18"6.] MR. H. DRUCE ON PERUVIAN BUTTERFLIES. 205 



Fig. 5. Four of the hooks as serially arranged on the proboscis : a, from the 

 external series, h, from the second, c, from the third, and d, from the 

 innermost, respectively. Magnified 60 diameters. 



Fig. 6. A hook from the outermost row ; showing the apex (a), base (6), bulbous 

 projection (c), the posterior root-process or fang {d), the minute open- 

 ing at its extremity (f), which by means of a narrow channel (/) 

 communicates with the general cavity of the organ {g). The anterior 

 fang is marked h. Magnified 355 diameters. 



Fig. 7. Diagram representing a vertical section of the anterior end of the neck : 

 a, collar; b, fold of the first annulation; a, sheath of the proboscis ; 

 d, lumen of the neck ; c, cavity for lodgment of the retracted proboscis ; 

 /, longitudinal muscidar layer ; g, lemniscus. 



Fig. 8. Three eggs, showing the outer («), middle (6), and inner envelope (c) ; 

 also the yolk {d). Magnified 350 diameters. 



Fig. 9. Two of the eggs found divested of their external coverings. 



5. List of the Butterflies of Peru, with Descriptions of new 

 Species. By Herbert Druce^F.L.S.^F.Z.S. With some 

 Notes by Edward Bartlett. 



[Received January 10, 1876.] 

 (Plates XVII. & XVIII.) 



During the past few years Mr. Salvin and I have received several 

 collections from Peru, principally made by Mr. Henry Whitely. 

 I now think it advisable to draw up the following list of the species, 

 only including those that I have been able to examine myself, and of 

 which I am certain of the locality being correct. I hope by so doing 

 to give some idea of the Butterfly-fauna of Peru, as well as to advance 

 our knowledge of the geographical distribution of Butterflies. The 

 collections from which I have made this list were formed by Mr. 

 Bartlett, Mr. Henry Whitely, and Mr. Pearce, in the following 

 localities. 



Mr. Bartlett collected in the eastern part of Peru ; for the exact 

 places visited by him, see map, P. Z.S. 1873, p. 2.52, pi. xxv. 

 Mr. Henry Whitely's principal collection was made in the valley of 

 Cosnipata, situated on the eastern slope of the Andes of Caravaya, 

 and the smaller collections at Paucartombo and Huasampilla, east- 

 ward of Cuzco, at an elevation of about 9000 to 10,000 feet; he 

 also made a very small collection last yeaf at Huiro, valley of 

 Santana, north of Cuzco, at an elevation of about 4800 feet. Mr. 

 Pearce, who travelled in Peru and Bolivia as a botanical collector for 

 Messrs. James Veitch and Sons, the well-known Horticulturists, 

 collected at Pozzuzo and Muna. 



The collections contained 494 species (18 of which I have described 

 as new), representing 133 genera. 



Mr. Bartlett' s collection had been picked over before any spe- 

 cimens came into our possession ; so that this list does not contain 

 all the species collected by him. 



