Genus Thymelicus 
Chrysalis. — I can discover no account of any observations 
made upon the chrysalids of this genus. 
(1) Thymelicus brettus, Boisduval and Leconte, Plate 
XLVII, Fig. 40, $ ; Fig. 41, ? (The Whirlabout). 
Butterfly.— The male on the upper side resembles Hylephila 
phylceus, but may be distinguished by the broader and darker 
spots on the under side of the wings. The costal 
and outer margins of the secondaries are also gen¬ 
erally more broadly bordered with fuscous than in 
phylceus , a fact not shown in the specimen figured 
in the plate. The female is quite different from the 
female of phylceus , as will be seen by a comparison 
of the figures of the two sexes. Expanse, $ , 1.15 
inch; $ , 1.25 inch. 
Early Stages. —These are only partially known. 
The caterpillar feeds on grasses. Neuration of the 
The insect is very rare in the North, a few sped- f^enlarged^*' 
mens having been taken in New England and Wis¬ 
consin. It is found commonly in the Carolinas, and thence south¬ 
ward to the Gulf, and is abundant in the Antilles, Mexico, and 
Central America. 
(2) Thymelicus aetna, Boisduval, Plate XLVI, Fig. 28, $ ; 
Fig. 29, ? ; Plate VI, Fig. 42, chrysalis (The Volcanic Skipper). 
Butterfly. — Both sexes are well represented on the upper side 
in the plate. On the under side the wings are paler, with the 
light spots of the upper side repeated. Expanse, 1.00 inch; 
$, 1.25 inch. 
Early Stages. — What we know of these is well stated in the 
pages of Dr. Scudder’s great work. The caterpillar usually feeds 
on grasses. 
The species ranges from New England, Ontario, and Wis¬ 
consin on the north to the Gulf, and as far west as Iowa and 
Texas. 
(3) Thymelicus mystic, Scudder, Plate XLVI, Fig. 22, $ ; 
Fig. 23, $ (The Long-dash). 
Butterfly. — No description of the upper side is needed, the 
figures in the plate being sufficient to enable identification. On 
the under side the primaries are fulvous on the costa at the base. 
The remainder of the primaries and the secondaries are dark fer¬ 
ruginous, with the light spots of the upper side all repeated 
