■370 Transactions South African Philosophical Society, [vol. xii. 



D^. Apical spur curving inwardly in the male. 



Abdominal segments not free Harmog aster. 



Abdominal segments free Teuchestes. 



D^ No apical spur in the male. 



Clypeus deeply incised Coptochirus. 



C\ Anterior tibiae transversely truncate at tip. 

 a^. Elytra with nine strise on each side. 



Anterior tibiae inflated or laminate internally, 

 basal joint of intermediate and posterior tarsi 

 spinose or contorted Drcjmnocanthiis. 



Anterior tibias and basal joint of intermediate and 



posterior tarsi simple LiparocMrus. 



a^ Elytra with six striae on each side. 



Body very depressed ; tibiae and tarsi simple . . Lorditovicciis. 



B=. Prothorax grooved or costate. 



Anterior tibiae very broadly laminate inwardly ; prothorax 



with a broad longitudinal furrow having rounded walls Syhax. 



Anterior tibiae simple ; prothorax tri-costate Notocauliis. 



B^ Prothorax covered with transverse folds. 



Clypeus deeply emarginate, the emargination very 

 arcuate and with the angles sharp ; anterior tibiae as in 

 Aphodius Rhyssciiius. 



A^ Lobe of maxillae dentate inwardly. 

 B^. Anterior tibiae tri-dentate. 



Prothorax with transverse folds ; basal joint of posterior 



tarsi short, dilated Psammodius. 



Prothorax punctulate and with a longitudinal groove ; 



basal joint of posterior tarsi Plcuropliorus. 



B^ Anterior tibiae not dentate outwardly ; prothorax very 

 gibbose, deeply grooved behind, and having there a deep 

 excavation on each side Corythoderus. 



HAEMODACTYLUS, n. gen. 



Buccal part and general facies of A])hodms, from which it differs 

 by the shape of the anterior tibiae of the male, which instead of 



