The Beetles of the Mountains 



of fine punctures in black. The latter form is Corym- 

 bites cupreus (the Coppery Corymbites) Fig. 19, Plate VI., 

 and the entirely purple one is a variety of it called 

 var. aruginosus (the bronze variety). Very often 

 this variety is more common than the " type " form. 

 Except in colour they are quite similar, a thorax much 

 longer than broad, thickly punctured with a deep 

 furrow down the centre, and the hinder angles very 

 much produced, the elytra elongate, narrow and pointed 

 at apex, and densely and finely punctured all over, 

 antennae rather long, pectinate (that is, with the joints 

 produced into long teeth on the inside), legs retractile, 

 (or folded back against the underside when we pick 

 the specimen up), and black in colour. Individuals 

 may often be taken in which the yellow colour of the 

 elytra is darkened and the apical purple patch so 

 extended that they seem intermediate between the 

 normal form and its variety. The species is common 

 on the mountain slopes in June, and we shall find 

 it probably quite up to the 2,000 feet level. 



But before we reach that point we shall be sure to find 

 something interesting by the stream. The species of Bern- 

 bidiun which we found haunting the shingle of a brook 

 in a similar spot during the course of our moorland 

 excursion are not yet passed away, and we can renew 

 our acquaintance with them up here, but by turning over 

 stones actually immersed in the water we shall probably 

 find something fresh. Here and there on the wet lower 

 surface of such a stone we may notice an insect that 

 somehow more suggests a spider than a beetle, clinging 



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