LErXOCERID^. 69 



b. Last joint of the maxillary palpi shorter than the precediug ; 



first tiiinly pilose. Posterior tibial with long spurs at the 



tips. L. filosus. 



B. First joint of the maxillary palpi smaller in proportion, hardly 



half as long as the second, which is as long as the third or 



somewhat longer ; last joint longer and more slender than the 



preceding. 



a. Fore-tibia; with little spurs at the tips, those of the hinder 



tibiffi somewhat larjzer. L. 3-punctatus, bifasciatus, senilis. 



b. Spurs at the tips of all the tibiae equal in size, but the hind- 



tibiae have a single little spur somewhat above oue-filth of 

 their length. L. gracilis, princeps, fennicus {Fabr. — uni- 

 guttatus, Pict.), bimaculatus, bilineatus, 4-fasciatus, mi- 

 nutus. 



53. Leptocerus concolor. 



Fuscus ; corpore supra cum alls anticis fulvo-hirto ; antennis pai- 

 pisque nigris, articulo \o lUriiisque organi pedihusque fiavis . 



Mystacides concolor, Burm. Handb. Ent. ii. 2, 919, 3, 



Germany. 



54, Leptocerus albicornis. 



Fusco-niger ; antennce corpore cum alls triplo longiores, apice 

 niie(C ; pedes diluiiores. 



Mystacides albicornis, Burm. Handb. Ent. ii. 2, 918, 1. 



Brazil. 



55. Leptocercs (jracilis. 



Testaceus ; antennis tarsisque fuscis, illis apice albis, dorso alis- 

 que pilosis, pilis testaceis cum albis intermixtis appressis 

 nigrisque longiorihus patentibus. 



Mystacides gracilis, Burm. Handb. Ent. ii. 2, 921, 12. 



Brazil. 



56. Leptocerus PRiNct:ps. 



Fulvo-fuscus ; anterinis apice albn annutatis ; pedibus cinereo -testa - 

 ceis ; dorso alisque j)ilosis, pilis alarum fuscis etjlavis in ma- 

 culas alternas congcstis. 



Mystacides princeps, Burm. Handb. Ent. ii. 2, 921, 13. 



Brazil. 



