12 STAPHYLiNiD^. [Aleocliam. 



i. Antennae with fourth joint strongly transverse, joints 

 5-10 equal in breadth, 



1, Elytra reddish A. FUSCIPEs, F. 



2. Elytra black A. lata, Qrav, 



ii. Antenna} with fourth joint hardly transverse ; joints 



5-10 giadually slightly broader ; elytra uuicolorous 

 black or pitchy. 



1. Size larger (1—5 mm.) ; antennaj more thickened 



towards apex A. BHEVIPENNIS, Grav. 



2. Size smaller (3-3^ mm.) ; antennae less thickened 



towards apex A. FQMATA, Grav. 



II. Mesosternum with a longitudinal carina, 

 i. Length 3^-5 mm. 

 1. Thorax evenly punctured. 



A. Elytra rounded at postero-external angles ; elytra 

 black with a more or less strongly marked red 

 spot at apex. 



a. Hind body parallel-sided until just before apex ; 



thorax with strong lateral setae A. TEI3TIS, Graii. 



b. Hind body narrowed from base to apex ; thorax 



without lateral setaj A. bipunctata, 01. 



B. Elytra more or less sinuate at apex near postero- 

 external angles. 



a. Elytra black with a more or less strongly marked 



red spot at apex, 

 a*. Autennse more slender ; legs longer ; hind 



body more closely and evidently punctured . . A. CUNICULORUM, Kr. 

 b*. Antennae stouter; legs shorter; hind body 



less closely punctured A. MACUIata, Bris. 



b. Elytra black (occasionally dark brown). 



a*. Hind body strongly punctured, at least at base. 

 af. Antenuaj not strongly thickened, joints 



6-10 only moderately transverse; apical 



segments of hind body evidently less closely 



punctured than basal segments .... A. lanuginosa, Grav. 

 bf- Antennaa rather strongly thickened, joints 



6-10 twice as broad as long ; hind body 



evenly punctured A. LXG^a, Kr. 



h*. Hind body feebly punctured or almost smooth, 

 af. AntcnnaB not strongly thickened, joints 



6-10 only moderately transverse ; hind 



body visibly but diffusely punctured . . A. VILL03A, Mann. 

 bf. Antennae strongly thickened, joints 6-10 

 twice as broad as long ; hind body almost 



impunctate A. mcesta, Grav. 



c. Elytra red or reddish castaneous, sometimes 

 darker towards sides and suture. 



a*. Hind body plainly narrowed from base to 



apex A. MYCETOPHaga, Kr. 



h*. Hind body almost parallel-sided until just 

 before apex, 

 aj-. Antennae thicker, strongly thickened to- 

 wards apex, joints 6-10 twice as broad 



as long A. mcerens, Gi/ll. 



(hif/uhris, Anbe. 

 fungivora, Sharp). 



