LEPTOCEEID^E. 69 



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

 first thinly pilose. Posterior tibiae 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 

 some what longer ; last joint longer and more slender than the 

 preceding. 



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



tibiae somewhat larger. L. 3-punctatus, bifasciatus, senilis. 



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



tibiae have a single little spur somewhat above one-fifth of 

 their length. L. gracilis, priuceps, fennicus (Fabr. uni- 

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

 nutus. 



53. LEPTOCERUS CONCOLOR. 



Fuscus ; corpore supra cum alis anticis fulvo-hirto ; antennis pal- 

 pisque nigris* articulo lo utriusque organi pedibusque flavis . 



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

 Germany. 



54. LEPTOCERUS ALBICORNIS. 



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

 nivece ; pedes dilutiores. 



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

 Brazil. 



55. LEPTOCERUS GBACILIS. 



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

 que pilosis, pilis testaceis cum albis intermixes appressis 

 nigrisque longioribus patentibus. 



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

 Brazil. 



56. LEPTOCERUS PEINCEPS. 



Fulvo-fuscus ; antennis apice albo annulatis ; pedibus cinereo -testa - 

 ceis; dorso alisque pilosis, pilis alarum fuscis et flavis in ma- 

 culas alternas congestis. 



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

 Brazil. 



