180 MOKDELLID.^. 



fine, sparse, yellow pubescence ; antennte with the first four joints 

 yellow, the rest black, palpi fuscous-yellow ; head large, black, with a 

 thin yellow streak at the clypevis, rounded in fronts straight or almost 

 straight behind, with acute posterior angles ; thorax narrowed in front, 

 a little broader at base than long ; sculpture evenly transversely strigose; 

 elytra elongate, broadest about middle, sculptured as thorax; legs slender, 

 black, knees at apex of tibipe and spurs fuscous-yellow ; anterior tarsi 

 feebly dilated, intermediate tarsi slightly sinuate on their inner side. 



In the male the third ventral segment of the abdomen is longer than 

 the others, and is furnished in the middle at the apex with two long 

 lacinise or appendages which reach to the middle of the fifth segment, 

 approximate at base, separated in middle, and convergent and truncate 

 at apex, with a slight depression between them at apex ; fifth segment 

 long and pointed, contracted a little beyond middle to apex, giving the 

 appearance of a sixth segment, with a small pit or depression which lies 

 in the centre of the apical third of the segment, the lips of which appear 

 to be slightly raised. L. 3i mm. 



Described from a male specimen taken by Mr. Donisthoipe in the 

 centre of a woody fungus on Scotch fir at Nethy Bridge, Inverness- 

 shire, and first recorded by him in error as A. sejjtentrionalis, 

 Champion. 



Mr. Donisthorpe gave a plate (I.e.) with all the male appendages 

 figured of the British species. He has since bred the female (Ent. 

 Rec. 1911, 300), which difi'ers from the female of A. rufilabris in the 

 shape of the antennte and the strigosity of the thorax and elytra. 



A. geoffroyi, Miill. (Germ. Mag. iv. 21, 214 (y. Champion, Ent. Mo. 

 Mag. xxxiv. (2 Ser. ix.) 1898, 103)). We have several forms of this 

 insect in Britain, the two most abundant being the type form with a 

 large humeral spot on each elytron, and the form with a humeral and 

 apical spot on each elytron (var. A-maculata, Costa) ; a rare variety (var. 

 'vulcania,iichi\sky = sithfasciata,SteY>h.) has four elytral spots, and the 

 basal and apical margins of the thorax fulvous ; it is apparently rare ; it 

 has been taken by Mr. Champion at Ashstead, Surrey. Another variety 

 has the thorax entirely fulvous {ftdvicoUis, Schilsky). This apparently 

 does not occur in Britain. Mr. Harwood has taken a variety near 

 Colchester, entirely black, with only the faintest trace of a lighter 

 humeral spot, and Mr. Champion has recorded an entirely black variety 

 from near Putney. A well-marked male character in this species is the 

 strongly sinuous inner edge of the intermediate tibise (I.e. 1895, 207). 



A. ruficoUis, F., var. alpicola, Emery (Essai. Mon. Mord. 1870, 

 22 {v. Champion, Ent. Mo. Mag. xxxi. (2 Ser. vi.) 1895, 207) ). Mr. 

 Champion {I.e. 207), in discussing a series of A. ri(JicoUis submitted to 

 him by Mr. F. and Mr. E. A. Waterhouse, says that " they vary from 

 their normal colour to entirely black, legs, antennae, and palpi included. 

 8ome of them have the thorax fuscous, with the sides rufescent and the 

 legs fuscous, these specimens being clearly referable to the var. 0. oi A. 

 a'picola of Emeiy. In this species the elytra usually have a broad 



