PSAMMODIUS. 17 



with five coarsely punctured transverse furrows; first joint 

 of posterior tarsi dilated, sliorter tlian the hroad apical 

 spine of tibia ; posterior femora thickened. L. 1| 1. Not 

 very common. P. sulcicollis, 111. 



jB. Tarsal claws of usual size ; thorax not bordered with 

 bristles. 



Elongate, nearly cylindrical. Black ; margins of thorax 

 and usually also the elytra lighter. Thorax diffusely and 

 very strongly punctured, with a fine central furrow, ab- 

 breviated in front, and two feeble transverse furrows on 

 each side; iirst joint of posterior tarsi elongate, parallel- 

 sided, longer than apical spine of tibiae, which is narrow 

 and pointed. L. 1| — 1| 1. Rare. P. caesus, Panz. 



Mhyssemus. 



Brown-black, dull. Forehead diffusely granulate, vertex 

 somewhat depressed on each side, very closely and finely 

 granulate ; thorax with four transverse furrows, the hinder 

 two interrupted in middle, sides and base fringed with 

 bristles ; elytra with punctured striae, interstices with two 

 rows of granules. L. 1^ — 1|1. Bare. Pt. gcrmanus,\A\\. 



Aegialia, 



A . Posterior legs not thickened ; apical spines of tibiae 

 narrow and pointed ; tarsal claws of usual length but 

 thin. 



Oblong, almost cylindrical, winged. Black or pitch- 

 brown. Last joint of maxillary palpi thin, spindle-shaped ; 

 thorax strongly punctured, bordered at base ; elytra with 

 strong punctured striae. L. 2\ 1. Not uncommon. 



A. sahuleti, Payk. 



7?. Posterior legs thickened, with apical spines of tibiae 

 dilated ; tarsal claws small and feeble. 



a. Body short, black or pitch-brown, elytra almost 

 globular, with feeble striae. 



Apterous. Thorax smooth, base not bordered. L. 2 — 

 2J 1. Common. A. arenaria, Fab. 



1). Body almost cylindrical, brown-red ; elytra with 

 strong striae. 



VOL. II, 



