62 



RECORDS OF THE AUSTRALIAN MUSEUM. 



and the outer margin is uneven at the very spot where the sulcus 



could he expected to exist. The 

 hasal furrows are very faint and 

 elderly indicated by irregular rows 

 of punctures rougher at the 

 base than along the sides of the 

 plate. Some other strong punc- 

 tures are to he seen in the distal 

 third (Figs. 6 and 7). 



Antenna? moderately elongate 

 (4-10 mm.), without any special 

 setae. 



Median plate of lahruin small, 

 equal to the thirteenth part of 

 the total breadth of the labium, 

 without any process; lateral plates 

 transversely stretched, five times 

 broader than long, fringed with 

 delicately plumose lashes. Pre- 

 labial zone somewhat shorter 

 than broad, furnished with a 

 so-called " Clypealarea" and with 

 but few bristles, say eight in t wo 

 Fig. 7. P.frorjgatti, Brolem. Ceph- rows placed 2 + 6. Sutures of 



alic plate, ventral view, after 



removing the mouth-parts. 



Fig. 8. P.froggatti, Brolem. Labium 

 (the lower branches of the fulcri are 

 missing). 



Fig. 0. P.froggatti, Brolem. 

 Mandibles in situ, with 

 hypopharynx [hyp.) and lower 

 branches of fulcri, (//. ) 



Fig. 10. P.froggatti, Brolem. Apex of mandible: 

 showing the blunt tooth (/); hypopharynx [hyp). 



cephalic pleurffi 

 distinct (Fig. 8). 



M a n d i b 1 e 

 provided, 



beside the 

 pectinate lam- 

 ella, with a 

 blunt ami well 

 chitinized tooth 

 at the apex, 



