1876.] MR. H. DRUCE ON PERUVIAN BUTTERFLIES. 243 



2. C. cipris, Fab. (Pap. cip.) Ent. Syst. iii. 1. p. 212 (1793). 

 Valley of Cosnipata (H. Whitely). Mus. D. 



3. C. rurina, Feld. Wien. ent. Mon. v. p. 82 (1861). 



Huiro ad alt. 4800 ped., valley of Santana (H. Whitely). 



Mus. D. 

 One specimen only. 



4. C. philea, Linn. (Pap. ph.) Syst. Nat. i. 2. p. 764 (1776). 



Upper Ucayali (Bartlett). Mus. D. 



" Not common." — E. B. 



5. C. argante, Fab. (Pap. a.) Syst. Ent. p. 470 (1775). 



Upper and Lower Ucayali {Bartlett). Mus. S. Gr. & D. 



" Very abundant." — E. B. 



6. C. trite, Linn. (Pap. t.) Syst. Nat. i. 2. p. 763 (1/66). 

 Upper Ucayali (Bartlett). Mus. D. 



7. C. statira, Cram. (Pap. s.) Pap. Esot. ii. t. 120. f. C, D (1779). 



Upper and Lower Ucayali (Bartlett). Mus. S. Gr. & D. 



" The species of this genus are very abundant at certain seasons ; 

 they maj be found by thousands on mud-banks of rivers, mingled 

 witb Pieris, Papilio, and others." — E. B. 



Genus Pieris, Boisd. 



1. P. demophile, Linn. (Pup.d.) Syst. Nat. i. 2. p. 761 (1767). 

 Nauta and Upper Ucayali (Bartlett). Mus. D. 



2. P. pisonis, Hew. Exot. Butt. ii. t. 6. f. 40, 41 (1861). 

 Nauta and Upper Ucayali (Bartlett). Mus. S. Gr. & D. 



3. P. diana, Feld. Wien. ent. Mon. v. p. 81 (1861). 



Nauta (Bartlett). Mus. D. 



" Pieris is generally distributed over the whole of East Peru ; and 

 some of the species are extremely common on the mud-banks of the 

 rivers, where they assemble in patches of hundreds together. It is 

 puzzling to the traveller what becomes of the females. The whole 

 of the four years I was in Peru I only obtained about six females of 

 all the species of the genus Pern* ; the males I collected by hundreds." 

 —E. B. 



Genus Appias, Hiibn. 



1. A. ilaire, Godt. (Pap. i.) Enc. Meth. ix. p. 142 (1819). 



Nauta (Bartlett). Mus. D. 



" Very common." — E. B. 



2. A. drusilla, Cram. (Pap. d.) Pap. Exot. ii. t. 20/. f. C (1779). 



Valley of Cosnipata (H. Whitely). Mus. D. & S. G. 



16* 



