APHODIUS. 7 



1» Outer lobe of maxillae horny, with four teeth at 

 apex; second joint of maxillary palpi about equal 

 in length to third. 



Head granulate, thorax with transverse furrows. 



Fsammoditos, Latr. 



2. Outer lobe of maxillae leathery, rounded ; 

 second joint of maxillary palpi nearly double as 

 long as third. 



Head granulate ; thorax generally with four transverse 

 furrows. Bhyssemus, Muls. 



H, Labrum and mandibles prominent. 



Head granulate, convex. Mandibles horny. Molar 

 tooth solid, inner lobe of maxillae horny, hooked at apex, 

 outer lobe leathery ; eyes covered when head is retracted. 



Aegialia, Latr. 



Aphodius. 



A. Scutellum very large, \ or \ of the length of elytra. 

 a. Body flat. 



I. Elytra dirty brownish-yellow, often darker in 

 middle. 



Head and thorax black ; antennae and palpi black. 

 Thorax rather closely and finely punctured ; elytra with 

 fine shallow notched striae, interstices flat, rather closely 

 punctured. Eing at apex of hinder tibiae formed of longer 

 and shorter bristles. L. 3| — 41. Common. 



A. erraticus, Lin, 



II, Upper-side entirely black. 



Antennae brownish-yellow, club blackish ; palpi red- 

 dish-brown. Thorax diffusely covered with large, mixed 

 with small punctures ; elytra with strong notched striae, 

 inner interstices raised. Eing at apex of hinder tibiae 

 formed of short bristles only. L. 2| — 3 1. Common. 



A. suhterraneits, Lin. 



&. Body convex. 



Eing at apex of hinder tibiae formed of short bristles 

 only. 



I, Outer edge of anterior tibiae not notched above 

 teeth ; length 4 — 5| lines. 



