540 Scientific Proceedings, Royal Dublin Society. 



Plate XVII. 

 Fig. 



15. Dorsal view of posterior exbremity of fully grown larva, (x 105.) 



A8, eighth abdominal segment ; A9, ninth abdominal segment ; 

 e])l, epipleural lobe and bristles ; scuh, scutellar bristles. 



16. Lateral view of posterior extremity of fully grown larva, (x 105.) 



A8, 9, 10, abdominal segments 8, 9, and 10 ; sp, spiracle ; epl, epipleural 

 lobe. 



17. Ventral view of posterior extremity of fully grown larva, (x 105.) 



an, anus ; other lettering and figures as before. 



18. Left mesothoracic leg of larva ; inside view, (x 550.) Ui, tunica ; 



d, claw ; ts, tarsus ; ib, tibia ; ex, coxa ; fm, femur ; tr, trochanter ; 

 ac, acetabulum. 



19. Eight metathoracic leg of larva; outside view, (x 550.) Lettering as 



above. 



20. Seventh abdominal spiracular plate and spiracle ; surface view, (x 1,100.) 



21. Seventh abdominal spiracle; lateral view, (x 1,100). nk, neck of 



spiracle ; aca, arms of the closing apparatus ; tra, trachea. 



22. Portion of the lai'val cuticle very highly magnified. 



23. Final-stage larva drawn from life, (x 38.) 



24. " Prepupa " of final iustar from life, (x 47.) 1-10, abdominal seg- 



ments ; wp, outline of developing wing-pads of pupa ; al, alar lobe of 

 metathorax ; cpl, epipleural lobe of fifth abdominal segment ; 7«'s, pre- 

 scutum ; sc, scutum ; scut, scutellum ; sp, spiracle. 



Plate XVIII. 



25. Head of fully grown larva ; ventral view, (x 200.) an, antenna ; 



CO, cardo; cl, clypeus; ep, epipharynx ; ejx, epicranium; gal, galea; 

 gu, gula; hyp, hypopharynx ; Ibr, labrum ; lig, ligula ; Ip, labial palp ; 

 . me, mentum ; mn, mandible ; mp, maxillary palp ; jifl, labial palpifer ; 

 pfin, maxillary palpifer ; pr, prothorax ; sm, submentum ; st, stipes. 



26. Head of larva; dorsal view, (x 200.) eps, epistome ; epsu, epicranial 



suture : fr, frons ; frr, frontal ridge ; frs, frontal suture ; nph, ultra- 

 posterior punctures and bristles. Other lettering as in fig. 25. 



27. Head of larva; lateral view, (x 200.) ;j&, pleurostome. Other lettering 



as in fig. 26. 



