( *c ) 



the creatures, since such a trivial colour distinction is always 

 maintained and transmitted. Since xerophilus associates 

 with several other species which have similarly developed 

 bands one naturally supposes that the colour of all these is 

 kept uniform for some definite purpose, or, as you would say, 

 so that they may as nearly as possible resemble one another. 

 " In the one case (xerophilus) the banding probably never 

 decreases to such an extent that it plays no part in fife or 

 when the insect is on the wing, while in molokaiensis it either 

 is unnoticeable or at least never conspicuous enough to make 

 this form discordant with the other species among which it 

 flies. 



" On reading this over I see that you might possibly infer, 

 from what I said about ' punctures ' in the abdominal band, 

 that there is a difference in structure. This is not so, but the 

 punctures not reaching quite to the apex of the 2nd segment 

 are excluded from the very narrow apical band of molokaiensis, 

 but included in the rather wider one of xerophilus." 



The habits of Pangonia varicolor, Wied., observed 

 in S. Africa by W. J. Burchell in 1813.— Prof. Poulton 

 exhibited a Pangonia captured by Burchell at Uitenhage on 

 Nov. 27, 1813. The species had been kindly determined as 

 P. varicolor by Mr. E. E. Austen. The specimen, which was 

 one of the group with a very long proboscis, bears " 1332 " 

 in Burchell's handwriting, and under this number, in his 

 manuscript " Catalogus systematicus Insectorum in Itinere 

 per Africam australem extratropicam Annis 1811-1815 

 captorum a Gul. Job. Burchell," he had written the following 

 entry : — 



" Pargenia 



" 1332 ... 27. 11. 13 Uitenhage. 



The fly that sucks the oxen without settling upon them." 



" Pargenia " was probably an erroneous rendering of the 

 generic name. Westermann, as Dr. Guy A. K. Marshall had 

 pointed out at the last meeting, recorded the same fact in 

 1821 (Germar's " Magazin der Entomologie," Bd. IV, p. 427), 

 stating that Pangonia rostrata, L., was only able to attack 

 when on the wing. 



The emergence of Cydia deshaisiana, Lucas (Carpo- 



