On North-American Insects. 11 
quently owed their arrangement to the scales, the scales 
degenerated. In isolated cases only did they persist in a 
specialized form over the greater portion of the body (Manide, 
Dasypodide) , otherwise usually upon the tail alone, and fre- 
quently also upon the extremities. Generally, however, they 
are already much reduced in the last-named region, and in 
the case of the majority of Mammals every trace of scales 
has disappeared. But very commonly the arrangement of the 
hairs has still remained, as though they yet stood behind 
scales. In this manner the hairs also point to the former 
presence of scales. 
Contrary to my desire, this paper has assumed the appear- 
ance of a polemical character towards Rémer’s memoir. It 
seemed to me, however, to be of importance that now, when 
‘ it is to be hoped that still further studies in a similar sense to 
that of Romer will advance the questions here touched upon, 
the different views should be accurately expressed and their 
mutual limits defined. By this means we shall attain a 
precise idea of the question at issue, which cannot fail to be 
advantageous. 
Amsterdam, March 13, 1893. 
II.—List of Insects collected by Miss Elizabeth Taylor in 
Western North America in the Summer of 1892. By 
Artuur G. Burier, F.L.S., £.Z.8., &., and W. F. 
Kirsy, F.L.S., F.E.S., &e. 
LEPIDOPTERA. By A. G. BUTLER. 
Most of the species recorded in the following list were 
obtained on the Slave River in the months of June and July. 
The collection is of interest as extending our knowledge of 
the range of species hitherto received from the Rocky 
Mountains, California, &c. Two species are described as new 
to science. 
Of BurrerF.iks twenty-three species are in the collection, 
of which ten belong to the Nymphalidz, four to the Lycexnide, 
six to the Papilionide, and three to the Hesperiidae. 
1. Anosia plexippus. 
Papilio plexippus, Linnzeus, Mus, Lud, Ul. p, 262 (1764). 
9. Winnipeg, Manitoba, 11th September. 
