1908.] |07 



A. Elytra with very broad flattened sides. 



a. Brown or brownish-black, thorax and elytra reddish at the 



sides ; club of antenna? dark E. parvula, Sturm. 



b. Beddish-yellow, elytra sometimes to a greater or less extent 



blackish ; club of antennae concolorous. 

 a* Narrower; more strongly and diffusely punctured ; apex 

 of elytra more rounded; middle tibiae of J 1 simple... 



E. deleta, Er. 

 b* Broader ; less strongly and more thickly punctured ; 

 apex of elytra more truncate ; middle tibiae of $ 

 sinuate E. silacea, Er. 



B. Elytra with moderately broad, or quite narrow sides. 



a. Apex of elytra broad and truncate E. neglecta, Sturm. 



b. Apex of elytra rounded. 



a* Elytra with very short shining golden hairs ; rust-red or 

 reddish-yellow, elytra generally with a small dark 

 discal spot ; middle tibiae of $ simple... 



E. variegata, Herbst. 



b* Elytra with longer, not shining hairs ; middle tibiae of $ 

 sinuate. 



rtf Narrower, less sinning; anterior margin of thorax 

 less emarginale ; last joint of antennae dis- 

 tinctly narrower than penultimate... 



E. obsoleta, F. 

 h\ Broader, more shining, anterior margin of thorax 

 less emarginate ; last joint of antennae about 

 as broad as penultimate ...E. immunda, Er. 

 2. Thorax with anterior margin very slightly emarginate. 



A. Apex of elytra broad and truncate; club of antennae concolorous... 



E.florea, Er. 



B. Apex of elytra rounded ; club of antennae darker... 



E. longula, Er. 



II. Thorax broadest at middle of sides, not or not much more narrowed in front 

 than behind ; elytra parallel-sided as far as middle. 



i. Punctuation extremely fine ; last joint of antennae infuscate... 



E. thoracica, Tourn. 

 ii. Punctuation much stronger. 



1. Size larger ; club of antennae concolorous ; thorax a little broader at 



base than at apex E. pus ilia, Er. 



2. Size smaller; club of antennae infuscate; thorax a little narrower at 



base than at apex E. augustula, Er. 



The shape of the thorax is a very good character for the two main divisions of 

 the genus, as there seem to be no intermediate forms. The marked convexity of 

 E. melina, E. asstiva, and E. nana is also a most useful character, as it can be so 

 easily seen in the field. One need never take home large numbers of the two 

 commonest species, E. melina and E. estiva, if this is remembered, and the very 



