154 ENTOMOLOGICAL SOCIETY 



nest-like, globular structure of whitish color, usually along the mid 

 ribs of the fully developed leaves (fig. 3). Upon examination the 

 wall of this structure is seen to be composed of fine, cotton-like 

 threads. When inhabited by the larvas the nests are of a sticky 

 nature, but old specimens become brittle in time. They are fastened 

 to the leaves by a broad base so that the larva, in feeding, is forced 

 to push its beak through this space into the parenchyma of the leaf. 

 A large number of the adult Psyllids were bred from the speci 

 mens from Key West, but unfortunately none of them were in 

 perfect condition, so that the systematic position of the Psyllid, 

 viz., whether it belongs to the Aphalarinae or the PsylHnae, 

 remains in doubt. Mr. Schwarz stated that from the character 

 of the larvae it would appear that the species belongs to the 



FIG. 3. "Sest making Psyllid from Key West, Florida. 



Psyllinae rather than to the Aphalarinae, the wing parts in the 

 former subfamily' being more oval'and more towards the sides of 

 the body ; whereas in the Aphalarinae the wing parts are of a more 

 quadrangular shape and more towards the dorsal portion of the 

 body. In this connection Mr. Schwarz reviewed the larval 

 habits of such American Psyllidas as have hitherto been studied 

 biologically. 



In discussion Mr. Busck stated that he, also, saw this Psyllid at 

 Key West, Florida. Dr. Ashmead said that since Mr. Schwarz's 

 paper on the nest-making Australian Psyllidae the subject has 

 been taken up by Mr. Froggatt in Australia. Other species of 

 the genera Spondyliaspis and Cardiaspis have been described 

 by the latter author, but no progress has been made in our 

 knowledge of the peculiar structures made by their larvae. 



