TRAVAUX INÉDITS. 141 



peo, scapo subtus, flavis; flagello subtus fulvo; clypeo 

 latissime truncato. — Long. 7 mill. — Mexico. 



Subgenus Epipona, Shuck. 



34. 0. dilectus, Sauss. — Niger, punctatus, fusco hir- 

 sutus; frontis macula, puncto postoculari, tibiis, tarsis 

 abdominisque segmentorum limbo, sulfureis; ultimis tan- 

 tum fascia abbreviata flava; alis subhyalinis; tegulis fusco 

 et flavo maculatis. — d Clypeo flavo, valdebidentato, ore 

 et antennis subtus flavis; femoribus intermediis tridenta- 

 tis. Long. 9 mill. — America borealis. 



Genus PTEROCHILUS, Latr. 



35. Pt. aztecus. — Validus, niger, tenuissime puncta- 

 tus; capite et thoracefulvo-lanosis; abdomine ovato, ore 

 antennarum basi et pedibus rufis ; clypeo flavo, apice 

 grosse punctato, bicarinato, infra médium nigro bimacu- 

 lato; puncto postoculari, maculis 2 pronoti, postscutello 

 et abdominis segmentorum limbo, flavis ; segmentis 1°, 2° 

 utrinque macula rufa ; alis subinfuscatis, costa basi fer- 

 ruginea; tegulis rufis. $ — Long. 16 mill. — Mexico. 



36. Pt. mexicanus. — Niger, fulvo-hirsutus; ore, cly- 

 peo, macula frontali, orbitis partim, antennis basi, pro- 

 noto, lineis 2 mesonoti disci, tegulis, maculis pleurarum, 

 scutellis metanolo utrinque pedibusque, rufis; abdomine 

 rufo, segmentis flavo-limbatis, 1°, 2° basi nigris; alis in- 

 fuscatis, violascentibus. ? — Long. 16 mill. — Mexico. 



Genus ALASTOR, Lepel. 



Subgenus Alastoroides, Sauss. 

 Abdominis primo segmento sutura transversa instructo. 



37. A. mexicanus. — Gracilis, niger, crasse punctatus, 

 pronoto lato, biangulato; metanolo valde rugoso, pone 

 postscutellum producto, poslice valde foveolato; foveolae 

 marginibus superne semicirculariter arcuatis, acutissimis, 



