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A NEW GENXTS OF AUSTRALIAN DELrilACIDAE (HOMOPTERA). 



By 1'\ UiiR. F.E.S. 



(Communicated hi/ E. IP. Feriiicoii, 31. B., Ch.M.) 



(Witli iiiu' trx(-li};iirf. ) 



Very little is known of the Australian Ddphacidae, and most, if not all, of 

 the species recorded are from the Eastern States. The finding of an undescribed 

 species from Kins;' George's Sound, South-west Australia, in the Macleay Collec- 

 tion at the Sydney University is therefore of interest. 



T have proposed a new genus for this species for reasons stated Ijelow, and 

 consider that it is entogenic. Of the fourteen genera, containing about fifty species, 

 recorded as Australian, I consider only one. with one species (Proterosydne 

 arhorea Kirk.) can be regarded as entogenic, all the others being genera whose 

 centres of density are situated outside of Australia, or they are so nearly allied to 

 such genera as to demonstrate their origin clearly. 



The character of the tibial spur places tliis genus in the Tropidocephalini. 

 From Tropidocephalus it differs in having the head much more elongate and flat- 

 tened laterally instead of horizontally. The Hawaiian genus DictiiophorodelriJm.r 

 Swezey is superficially like it, but belongs to the Alohini ; the head is not fiattened 

 laterally and the tegniina are truncate at apex. The South African genus Embo- 

 lophora Stal, I only know by the description. Stal sank it into Libuniia Stal, st) 

 tor the present we must consider that it belongs to the Delphacini. The head is 

 not so long a.s in Pseudemholophora. 



PSEUDEMBOLOPHORA, n.g. 



Type, Pseudemholophora macleayi. 



Head very long and flattened lateraUy, three times as long as the pro- and 

 meso-nota together; vertex narrower at apex than at base, a median carina on 

 basal third after which it fades out; median frontal carina entire from base to 

 apex, lateral carinae from base to eye, and another from near the eye to apex, a 

 transverse carina on gena; eye oblong with a slight antennal emargination ; clypeus 

 in profile produced into a strong point in middle, tricarinate; antennae terate 

 reaching slightly beyond apes of face, fii'st joint about as long as wide, second 

 joint twice the length of first, slightly enlarged to apex, arista apical. Pronotum 

 Iricarinate, lateral carinae very slightly diverging posteriorly, reaching the hind 

 margin; mesonotum tricarinate. Hind femora short, reaching one-foiu'th from 

 apex of abdomen in male and about one-half in female ; tibiae longer than femora ; 

 tarsi shorter than tibiae, first tarsal joint sube(|ual to the other two together; 

 spur slightly shorter than first tarsus, cultrate, thick, slightly concave on inner 

 surface, a strong tooth at apex but none on hind margin. Teginina long and 

 nan-ow, the apex produced to an acute point. 



