262 



LETTERS TO MR. JANSON [CHAP. xxn. 



infestation in their barrels, but as I gather it may be both 

 from the Eastern and the Western world, and also may be 

 infested by insect pests from whatever may be lying on the 

 wharves, I want to be very sure of my identifications. 



The presence of Ephestia kuhniella(Flour moth) was quite 

 plain, so this I need not trouble you about. But about the 

 " Weevils." I think those of which I enclose specimens in 

 the bottle stoppered with cotton-wool, are the common 

 Calandra (= Sitophilns granarins). I am quite sure C. oryzcc 

 was present, but I do not think I have enclosed any. Messrs. 

 Henderson write me to-day that they are quite sure their 

 barrels took the infestation from oil-cakes which were 

 swarming with S. granarins. To the best of my belief and 



6, 7, Granary weevil ; 2, 3, chrysalis, natural size, and magnified ; 

 8, 9, rice weevil, natural size, and magnified ; 1,4, infested grains, 

 also magnified. 



FIG. 68. (7RANARY WEEVIL, SITOPHILUS GRANARIUS, AND RICE WEEVIL, 

 SITOPHILUS ORYZM. 



search, Calandra only lives on grain, so I fancy that its con- 

 nection with the oil-cakes must be only as a shelter. I know 

 Calandra will resort to remains of bread and milk or ripe 

 apricots near a granary, but I supposed this was in search of 

 moisture. But, nevertheless, as one weevil is so like another, 

 it would be an important help if you would kindly verify my 

 identification for me. 



In the same little bottle are two small not-far-from-globose 

 pubescent beetles, which I thought might be Niptus holo- 

 leucns, but when they came clean I saw they had not the 

 beautiful bright yellow pubescence, nor were they so globose. 

 I do not know them ; you probably will at a glance, and your 



