( ^i ) 



by the Thyridia ; for the species allied to the former, — Methoim 

 themisto, Hiibn., and M. smgularis, Staud., — resemble 3f. 

 conficsa ; while in the Thyridias allied to psidii, — 2)cdlida, 

 Godm. and Salv., ceto, Feld., and cedesia, D. it H., — a compara- 

 tively large section of the pale basal area is visible below 

 the nervure. Thyridia hippodamia, F., presents a condition 

 similar to that of T. psidii. 



There is also a tendency in the Itunas and especially in 

 Eutresis imitatrix, for the median transparent area to be 

 nearly equally divided by the black and prominent vein which 

 traverses it. This tendency is less marked in the Thyridia, 

 and still less in the Methona ; and here too the latter has 

 apparently acted as the model for the former ; inasmuch as in 

 the allied Thyridia cedesia, the area in question is divided by 

 a heavily marked band. 



Finally, the facts of geographical distribution entirely sup- 

 port the conclusion that the transparent species of Eutresis are 

 mimics of Itmia phtnurete and not of /. ilione. The latter is an 

 eastern and southern species : of 1 G examples in the British 

 Museum, 2 are from Rio, 2 from Minas Geraes, 3 from Brazil, 

 2 from S. Brazil, and 7 from Paraguay. /. p)henarete, on the 

 other hand, is a western species : of 15 examples, 10 are from 

 Bolivia, 3 from Peru, 1 from Ecuador and 1 from Tabatinga 

 (Amazons). The three examples of Eutresis imitatrix and all 

 of E. hyspa are from Ecuadoi-, while the single undescribed 

 form is from Peru. 



Papilios from the I\Ialay Archipelago. — Dr. K. Jordan 

 exhibited on behalf of the Hon. Walter Rothschild some 

 interesting Papilionids. Troides alexandrie, Rothsch., remark- 

 able for the beauty of the S f^rid the gigantic size of the 9 , is 

 a new discovery by A, S. Meek, who found this fine insect in 

 the north-eastern portion of British New Guinea at some dis- 

 tance inland from the coast. The species is nearest to Troides 

 victoris from the Solomon Islands, of Avhich a very distinct 

 geographical form {ruhianus) was shown for comparison. The 

 gynandromorphic specimen of Troides exhibited is the only 

 one known of this genus, and was obtained by Dr. L. Martin 

 in South Celebes. It belongs to T. haliphron, the left side 

 being ^ and the right side c?. 



