AMAHA. 57 



h. Posterior tibiae bare on the iuiier-side in l)otb sexes. 



Intermediate tibiae of male two-toothed on inner-side, 

 and usually with one or more little prominences ; prosternal 

 })rocess l)ordered. 



I. Antennae (except first joint) and tarsi pitchy ; 

 length 4i lines. 



Parallel-sided. Pitchy ; first joint of antennae, femora, 

 and tibiae red-brown. Head with two deep impressions 

 between base of antennae : thorax short and broad, with a 

 divided, deep, closely punctured depression on each side of 

 base ; elytra with punctured striae. Similar to A. apri- 

 caria, but more elongate and with punctured space on 

 thorax smaller, the punctures deeper. Two specimens 

 taken on Grayvel, Perthshire, of a variety having the 

 elytra dull reddish, with the suture broadly but obscurely 

 darker. A. alpina, Payk. 



II. Antennae and legs reddish ; length 5 — 6 lines. 



1. Anterior margin of thorax closely punctured. 

 Ovate. Upper-side black or pitch-black, shiny ; under-side 



pitch-brown ; antennae and legs red-brown. Head Avith 

 two distinct impressions ; thorax closely punctured at apex 

 and base, with two shallow impressions in the acute pos- 

 terior angles ; elytra with punctured striae. Eather com- 

 mon. -^^ S2yinii)cs, Lin. 



2. Anterior margin of thorax impunctate. 

 Elongate, somewhat parallel-sided. Pitch-brown, with 



metallic reflection above ; antennae, legs, and under-side 

 reddish. Head with two feeble impressions ; thorax 

 rounded at sides, base punctured, with two very shallow 

 impressions (outer one more distinct) on each side ; elytra 

 oblong, with strong punctured striae. Eather common. 



A. convexiuscula, Marsh. 



B, Thorax more narrowed in front than Ijehind, tlie l)ase 

 dilated or as broad as the apex. 



a. Posterior tibiae of male bare on inner-side or only 

 thinly fringed with hairs. 



J. Dilated male tarsal joints broad heart-shaped. 

 Pitch-black above; mouth, antennae, and legs red, l^rown- 

 red beneath. Thorax much broader than long, side border 



