Rev. F. 1). Morice's Notes on Australian Sawflies. 265 



in commencing his List of " Heptacola" spp. with II. 

 macleayi, Westw.; for the latter, as I have mentioned 

 elsewhere, is neither a Heptacola, nor a Perga, but identical 

 with Froggatt's Type-species of Philomastix, hitherto 

 known as glabra, Froggatt. It must be known in future 

 as Philomastix macleayi, Westw. 



SYNOPSIS OF PERGA (AND XYLOPERGA) SPP. 



1. Fore-wing with its third cubital nerve (PI. XV, Fig. 14) rising 



at first perpendicularly from the cubitus, but soon becoming 

 curved (or even suddenly angled) inwards and running ob- 

 liquely towards the stigma. It is therefore not nearly parallel 



to the second cubital nerve 2. 



— Fore-wing with its third cubital nerve ( PI. XV, Fig. 15) approxim- 

 ately straight throughout, and parallel (or nearly so) to the 

 second cubital nerve 22. 



2. Antennae short, but not paradoxically so * — generally about 



* Two species, both belonging to the section of Perga in which 

 the third cubital nerve is sharply bent inwards, cannot at present 

 be tabulated by their antennal characters, since the unique Type- 

 specimen of each had lost its antennae before the species was 

 described and figured. These are P. walkerii, West wood, and P. 

 christii, Westwood (Types of both at Oxford). I will therefore here 

 mention other characters by which they may probably be recognised 

 if they should be rediscovered. 



1. P. walkerii is a rather large and robust form about 18 mm. 

 long. The head (above), the pronotum, and the greater part of the 

 legs (except the black hind femora), are fulvous. The whole 

 mesonotum including the scutellum (!). the metanotum, the three 

 basal segments of the abdomen above and all its ventral surface up 

 to the sawsheath ate black. The remaining (apical) segments of 

 the abdomen above are reddish-fulvous. The wings are stained u it h 

 yellow, their venation and the stigma brown. (Details of "saw " 

 PI. XIV, Fig. 12.) 



2. P. christii has the abdomen entirely chalybeous. The head 

 and thorax are blackish with very copious whitish markings. Of the 

 latter colour are the clypeus, labium, orbits of eyes, antennal 

 tubercles, two spots on the vertex, the edges of the pronotum widely, 

 a spot in the posterior corner of the middle mesonotal lobe, the whole 

 scutellum with its apical lobe-like processes and the ridges which run 

 obliquely from its basal corners towards the insertions of the wings. 

 The basal half of each fore-wing is clear and colourless, hut its apical 

 half is distinctly infuscated throughout and especially so under 

 the stigma. The veins and stigma arc black. Length about 

 15 mm. 



Konow treats this sp. as a synonym oifoersteri, West. (i. e. bella, 



