42 
Fug. 
Fig. 
Fig. 
Fug. 
Fig. 
Fig. 
Med. 
rq. 
Fig. 
Fig. 
Fug. 
Tig. 
Fug. 
Fg. 
Ley. 
Fig 
Hig. 
£19.83 
rug, 
2 ede 
Larve ke. of Mycetobia, Ditomyia, and Symmerus. 
. Labrum of Mycomyia marginata, Meig. 
. Pleural sensory organ representing the remains of thoracic legs 
of Mycomyia mar ‘yinata, Meie. 
» Maxilla of Mycomyia mar. ginata. mv; m.p., maxillary palps. 
. Maxilla of Bolitophila fusca, Meic. 
2. Maxilla of Mycetophila blanda, Winn, 
. Antenna of Bolitophila fusca, Meig. 
PuatE LV. 
[All the figures of this Plate concern the larva and pupa of 
al. 
Bal sy. 
wh: 
“I 
718. 
5 US) 
. 20, 
Ditomyia fasciata. | 
Larva of Ditomyta fasciata, viewed laterally. 
Labrum, ventral side. d., dental chitinous plate ; pl., ventral 
plate. 
Alimentary canal of the larva. a.c., anterior cceea ; m.g., mid- 
gut; AZ, Malpighian tubes; 0.e., esophagus ; p.7., proventri- 
culus; s.g., salivary glands. 
Maxillze and labium of larva. 20., labium; /.p., labial palps; 
i.s., lateral sensory organ of the maxillary palp; m.p., maxil- 
lary palp; m.v., maxillee; ¢.6., transversal chitinous band of 
the cardo of maxilla; s.4., sensory hair of the internal lobe 
of maxille. 
Abdominal spiracle of larva 
Sensory organ—remains of Phoracie lee. 
Last pair of abdominal Spiracles. fie. , felt-chamber (‘chambre 
feutrée ”); T.r., tracheal trunks ; ay external scar; s.p., 
spiracles, 
. Prothoracic spiracle—the black surface represents the external 
scar of this spiracle. 
. Mandibula. 
23. Antenna. 0.s., bell-shaped sensory organ; p., biarticulated 
papilla. 
Pupa, viewed laterally. p.f., prothoracic respiratory horns, 
. Posterior end of this pupa, showing the hooks. 
PuateE V. 
[ Figs. 26-54 concern larva and pupa of Symmerus annulata, | 
26. 
A he 
28. 
29, 
30. 
Sila 
29) 
Uae 
BOs 
34. 
vw. 
ew) 
36. 
On, . 
38. 
Larva of Symmerus annulata, viewed laterally. 
Labrum of the larva, Letters as in fig. 15, . 
Pupa of Symmerus annulata, 
Maxilla and labium of this larva. Letters as in fig. 17. 
Sensory organ—remains of thoracic leg. 
Mandible. 
Antenne. Letters as in fig. 23, 
Abdominal spiracle. 
Last abdominal spiracle. 
Mandible of the larva of Rhyphus fenestralis, 
Mandible of the larva of Mycetobia pallipes, 
Antenna of Mycetobia pallipes. 
Larva of Mycetobia pallipes, viewed dorsally. 
