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4 Scutellum laterally broadly dark brown (5 ) 



4a Scutellum concolorous (6 ) 



5 Tegmina feebly granulate 3 saccliaricida 



5a Tegmina strongly granulate 6 sinensis 



6 Antennae sborter, granulation dark and stronger 



2 graiiiinicida 



6a Antennae longer, granulations paler and feebler. .4 I'iticiisis 



7 Longwinged forms (8) 



7a Shortwinged forms (9) 



8 Tegmina almost immaculate, some of tbe apical veins lightly 



suffusedly infuscate 4 vitiensis 



8a Median cell sometimes smoky, also 5th and 6th apical cells 

 (except small hyaline spots at apex} 3 saccliaricida 



9 Antennae longer and stouter, tegminal granules compara- 



tively feeble and paler 3 saccliaricida 



9a Antennae shorter and less stout, tegminal granules stronger 

 and darker 2 graminicida 



Table of known nymphs of the genus PcrkinsieUa. 



1 Ground colour of frons darkish-brown with white marks : 



a dark brown stripe across the base of the tegminal and 



wing pads, apex of tegminal pad dark brown 



I pscndoniaidis 



la Frons dark basally with pale marks, pale apically ; tegmina 

 not striped transversely as above (2) 



2 A conspicucius black spot at apex of abdomen on each side ; 



tibial spur fuscous 2 graminicida 



2a No spot (or very inconspicuously) at apex of abdomen on 

 each side ; tibial spur pale (3) 



3 Base of ist segment of hind tarsi brown; clypeus blackish- 



brown 4 vitiensis 



3a First segment of hind tarsi entirely pale ; clypeus pale fus- 

 cous 3 saccliaricida 



The nymph of sinensis is not yet known ; that of vaslatrix has 

 been briefly described by Breddin, but not so as to be included 

 in the table. 



I. psendomaidis. 



PI. XII, figs. 1-3. 



Phacalastor pscndoniaidis Kirkaldy 1. c. 



This species tends to connect typical PcrkinsieUa with Dicrano- 

 fropis, but still has the widened antennae. Mr. Muir has now 



