outer carina with two spines, one basal and one terminal, prob- 

 ably sometimes with a median spine also; on the inner margin the 

 anterior tibia^ generally bears a single apical spine and armed ])elow 

 on both sides with seven or eight spines; intermediate tibite armed on 

 both margins above and below; posterior ti))i{B also armed on ])oth 

 margins "above and below, above with about a dozen stout ones on each 

 margin and below with a few weak slender ones. Abdomen usually 

 somewhat compressed, normally about as wide as the pronotum, dis- 

 tinctly but slightly carinate above. Cerci of both sexes simple, round 

 and tapering to a sharp tip, about four times as long as the basal 

 breadth, often, at least in the female, five times as long; subgenital 

 plate apically narrowly rounded and unarmed in the female, in the 

 male apically truncate and armed with a pair of distinct but short 

 apical styles, the styles usual 1}^ about two times as long as liroad; last 



