76 BEETLES. 



* A. hiridiis, Payk. (Plate VII., Fig. 22). Wing-cases with 

 short, scattered hairs towards the end, sometimes dirty greyish- 

 yellow or black, with yellow lines and streaks, and occasionally 

 uniform black. The tarsi are reddish-brown. It is common 

 in spring. 



* A, arenarius, Oliv. Shining black, occasionally brown. 

 Head without protuberances. Wing-cases light or dark brown, 

 obliquely excavated towards the suture at the extreme point. 

 Antennae and palpi orange, tarsi reddish - brown. Length, 

 2-3 mm. It is local in chalky and sandy places. 



Genus Odoxt^us, Klug. 



Body short, oval. Antennae eleven-jointed, with an almost 

 round trilobate club. Maxillae dentated at the extremity. 

 Mandibles with two horny lobes, the outer being somewhat 

 triangular, and the inner having two simple horny hooks. 

 The eyes are completely divided by the margin of the head. 

 The middle legs are close together. The head has two pro- 

 tuberances in the males, and the pronotum two horns. They 

 are found in dung. The only British species is : 



* 0. mohilicornis, Fabr. (Plate VIIL, Fig. 1). This is dark 

 brown or vellowish-brown above, with oram^e legs and antennae. 

 The head and pronotum are more strongly punctured in the 

 female than in the male, with indistinct elevations. It is 

 found in the south of England, but is very rare. 



Genus Geotrupes, Latr. 



Body oval and generally convex. Antennae with eleven 

 joints, the first being long, set with single long hairs. The 

 club is oval, trilobate, the lobes being almost completely 

 separated, with the middle lobe sometimes half enclosed 

 between the others. The eyes are quite divided by the 



