32 KA.NSAS UNIVERSITY SCIENCE BULLETIN. 



cept in Mastopoda) . Honey-tubes of different lengths, seldom 

 tuberculate or absent. Style always present. 



This is one of the largest subfamilies. In habit the species 

 are the most variable. 



For convenience this subfamily may be divided into the three 

 following tribes : 



3. Antenna? on conspicuous frontal tubercles; style long, never shorter than 



the tarsi MaGrosij)hini. 



Antennae on inconspicuous frontal tubercles or none ; style short or none, 

 never longer than the tarsi 2. 



2. Style conical ; honey- tubes cylindrical, or rarely incrassate Aphidirii. 



1. Style obsolete or globular; honey-tubes tuberculate, or distinctly incras- 

 sate ( 'allii)terini. 



Tribe CALLIPTERINI. 



Antennae not constant, as a tribal characteristic, being vari- 

 able in length, sometimes shorter, sometimes longer, than the 

 body ; when shorter they are generally hirsute ; always seven- 

 jointed, but the seventh may not always be as long as the sixth ; 

 never on frontal tubercles (except in Drepanosiphum) . Beak 

 short (except in Melanoxanthus) . Wings often clouded by vein 

 borders or patches. Abdomen usually elongate and somewhat 

 fiat, often tuberculate or hairy. Honey-tubes, when tubercu- 

 late, strong, distinctly incrassate or obsolete. Style globular 

 or none. 



Genus Cladobius Koch.'' 



Vertex flat between the antennoe. Antennae seven-jointed 

 and about half the length of the body ; the third joint about 

 twice the length of the fourth. Beak extending to the meso- 

 coxse. Prothorax with a lateral tubercle. Wings moderately 

 long. Legs normal and hirsute. Abdomen oval. Honey-tubes 

 vasiform. Style globular or absent. 



Genus Chaitophorus Koch. 



Front of head tufted with bristles. Antenna' hirsute, seven- 

 jointed, about half the length of the body. Beak short, some- 

 times extending a little caudad of the mesocoxso. Wing 

 venation normal, with the addition of smoky borders and spots. 

 Legs hirsute and moderately long. Abdomen usually tuber- 

 culate, and with long slender hairs, which are never capitate, 



15. No reprosentative in this text. 



