WEST INDIAN APHODIINAE — CHAPIN 3 



ton, also of the British Museum, for material from his collection and 

 suggestions ; and to Dr. P. J. Darlington, of the Museum of Compara- 

 tive Zoology, for the loan of considerable material from the Greater 

 Antilles. 



Table 1. — Distribution of West Indian Aphodiinae 



KEY TO WEST INDIAN GENERA OF APHODIINAE 



1. Pygidium without sharp division into basal and apical parts, apical 



angles of elytra not thickened Aphodius 



Pygidium divided into two parts by a more or less distinct trans- 

 verse carina ; basal part furnished with a median longitudinal 

 groove ; apical angles of elytra thickened to conform to groove 

 on pygidium 2 



2. Middle coxa long and oblique, terminating beneath edge of elytral 



epipleurum Euparixia 



Middle coxa oval, not touched by elytral epipleurum, prothorax 



not strongly constricted - basally 3 



3. First segment of hind tarsus as long or nearly as long as three 



following combined .1 



First segment of hind tarsus about as long as two following com- 

 bined 5 



4. Front of head coarsely granulate ; first segment of hind tarsus tri- 



angular ; longer spur of hind tibia broad and as long as first 



three tarsal segments combined Psammodius 



