350 HETEROMERA — MORDELLIDAE. 



at base and apex, hinder tibiae broadly at base yellow- 

 brown, L. 1| — 2 1. Not common. M. humeralis, Lin. 



2, Head reddish-yellow-brown. 



Eeddish-yellow-brown ; eyes black ; apex of elytra and 

 of abdomen often brown ; apex of antennae brown. Thorax 

 broader than long, narrowed in front, its process over scii- 

 tellum truncate ; elytra almost three times as long as 

 together broad at base, not much narrowed behind ; an- 

 tennae threadlike. L. If 1. Not common. 



M. hrunnea, Fab. 



II* Antennae entirely reddish-yellow. 



Black ; mouth, antennae, a more or less distinct spot at 

 anterior angles of thorax (or almost the whole of its side 

 margin), a humeral spot on elytra, gradually narrowed and 

 extending beyond middle and the legs reddish-yellow; pos- 

 terior femora sometimes dark in middle ; pubescence fine, 

 gray. Antennae very feebly sawlike ; anal process long, 

 pointed. L. 1^ — If 1. Not common. 



M. lateralis, 01. 



H, Thorax entirely black. 



a. Process of thorax over scutellum slightly emarginate. 



I, Anal spine long. 



Black, with moderately close, silky pubescence. Thorax 

 as long as broad, not narrowed in front, base strongly bi- 

 sinuate, posterior angles acute ; elytra three times as long 

 as together broad at base, parallel-sided nearly to. apex ; 

 antennae scarcely sawlike. L. 1\\. Bather common. 



M. iDumila, Gyll. 



II, Anal spine short. 



Black, not very shiny, with silky pubescence. Thorax 

 with posterior angles right angles, a little shorter than in 

 M. pumila, base less strongly sinuate. L. 1| 1. Scarce. 



M. hrevicauda, Boh. 



b. Process of thorax over scutellum broadly rounded. 



Black, with silky pubescence ; mouth and base of an- 

 tennae pitcli-brown. Thorax about as broad as long, base 

 , slightly bisihuate, posterior angles almost obtuse ; anal 



