BRITISH CISSID BEETLES. 85 



C. nitidus Hei-bst. Colour pale brown to Ijlack. Clubs of 



antennaj always .dark. Anterior angles of thorax 



produced. 

 C jacquemarti Mell. Colour pale brown to l)lack. Clubs of 



antennje always pale. Anterior angles of thora,x not 



produced. 



Group 2. — Form short. Plainly pubescent. L. 1^-2 mm. 



G. bilmnellatiis Wood or ¥o\y\Qv'^ = mini(,tus Blackburn. Upper 



surface dull. Clubs of antennae dark. 

 C. li.neatosetosus, sp. n. Upper surface shiny. Clubs of antennte 



pale. 



Group .3.— Oblong. Rather broad. L. 2-4 mm. 



G. holeti Scop. Thorax uneven, irregular impressions on disc, 



base not bordered. Clubs of antennae pale testaceous or 



black. 

 G. setiger M.e\\. = villosulus Marsh. Impressions on thorax more 



or less obsolete, base bordered. Clubs of antennse pale 



testaceous or black. 

 G. raicans F. Never quite black. Clubs of antennae always 



dark. 

 G. hispidus Payk. Mature specimens always black. Clubs of 



antennae always pale I'ed. 

 G. bidentatus 01. Dull. Scanty pubescence. 



Group 4. — Elongate. Large. L. 2|--2| mm. 



G. alni Gyll. Shiny. Finely punctured. Very scantily pub- 

 escent. Clubs of antennae pale or dark. Tibiae long and 

 slender. 



G. latifrons, sp. n. Not so shiny. Coarsely punctured. Dis- 

 tinctly pubescent. Head very broad. Clubs of antennae 

 pale. Tibiae short and stout. 



G. jyunctidaUts Gyll. Dull. More coarsely pvmctured and with 

 longer pubescence. Clubs of antennae pale or dark. 



Group 5. — Elongate. Size smaller. L. 1-2| mm. 



G. ohlongus ^iQ\\.=pyg')n(Bii,s Mai'sh. Black. Legs red or partly 

 red and black. Clubs of antennte variable, pale or dark. 

 Pubescence usually reddish, rarely yellow or white. 

 ^ Females sometimes much above average size of this 



group. 



G. vestitus Mell. First ventral segment of abdomen of male 

 bearing a tsmall umbilicate depi'ession in the middle 

 (Newbery). Colour variable, but rarely black. Legs 

 ferruginous, never red or bjack and red. Clubs of 

 antennae pale or black. Ujjper surface dull. 



