40 icn>"EUMOxiD^. 



8 (9) Clypeus as long as face; nervellus [p. 49. 



entirely wanting (Edematopsis, Tschek, 



9 (8) Clypeus shorter than face ; nervellus 



distinct. 

 10(11) Face transverse; terebra nearly as fp. 51. 



long as abdomen AciExiXKLLUS, gen. iiov.^ 



11 (10) Face not transverse ; terebra shorter 



than abdomen. 



12 (l.'j) Metathoracio spiracles circular ; 



basal segment of abdomen simple. Thymaris, Forst., p. 52. 



13 (12) Metathoi'acic spiracles linear ; basal [p. 54. 



segment of abdomen intumescent. Boloderma, gen. nov., 



14 (7) Areolet distinct and elongately 



petiolate Tanera, Cam., p. 56. 



Genus AC^NITUS, Latr. 

 Acoenites, Latreille, Gen. Crust, et Ins. iv, 1809, p. 9. 

 Genotype, Ichneumon dubitator, Pz. 



Head ti'ansverse, subbuccate, and not narrowed behind the oval 

 and entire eyes ; clypeus sliort and transverse, deeply and senii- 

 circularly separated from the square face, the apical margin 

 subtruncate and centrally reflexed ; mandibles longitudinally 

 striate, usually apically bifid with the upper tooth more obtuse ;. 

 ligula exserted ; antennal scrobes deeply impressed ; genrJ costa 

 iuflexed. Antenna; filiform, as long as or rather longer than 

 half the body. Thorax stout and strongly convex, with the 

 notauli very distinct ; mesosternum short, ^vith indications of 

 lateral sulci ; metathorax sliort and rugose, with often indistinct 

 area?, spiracles large and elliptic, or linear. Abdomen smooth, as 

 long as head and thorax, somewhat narrower and subcompressed 

 apically, subsessile, convex and oblong, more constricted and 

 longer in c? than in $ ; basal segment smooth and sub- 

 canaliculate, hardly dilated apically, narrower in J ; sixth of 

 5 ventrall}^ concave and elongately acuminate ; terebra from, 

 about half to 'fully length of body. Hind legs elongate and 

 incrassate, with the tarsal claws large, curved, and not pectinate ; 

 front tibi?e with one s])ur. Wings with no areolet ; the upper 

 pair with basal nervure perpendicular and not curved, fenestrse 

 large and nearly confluent ; lower ones \\ith the first recurrent 

 postfurcal or subopposite. 



lianr/e. India, Africa, Europe and North America. 



Gx'avenhorst has called attention to the relationship of this 

 genus with Lissonota, Coleocentrns, Arotes, and CoUyria. It is, 

 however, abundantly distinct from any of these, and probably most 

 closely related to Lampronota, though the superficial resetublance 

 to the Braconidous genus Helcon is, as remarked by Haliday (Ent. 

 Mag. 1830, p. 143), curiously striking. Its species are known to 

 prey upon the lignivorous Lepidopterous larvae of the SESiiDyE,. 

 and the imagines are attracted to umbelliferous flowers. 



