1880.] 



PROF. WESTWOOD ON THE GENUS PERGA. 



379 



EXPLANATION OF THE PLATES. 



Plate XXXIII. 



Details of the genus Perga. 



Fig. L Head of Perga dorsalis $ , seen in front. 



2. Maxillffi and labium of ditto, from the outside. 



3. „ ,, ,, from within the mouth. 



4. Maxilla of P. Jcliigii, separate. 



T). Labium and labial palpi of ditto. 



6. Antenna of Perga hrullci, with six very short joints. 



7. „ -P. latrciUil (6-jointed, with elongate intermediate joints). 



8. ,, P.jurinei {l-'yAnieA). 



9. „ P. mayrii (5-jointed). 



10. „ P. Uugii S- 



11. „ P.Jdiigii $. 



12. Extremity of fore wing of Perga schiodtei, with third submarginal cell 



appendiciilaled. 



13. Extremity of fore wing of P. briillei, with angulated costa, and third 



submarginal cell scarcely extending beyond the middle of the 

 stigma. 



14. Extremity of fore wing of P. walkeri, with third submarginal cell angu- 



lated at its extremity. 



15. Extremity of fore wing of P. cameronii, with third submarginal cell 



oblong-quadrate and extending far beyond the stigma, and with 

 the second recurrent veinlet confluent with the yeinlet between 

 the second and tliird submarginal cells. 



16. Extremity of fore wing of P.jurinei, with the yeiulet between the first 



and second submarginal cells nearly obsolete. 



17. Extremity of fore wing of P. smithii, with the fh-st and second sub- 



marginal cells imited together. 



18. Extremity of forewing of P. guerinii, with the same as last, and with 



the fore margin angulated. 



19. Extremity of tibia and tarsus of P. Jclugii, seen beneath. 



20. Two joints of tarsus of P. klugii, sideways. 



Fig. 1. Perga Mtigii c?, p. 363. 



2. klugii $ , p. 363. 



3. schiodtei (^ , p. 364. 



4. schiodtei J , p. 364. 



Plate XXXIV. 



Fig. 6. Perga vollenhovii ^ , p. 365. 



6. bndlei $, p. 364. 



7. ritsemei 5 , p. 365. 



Plate XXXV. 



Fig. 



Fig. 



1. Perga guerinii S >V- '^^'^• 



2. macleaii $ , p. 372. 



3. dahlbomii i^, p. 371. 



4. dahlbomii $, p. 371. 



Fig. 5. Perga esenbeckii 5 , p. 365. 



6. 2)eletierii t^, p. 370. 



7. gravenhorstii, p. 366. 



Perga focrsteri, p. 368. 



dalmanni, p. 369. 



latreillii, p. 372. 



Plate XXXVI. 



Fig. 4. Perga spinolce, p. 371. 



5. walktrii, p. 368. 



6. smithii, p. 375. 



Fig. 1. Perga cressonii, p. 368. 



2. chrisiii, p. 366. 



3. cameronii, p. 367. 



4. kirbii, p. 371. 



Plate XXXVII. 



Fig. 5. 

 6. 



7. 



Perga halidaii, p. 377. 



jurinei, p. 378. 



magrii, p. 378. 



