718 



MK. A. G. BUTLER ON THE GENUS MYCALESsIS. [JlUie 27, 



The animal in its general habit closely resembles the Alligators, 

 and was on this account, by the late Professor Thunberg, in the 

 Univer-ity's collection, named Lacerta alligator. The specimen, 

 which is imperfect, was brought from Sierra Leone, West Africa, by 

 the late Professor Adam Afzelius, and was, together with his other 

 collections, presented many years ago to this University's Zoological 

 Museum. 



8. Remarks upon the Fabrician species of the Satyride Genus 

 Mycalesis ; with Descriptions, and Notes on the named 

 varieties. By Arthur G. Butler, F.Z.S. 



The scarcity of figures of the Fabrician insects, and the culpable 

 carelessness noticeable in the descriptions of that author, more espe- 

 cially the bad habit which he had of describing the same species 

 twice under separate names, has made the determination of his species, 

 at all times, a work requiring much time, labour, and patience. 



The existence of several types in the Banksian collection, of course, 

 aflfords most important assistance to the student ; but as the labels 

 upon these types have in some cases been transposed, it is at all times 

 necessary to compare the insects carefully with their descriptions. 



Fig. 1 . Mycalesis sirius. 

 2. • persevs. 



Figs. 3, 3 a. Mi/caks/s terminus. 

 4. blasi2(s. 



I have recently been working out the genus Mycalesis, and I find 

 that little or no notice has been taken of the Fabrician specimens, 

 the necessary consequence of which has been that several of his 

 species have been referred to genera with which they have no con- 

 nexion, whilst the insects themselves have been redescribed, and thus 



