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projections c,n the head, (type consobrina Curt\s=puncticeps 



Germ.) 15 (***) Agallia 



16a Posterior margin of vert-x emarginate, but margining the 

 eyes behind. Nymph with the entire posterior margin of the 

 vertex elevated, truncate as seen dorsally. (type novellus Say") 

 16 (***) Agalliopsis 



17 Clypeus fused with frons ( 18 ) 



17a Clypeus not fused with frons ( 19) 



18 Face longer than wide 17 N chela 



i8a Face wider (between the eyes) than long 



18 Thalattoscopns 



19 Pronotum reaching beyond the anterior margin of the 

 eyes, first two wing veins apparently not confluent (23) 



19a Pronotum not reaching as far as the middle of the eyes, 

 first two wing veins confluent towards the apex (20) 



20 Head dorsally wider in the middle than at the sides ; a 

 minute appendix close to apex of clavus. . . .19 Batracomorphns 



20a Head dorsally at least as wide at the sides as in the middle 

 (21) 



21 Two subapical cells in the tegmen (22) 



2ia Three subapical cells 21 Eurinoscopus 



22 Lateral keel of pronotum not reaching the eye, but curving 

 far down onto the pleura. Head scarcely narrower than prono- 

 tum. Clypeus strongly convex, very broad at base, suddenly 

 strongly narrowed beyond the middle to the rounded apex.... 

 20 Straganiopsis 



22a Characters not as above (=^Macropsis auctt.. type laiiio.) 

 22 Bythoscopiis 



2^ Head dorsally angulate anteriorly, and angulately emar- 

 ginate posterioily. Pronotinn sinuate posteriorly. Face about 

 as long as wide between the eyes 23 Sfoiiasla 



23a Head anteriorly lightly rounded. Pronotum truncate be- 

 tween the scutellar angles. Face much wider than long. . . . 

 24 Macroccps 



Idiocerus. 



The venaticn in this large genus is very variable. The eleven 

 Australian species are separable as follows : 



I Head spotted (2) 



*** These characters were pointed out and used for divisional purposes Ity Osborn 

 and Ball in their treatment of AgaHla. They are good genera, in my opinion. 



