( cxiii ) 



There remains the group of species headed by P. charina, 

 lioisd. In all of these the accessory disc is large, the base is 

 abruptly expanded, and the distal portion of the lamina has 

 its sides parallel. The species of this group may be said to 

 be geographical representatives. In P. charina, Boisd. (Cape 

 Colony and Natal), the scent-scale is like a chemist's com- 

 bustion-tube. In P. simana, Hopff. (N.E. Ehodesia; Portuguese, 

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

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

 P. venata, 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 sufiicient 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. Godart'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 



PROC. ENT. SOC. LONO., IV. 1912. H 



