Bleth/'m.] adepiiaoa. 17 



Askhnin Bog, York; Rppton ; Lincoln; Carlisle; rare in the London district; 

 Essex ; Slapton Ley, Devonshire. Scotluud local, Lowlands ; also taken at Braeinar. 

 Ireland, near Belfast. 



EZiAPKRUS, Fahricius. 



Tlie species of this genus (aLout tliiity in number) are confined to 

 the northern lieniisphere. In the sliape of their liead, largo prominent 

 eyes, general contour, and the rapidity of their movements they bear 

 a close resemblance to the Cicindelid?e ; they are found in damp places, 

 on the mud at the margins of streams and rivers, running with great 

 swiftness in the sunshine. 



The larva of Elaphrus cupreus is figured by Schicidte (iii., PI. xiii.. Fig. 2). It is 

 linear, slightly fusiform, with a subquadrate head fastened to the thorax by a very 

 broad neck; the clypiais is serrate and has the centre sharply elevated into a short, 

 sharp, conical horn ; the shields of the thorax and of all the dorsal segments of abdo- 

 men are margined, shortly pilot-e, and furnished with erect set:e; the cylindrical anal 

 appendage is twice as long as the ninth segment, and the cerci arc comparatively 

 short and thick, a little bent, and somewhat branched, furnished with long outstandino- 

 hairs ; the larva is white with the head and dorsal shields of thorax and abdomen 

 metallic; the legs are yellowish, with sti'ong claw.s of equal length. 



I. Tibiae testaceous. 



i. Male with three first joints of anterior tarsi dilated; 



elytra with one polished raised granule near suture 



especially conspicuous E. RiPAEitTS, L, 



ii. Male with four first joints of anterior tarsi dilated; 



elytra with four polished raised granules near suture 



about equally conspicuous E. cupretjs, Du/f. 



II. TibiiD dark. 



i. Sculpture of elytra distinct. L. 7 mm E. ttlioinosus, /•''. 



ii. Sculpture of elytra iudistinct. L. 9 mm E. Lappoxicus, Gj/IL 



E. riparius, L. Upper side coppery with a strong metallic 

 green tinge ; antennae greenish at base, the upper joints fuscous and 

 pubescent ; thorax narrowed in front and behind, densely punctured, 

 witli a dorsal line dividing and usually forming a Y in front ; elytra In-oad, 

 very densely punctured with four rows of shallow oeellato fovea; ; near 

 the suture is a conspicuous polished granule, and traces of smaller ones 

 towards apex ; tarsi and femora metallic green, tibiae testaceous. L. 6-7 

 mm. 



Common and widely distributed throughout England ; abundant in the Lowlands 

 of Scotland, but not recorded from the Uighlands. Ireland, near Dublin and Belfast. 



E. cupreus, Duft. Brownish brassy with a j)urplish tinge on the 

 elytra ; antcnu;e l)lack, l)asal joints with a metallic tinge ; thorax rather 

 long, somewhat coarsely punctured, with strong Y-shaped furrow on 

 centre of disc, posterior angles very acute and prominent ; elytra broad, 

 Avith four rows of shallow, coarsely punctured, occUate fovea?, usually 

 of a purple colour, with a longitudinal raised granule between each pair, 



C 



