Saturniidae 
(2) Samia gloveri Strecker, Plate XII, Fig. 4, $ . (Glover’s 
Silk-moth.) 
This species, which may be distinguished from the preceding 
by the more obscure, purplish color of the outer band, which 
in S. cecropia is bright red, ranges over the region of the Rocky 
Mountains from Arizona in the south to Alberta and Assiniboia 
in the north. A small dwarfed form has been taken upon the 
high mountains of Colorado, to which Neumoegen gave the sub¬ 
specific name reducta . 
(3) Samia Columbia Smith, Plate VIII, Fig. 8, $ . (The 
Columbian Silk-moth.) 
This species, which is well represented in our plate, may be 
discriminated from its allies by its smaller size, and by the 
absence of the reddish outer shading of the transverse white line 
which crosses the wings about their middle. It ranges from 
Maine to Wisconsin, never, so far as is known at present, rang¬ 
ing south of the forty-first parallel of north latitude. While 
closely allied to S. gloveri, it is much smaller, and the larva 
shows marked differences. The caterpillar feeds upon the larch. 
(4) Samia rubra Behr, Plate VIII, Fig. 2, $ . (The Ceano- 
thus Silk-moth ) 
Syn. ceanothi Behr; emyalus Boisduval; californica Grote. 
The species which is easily separated from its congeners by 
its small size and prevalently redder cast of coloration, is found 
on the Pacific coast, ranging eastward to Utah and Wyoming. 
The larva feeds upon Ceanothus thyrsiflorus. 
Genus CALLOSAMIA Packard 
The structure of the moths of this genus is much like that of 
the preceding genus, but the species composing it may invari¬ 
ably be discriminated from others by the fact that the pectinations 
of the antennae of the females in the anterior pair on each joint 
are shorter than the posterior pair. The genus contains several 
species, two of which are common in portions of our territory, 
and the other is a straggler into our fauna from Mexico. 
(1) Callosamia promethea Drury, Plate I, Fig. 2, larva; 
Plate XI, Fig. 11, Fig. 12, $. (The Spice-bush Silk-moth.) 
Every country boy who lives in the Atlantic States is familiar 
with the cocoons, which in winter and spring he has found 
84 
