( xix ) 



Wednesday, May 2nd, 1917. 



Dr. C. J. Gahan, M.A., D.Sc, President, in the Chair. 



Election of a Felloiv. 



Mr. Arthur Dicksee, 24, Lyford Road, Wandsworth 

 Conunon, S.W. 18, was elected a Fellow of the Society. 



Exliihitions. 



A Cbxtoniid from Madagascar. — Mr. 0. E. Janson 

 exhibited specimens of Euchroea coelestis, Burm., a rare and 

 beautiful species of Cetoniidae from Madagascar, and directed 

 attention to the remarkably brilliant pearly blue coloration 

 of the underside of the body. 



Genitalia op certain Species of Calico. — Mr. W. J. 

 Kaye exhibited two cases of Caligo species from the collec- 

 tion of Mr. J. J. JoiCEY as well as from his own collection, 

 together with a number of microscopical mountings of the 

 male genital organs (all prepared at the Hill Museum, where 

 Mr. Joicey gave every facility) to prove that the forms, or 

 hitherto supposed species, atlas from Ecuador and prome- 

 theus from Colombia, were really forms of memnon which 

 more or less typically ranges throughout Central America, 

 and that telamonius, Feld. (= pavo, Rob.) and suzanna, 

 Stich., from Colombia, the former a mountain race, the latter 

 from low elevations or coastal regions; peleus, Stich., from 

 Venezuela, cachi from Costa Rica, menes from Chiriqui, semi- 

 caerulea from S.E. Peru, joasa from Upper Amazons, innu- 

 lanus from Trinidad, teucer from Guiana, jiliorhjs from Bolivia, 

 are all really forms of the variable teucer. The point of 

 difference in separating these two species lies in the long clasp 

 having a serrate edge up to the apex in tnemnon and the tip 

 terminating in two short teeth ; while in all the forms of teucer 

 the serrations stop before the tip, and at the extremity is 

 a bunch of long hair instead of a j)air of teeth. Telamonius 

 at first sight looks very unlike typical teucer from Guiana, 

 but specimens from Venezuela are intermediate in colour 

 and those from Costa Rica are intermediate in size, while 



