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German and British E. Africa, and Uganda), the scent-scale is 

 of similar character, but larger and also broader in proportion. 

 P. vcnata, Butl., from the White Nile, has a shorter and 

 broader scent-scale of the like pattern. The scent-scale of 

 P. liliana (coast region of Mombasa) is very peculiar. It 

 resembles in outline the thin glass flasks used in chemical 

 laboratories, but its neck (which is much shorter than in 

 P. dixeyi) has a decided list. The accessory disc is figure-of- 

 eight shaped and unusually large. Some specimens of P. 

 liliana are not easily separable from P. simana, though the 

 latter is usually a smaller insect. A glance, however, at the 

 scent-scales is sufficient to distinguish them at once. 



The ordinary scales in Pinacopteryx are very often spatu- 

 late. 



A word may be said in conclusion about the interesting 

 butterfly named by Godart Pieris doxo. God art's actual 

 specimen was included in the Dufresne Collection, and is 

 now in the Edinburgh Museum of Science and Art. The 

 locality from which it came is quite unknown. An examina- 

 tion of the specimen, which I have lately been enabled to 

 make by the kindness of Mr. Eagle Clark and Mr. Percy 

 Grimshaw, has convinced me that it is certainly a female 

 Pinacopteryx, but not, as has been thought, P. venata. It 

 appears to me to be most probably a somewhat pale specimen 

 of P. simana. It is very like examples of the latter from 

 Uganda. 



I may here draw attention to Mr. Grimshaw's paper 

 on Godart's Lepidopterous and Olivier' s Coleopterous types 

 in the Dufresne Collection at Edinburgh. The paper, which 

 is to be found in the Transactions of the Royal Society of 

 Edinburgh, vol. xxxix, Part I, 1897, is perhaps not so widely 

 known as it might be. It is accompanied by a plate in which 

 cxiv] 



are figured eight of Godart's and two of Olivier's types ; the 

 former including a representation of the type of P. doxo. A 

 photograph of this specimen, now exhibited with specimens 

 of P. simana $ for comparison, I owe to the kindness of 

 Mr. Grimshaw. 



Protective Resemblance. — Mr. A. Bacot exhibited an 



