138 THE ENTOMOLOGIST. 



tennffi, intermediate and posterior legs ferruginous, more or less fumate, 

 anterior femora blackish, basally pallid. Elytra olivaceous, fumate, 

 nervures blackish. Beneath covered with silvery grey pubescence. 

 Head (with eyes) two-fifths wider than long, pronotum roundly angu- 

 late posteriorly. 



$ . Anterior tibiffi curved. Long, (to apex abd.), h\ mill. 



America : Florida ; Darien (collns. Montandon and Kirkaldy). 



Gerris euphrosyne, sp. n. 



Belongs to typical subgenus. 



Head and pronotum dark farraginous ; a broad central longitudinal 

 stripe and a sublateral stripe on vertex, a narrow median longitudinal 

 stripe and a sublateral stripe (greatly widened inwardly on anterior 

 lobe) on pronotum, blackish, lateral margins of pronotum pale yel- 

 lowish. Elytra ferruginous-fumate, nervures blackish. Femora pale 

 fulvous, black at apex, longitudinally banded with same colour ; tibia 

 and tarsi blackish. Sterna black, a sublateral uudulate stripe yellowish. 

 Venter fawn-colour, spotted laterally with black, covered (except later- 

 ally) with silver-grey pubescence. Above covered with golden yellow 

 pubescence. Long. 9 mill. 



Australia : Victoria, Alexandra (collns. Montandon and 

 Kirkaldy). 



THE CLASSIFICATION OF GEACILAEIA AND ALLIED 



GENERA. 



By T. a. Chapman, M.D., F.E.S. 

 (Continued from p. 88.) 



I DO not propose to go into detail as to the habits of these 

 larvae ; that would be to write a life-history of each species, 

 since, though there are some small groups of Gracilaria and 

 Lithocolletis in which one life-history might be written for all 

 the species, altering for each little more than the habitat and 

 food-plant, it is more widely the case that each species has 

 special habits of its own — in its form of mine, in its life out of 

 the mine, in its formation of a cocoon, and so on. There are, 

 nevertheless, things that may be glanced at, as they are probably 

 important as regards classification within the group. 



The group being by its pupal characters a high one amongst 

 the Incompletse, there is no doubt that it had amongst its not 

 very remote ancestors a form something like Biicculatrix in 

 living at first as a leaf-miner, afterwards as an external larva. 

 Bucculatrix may have been derived from the same ancestor, 

 retaining a more primitive pupa, but advancing in having a larva 

 in its later stages living externally and exposed. The primitive 

 Gracilarian must have had a mining larva in its early stages ; 

 an external but leaf-rolling larva in the later. It must then 



