PAPERS ON ZOOLOGY 319 



EXPLANATION OF PLATE 



Ant — antennal sheath; G — gills; Pa — sheaths of the paraglossa; 

 R — sheath of the rostrum; S — sternal valves of ovipositor; Sp — larval 

 spiracles; T — tergal valves of ovipositor; W — wing sheath. 

 Fig. 1. Larva of Geranomyia canadensis; labrum. 



Larva of Geranomyia canadensis; hypopharjmx. 



Larva of Geranomyia canadens^is; mandible. 



Larva of Geranomyia cariadensis; antenna. 



Larva of Geranomyia canadensis ; mentum. 



Larva of Geranomyia canadensis ; lateral aspect of caudal 



Larva of Geranomyia canadensis; dorsal aspect of caudal 



Pupa of Geranomyia canadensis; lateral aspect of male. 

 Pupa of Geranomyia canadensis; dorsal aspect of pro- 

 ling-horn. 

 Pupa of Geranomyia canadensis ; ventral aspect of male 



Pupa of Geranomyia canadensis; lateral aspect of fe- 



Pupa of Geranomyia canadensis; ventral aspect of male. 



