5 



Micrathyria aequalis (Hagen). Found in Cuba and also in 

 Mexico and Grenada; a small species quite common around 

 the ponds and preferring the vegetation that grows in deeper 

 waters; this species patrols the center of the ponds, while 

 T. justiniani hunts along the shores. 



Micrathyria didyma (Selys). Confined to the West Indies; com- 

 paratively rare at Montego Bay and found only in the vicinity 

 of the larger ponds; considerably larger than the preceding 

 species and both of them very active and agile flyers. 



