268 MR. .1. WATSON ON THE PLUMULES OR 



Taygetis. — Found in 4 species. PI. VI. fig. ii, exhibits 

 the form of the plumule of T. Rebecca, reminding us in its 

 outline strongly of Pieris Belladonna ; the striae^ however, 

 are very different; and this group does not possess the 

 bulb-and-socket apparatus. 



Zophoessa. — Found in i species. 



Euptychia. — Found in 5 species. See the singular form 

 of that of Canthe, PI. VII. fig. 13, reminding us again, by 

 its large lobes, of some of the Pieridce. 



Erebia. — Found in 13 species. A type shown in PI. VII. 

 fig. 14. 



Chionobas. — Found in 7 species. A most interesting 

 northern group, principally inhabiting Lapland and Nor- 

 way. 



Lasiommata. — Found in 10 species, the forms of Mara 

 and Megara having been figured by Deschamps. 



Satyrus. — Found in 32 species. A type, Bero'e, is shown 

 on PI. VII. fig. 15. The plumule of Janira has long been 

 known. 



Families XI., XII., and XIII. EuRYTELiDiE, Libythe- 

 iD^, and Erycinid.^. — No plumules found. 



Family XIV. Lycenid^. — To these battledore scales I 

 have before called your attention. 



Family XV. HESPERiDiE. — None found. 



Having thus completed an account of observations already 

 made, I annex a Table showing an approximate estimate 

 of the number of species where plumules have been found 

 to exist, and of the genera possessing them. Doubtless 

 there is room for further research ; and I would urge upon 

 all a prosecution of this interesting study. I doubt not 

 that among the Rhopalocera there will be further discov- 

 eries made ; and the Heterocera afford an untravelled field 

 to an observer. It will be very interesting to entomologists 

 to learn whether any plumules are to be found among 

 them, or any other class of scales serving for generic or 

 specific classification. 



