rtranCtAlia. 313 



of male with two teeth on inner-side. L. 6 — 7 1. Eather 

 common. S. arm at a, Herbst. 



II. Sides of thorax rounded in middle. 



Black ; elytra with four red-yellow bands ; part of base 

 of abdomen and the legs (except apex of femora and tibiae 

 on hinder pairs) reddish-yellow ; apex of antennae lighter 

 than base. L. 5 — 6 1. Bare. S. attenuata, Lin. 



J5. Elytra unicolorous black or reddish-yellow. 



a. Head and thorax reddish-yellow. 



Eeddish-yellow ; elytra black or reddish-yellow ; breast 

 black ; antennae black toward apex. Thorax as long as 

 broad. L. 5 1. Eare. S. rev est it a, Lin. 



&. Head and thorax black. 



Black, shiny ; part of abdomen reddish ; legs pale yel- 

 lowish. Thorax longer than broad, much narrowed in 

 front. L. 3| — 4 1. Not uncommon. S. nigra, Lin. 



C Elytra reddish or yellow-brown, with suture and apex 

 black. 



Black (except elytra) ; head and thorax dull. L. 4 — 

 4J 1. Common. ;S^. melanura, Lin. 



Leptura. 



A, Upper-side closely, under-side very closely covered 

 with yellowish-gTeen pubescence. 



Body black ; joints of antennae yellow at base. L. 6 — 

 8 1. Eare. L. virens, Lin. 



J5. Pubescence gray, not close. 



a. Legs red. 



Black ; mouth, elytra, part of abdomen, antennae of 

 female and legs rust-red. L. 7 1. Eare. L. rufa, Brul. 



b. Legs black (anterior tibiae sometimes brown). 



I. Elytra black. 



Black, dull; scutellum closely covered with yellowish 

 pubescence. Punctuation strong, finer toward apex of 

 elytra. L. 7 1. Scarce. L. scutellata, Fab. 



II. Elytra either yellow-brown, with apex black, or 

 entirely bright-red. 



