﻿305 



(4) We now have a heterogeneous mass, which 1 tempor- 

 arily rank into famihes, viz., Aclnhdae, hutropistidae, Derbidae 

 and Lophopidae. ihese are almost certainly artihcial. The 

 character tnat separates them from the Fulgoridae is that the 

 anal vein of tlie clavus runs into the commissure in the latter, 

 while it runs into the apex of the clavus in the four famihes 

 mentioned just before, i his may seem a trivial character, but 

 it was insisted upon by Stal, and is certainly correlated with 

 other good characters; unfortunately in Achilidae and Eutro- 

 pistidae, it is dilificult to determine the character of the antennal 

 sensory organs, though in some of the latter, they seem Ful- 

 gorid. Although laid down by Stal, he himself has erred in 

 assigning certain genera correctly, as have Melichar and other 

 authors, for instance Lamciiia is certainly not a Derbid, though 

 it might be an Achilid were it not for the claval venation. 1 

 have placed it temporarily in the Cixiinae, where it perhaps 

 looks uncomfortable. Ashmead and Swezey locate it in the 

 Poekillopterinae, but the clavus shows no trace of granulation 

 and the venation is of a dilTferent type. 



Many of the Eutropistidae have a close resemblance to Dic- 

 tyophorinae but, as I believe, this is false. In the former, the 

 costal vein is present in its entirety, and the costal cell is mul- 

 tivenose transversely; in the latter, the costal vein is short, 

 merging in the subcostal, and the subcostal cell (which is the 

 marginal) is plain.* 



The Derbidae are most probably a mixture; the typical forms 

 have a plain clavus, but the majority have the anal vein very 

 strongly sensorized; here too are some of the most extraordin- 

 ary antennae in the Homoptera. 



The only conclusion to be gained from a consideration of tlie 

 Australian Fulgoroidea is that they need a great deal more 

 study, especially on the venation and antennae, and more espe- 

 cially on the earlier stages. 



(2) ['a)i Dii:::cc's classlficafioit of Tcfigoiiiidac (his Jassoicica). 



( 1 ) ! do not think, after studying Tartcssiis and allied genera, 

 that the "Bythoscopidae" really form even a subfamilv: indeed 

 it is very difificult to draw sharp lines of distinction all through 



* My recently jmblished Peee-'ora fonnosa (the manuscript, however, finished in 

 lllO.S) from Lefu, is stated to be allied to Diciyotihora : it is, however, probablv an Eutro- 

 pistid. I have no specimens here for re-examination. Astorga also, althoush placed in 

 the Dictvophorinae. has a well-developed costal vein. 



