( lxiii ) 



resting on the mosquito-net which overlapped the jar, and 

 thus rendered inconspicuous, the grey colouring and diamond- 

 shaped marks harmonising with the lines and dirty-white 

 colouring of the net. 



If it had selected the brown twig of its food-plant, the 

 brown earth at the bottom of the cage, or the dark wooden 

 side of the cage, it would have been markedly visible. 



We must suppose that the position of the mosquito-net in 

 regard to the food-plant was as the tree-trunk would be, and 

 that therefore the larval instinct would seek for no other place. 



Mud Wasps from a nest made in an insect box. — A 

 nest of four cells, exhibited by Mr. Talbot, together with 

 specimens of the wasp, Odynerus (Ancistrocerus) parietum, 

 was built in the groove of a store-box in the Hill Museum, 

 Witley, in the summer of 1915. Two individuals emerged 

 at the end of April 1916, and two others on May 22nd. 



A second nest was made in the groove of a setting-board, 

 but sustained injury. It was not known whether both were 

 made by the same wasp. 



Rare butterflies from French Guiana. — Mr. Talbot 

 also exhibited the following species of butterflies from French 

 Guiana : — 



Papilio coelus, Boisd. c? ?, the 2 mimicked by P. ariarathes, 

 Esp. 2. 



Agrias narcissus, Stgr.* Perhaps the rarest of the genus. 

 No specimens have been recorded for many years. 



Morpho hecuba, L. This is the true hecaba, and differs 

 from the form found on the Amazons. 



Morpho marcus, Schall. (= eugenia, Deyr.). One of tlie 

 rarest of Morphos. It is suggested by Mr. Kaye that this 

 may possibly represent a wet-season form of adonis, Cram. 

 We hope to obtain some data from the collector, which may 

 throw light on the question. 



Morpho adonis, Cram. 



Lord Rothschild and Prof. Poulton remarked on this 

 exhibit. 



* A form of this was found on the Amazon near Obidos by Michaelis, 

 and is described and figured by Fruhstorfer in the "Iris," vol. 15, 

 p. 179, pi. iii. This certainly represents a distinct race and will require 

 a name. 



