( ae ) 
A considerable series of specimens of Colias chrysotheme, 
with its varieties ariadne, keewaydin, and eurytheme were 
shown, in order to prove that though these seasonal forms 
are characteristic of particular seasons as a rule, yet that 
they are also to be found in many cases out of season. For 
instance, among several pairs of typical C. ariadne (which is 
the winter brood in the southern and warmest parts of the 
United States), taken at New Orleans, in Louisiana, a few of 
keewaydin occurred, and amongst numerous specimens of 
keewaydin taken at San Bernardino in May, were some of the 
larger and more brilliantly coloured C. eurytheme, which is 
the summer and autumn form, in those localities where 
several successive broods occur. At the same time that 
keewaydin and eurytheme were flying together in a perfectly 
fresh state in the San Bernardino Valley specimens of 
ariadne were taken in the mountains, 3000 feet higher up; 
but there appeared to be much less constarcy among the 
broods in a mountainous country like California than is said 
to be the case in Texas and some of the South-western States. 
Mr. Elwes remarked that another interesting species of Colias 
was C. harfordi, which was only captured at the Cajon Pass, 
on the borders of the desert on the eastern side of the San 
Bernardino Mountains, though it occurs in other parts of 
this region. It is one of those very difficult species of Colias 
in North America, which, though affording certain characters 
by which an experienced eye can distinguish it from other 
forms, is yet so nearly allied to several that its classification 
is a matter of great uncertainty. As illustrative of this 
point Mr. Elwes showed specimens of Colias hageni, from 
Colorado, which outwardly resembles C. philodice very nearly, 
though its larva is said to be different, and which is at the 
same time believed to be most nearly allied to C. chrysotheme, 
Mr. Elwes alluded to the doubts which are expressed by 
American lepidopterists as to the identity of the Colias 
chrysotheme of Kurope (a single-brooded species found most 
commonly in Austria and Hungary, which varies but little) 
with the extremely variable, wide-ranging and many-brooded 
Colias chrysotheme of North America. He stated that though 
male specimens could be picked out of an American series, 
