ACVT*TnOLF,PIS. ^{15 



laminate node having a tooth or spine on each side above : abdomen 

 broadly oval, rather acutely pointed at apex. 



5 . Liirge propoi tionately to the g ; head triangular, very bi-oad 

 posteriorly ; clvpeus broad and high, convex and strongly vertically 

 carinate. Thorax massive, the mesonotuin very large, gibbous in 

 front, overhanging the pronotum, which forms no portion of the 

 dorsum; scutellum subtriangular, wide at base; mesonotum and 

 scutellum obscurely longitudinally carinate in the middle. Node 

 of the pedicel pentagonal, the upper border deeply cmaroinate : 

 abdomen massive. 



(5'. Head small in proportion to the thorax, the latter very inas- 

 sixe and broad ; mandibles narrow, porrect ; eyes very lai ge, reaching 

 down to the base of the mandibles : mesonotum large, slightly 

 convex, not carinate as in the 5 ; wings lacteous, hyaline, broad 

 and long, the apex reaching considerably beyond the apex of the 

 abdomen. 



A'c^ to till' Sjucies. 



<(. Scape of tintenua' remarkably long, ox- 

 tending for more than half its length 



beyond the top of the head .L. fraiu-ufddi. \>. •"510. 



h. Scape of antennas shorter, extending- be- 



yund the top of the liead by not moiv 



than one-third of its length. 



a , The upper lateral angles of the node of the 



pedicel surmounted by long, tine, acute 



vertical spines. 



a-. Abdomen purplish brown or black, 



without yellow markings .1. opaca, p. 3l8. 



b-. Abdomen dull black, the basal segment 



above and in front brownish yellow. . A. pulchella, p. -JIS. 

 b' . The upper lateral angles of the node of 

 the pedicel furui,<hed with short thick 

 spines or teeth pointing more or less 

 outwards, or with the upper border of the 

 node simply emarginate. 

 «-. Head, thorax and abdomen abundantly 

 pilose. 

 «^. Hend punctured, opaque ; head and 

 abdomen reddish brown, thorax and 

 a spot at the base of the abdonieu 



yellow A. fcrfiutoni. p. 3 UK 



//'. Head highly polished and shining, 

 head and abdomen black. 

 «'. Head without the mandibles about 



as broad as lonp:, thorax black . . A. rajM-ntiis. ]>. oK). 

 b*. Head without the mandibles dis- 

 tinctly longer than broad, thorax 



reddish yellow /. itt'idc^/a. p. :J17. 



b-. Head, thorax and abdomen smooth, 

 without haivs except at the apex of 

 th(! abdomen i. si/nplc.r, p. -MT. 



