260 THE ENTOMOLOGIST. 



Species. — 0. vejdovsktji, Sulc, 0. signoreti, Haller, Europe ; 

 O.fodiens, Giard, Guadeloupe. 



PHENACOLBACHIINiE . 



Phenacoleachia, Cockerell. 

 Phenacoleachia, Cockerell, Cauad. Entom. 1899, p. 274. 



? . Form elongated, labium long ; anal ring with six hairs ; 

 antennae 11-jointed, with curved spines at the end. 



(?. With two long caudal filaments; and compound eyes con- 

 sisting of ocelliform bodies forming a single ring round the head, 

 interrupted above and below. 



General form of both sexes resembling the Dactylopiini. 



Species. — P. zealandica, Maskell, New Zealand. 



ON THE MOEPHOLOGY AND CLASSIFICATION OF THE 

 AUCHENOKRHYNCHOUS HOMOPTERA. 



By Dr. H. J. Hansen. 



(Continued fi'om p. 236.) 



IV. 



As above mentioned, I accept the classification of the 

 Auchenorrliynchous Homoptera into four families (proposed by 

 Stal in ' Hemiptera Africana,' vol. iv.), with the limitations for 

 these given by him. At the same time, Stal's fundaments of this 

 system are very defective, so that not one of the later authors, 

 not once even J. Sahlberg, has adopted them. I now attempt 

 to collect the chief points of the new results of my researches, 

 with the earlier known facts for an analytical table of the family 

 characters. 



The exclusive characters are printed in italics, the not absolutely 

 exclusive hut well characterized structures are jii'i^ited in ordinary 

 type. 



When one has to deal with several types (here families) the 

 nature of the analytical table sometimes causes a difficulty, i. e. 

 the strong emphasizing of a character absolutely peculiar to one 

 family (for instance, the absence of an empodium in the Stridu- 

 lantia in contradistinction to its presence in all the other families) ; 

 I have endeavoured to obtain this by the employment of special 

 printing; square brackets are used for sentences inserted, and 

 are not used when a special point is to be brought into relief. 



A. Second segment of peduncle of the antennce ivithout sensory 

 organs, flagellum ivith several or many sensory fovea. Intermediate 

 coxce with the intero-basal angles a little remote inter se ; coxal ah- 



