86 



ADEPHAGA. 



[Anchomeiius. 



A. ANGITSTICOLLIS, F. 



occupied the name Platyna for a genus of Diptera. The Anchomeni are 

 iouncl in all sorts of localities, both damp and dry, vinder stones, refuse, 

 moss, &c., in cracks in the banks of streams, at the roots of grass 

 and trees, under bark, and occasionally on low herbage. 



Thelurva of ^l«cAome«!{* marginatus is figured by Schlodte, iii., PI. xx.. Fig. 11. It 

 is wliite with tlie head dark fuscous, the anteniife and mouth ferruginous; the dorsal 

 shields of the thorax are of tlie same colour as the head, those of the abdomen ligliter 

 with darker markings ; the cerci are white with fuscous fasciae, and fuscous at base : 

 the shape of the hirva is very much like that of Chlanius vestitus; the head is broad 

 and sulcate, and the prothorax large, subquadrate, somewhat narrowed iu front witli 

 all the angles rounded ; all the dorsal scuta are margined ; the cerci are moderately 

 long, nodose; the muscular impressions of the abdominal dorsal scuta are well 

 marked ; the legs are sliort and the claws neaily equal. The larva of A. angusticollix 

 closely resembles that just described, but ditfers in having lunger and more slender 

 cerci. 



I. Antennae with three basal joints glabrous. 

 i. Tliorax cordiform with posterior angles 

 projecting. 



1. Thorax with broad concave border; apes 

 of elytra strongly sinuate ; length 10- 

 11 mm 



2. Thorax with narrow border ; apex of 

 elytra not strongly sinuate ; length 6-8 



mm. 



A. Stria3 of elytra impunctate .... 



B. Stria? of elytra strougly punctured 

 ii. 'J'horax not corditorm, posteriorangles blunt 



or rounded. 



1. Forehead with abroad shallow transverse 

 depression just in front of eyes . . . , 



2. Forehead without depression. 

 A. Colour metallic, bronze, coppery, 



greenish, or red, occasionally dark blue 



or blue-black. 

 ao Elytra with yellow margins . . . 

 b. Elytra without yellow margins. 

 a* Legs and antenna; entirely black, 

 af. Stria; of elytra distinctly punc- 

 tured ; third interstice with five 



or six pores, 

 aj. Thorax almost circular, briglit 

 metallic green, elytra brilliant 



coppery red 



bj. Thorax with sides contracted 

 behind, concolorous with elyti-a 

 bf. Siriffi of elytra impunctiite or 

 almost imperceptibly punctured; 

 third interstice with three pores 

 b*. Tib fe reddish, antenna; with first 

 joint red, at least on underside ; 

 striae of elytra impunctate or 

 almost imperceptibly punctured, 

 af . Form broader ; sides of thorax 

 liardly raised towards base ; pos- 

 terior angles rounded .... 

 bf. Form narrower ; sides of 



A. ALBIPES. F. 

 A. OULONGUS, F. 



A. LIVENS, Oyll. 



A. MARGINATUS, L. 



A. SEXrUNCTATUS, L. 

 A. EiiiCETI, Panz. 



A. Sahlbeegi, Chaud. 



A. PAEUMPUXCTATUS, JP. 



