
ENTOMOLOGICAL CALENDAR. Rnd 
specific name of odorata has held through the several changes that have 
n made regarding its generic position, though varieties of it have 
been described as distinct species by several authors. It is a pretty gen- 
erally distributed species, ranging from Canada south to the Gulf of 
Mexico, and west to the Mississippi. In habits it is quite voracious and 
shy, preferring muddy ponds and rivers, and overflowed meadows, where 
it can easily hide itself. It is often found covered with a green confer- 
void growth, which also renders it less likely to be noticed. It has the 
habit of climbing trees overhanging the water, and basking in the sun, 
and will drop into the water on the slightest hint that it is observed. 
The two insects inclosed were two species of wingless Ichneumon flies ; 
one of them probably helongs to the genus Pezomachus. ye have several 
Wingless genera, and the genus Pezomachus comprises an immense num- 
ber of species. Mr. E. Burgess informs us that in the pupa state the 
-H.G., Elmira, N. Y.—The moth you send is one of the Sphinges, 
Thyreus Nessus. It was first described and figured by Cramer, a Dutch 
naturalist. It is found from Canada and New Hampshire southward. The 
‘ve of this genus differ from most others of this family, in having a 
Simple tubercle on the tail instead of the usual curved horn, as seen in 
the Potatoe-worm, Sphinx Carolina. 

ENTOMOLOGICAL CALENDAR. 
——8Oo 
te this month the Seventeen-year Locust (Cicada septendecim of 
i. has disappeared, and only’a few Harvest-flies, as the two other 
pa Swe have are called, raise their shrill cry during the dog-days. But 
be year has been marked by the appearance of vast swarms in the 
tory : States, give a brief summary of its his- 
i k. 
se Seventeen-year Locust ranges from South-eastern and Western 
‘setts to Louisiana. Of its distribution west of the Mississippi 
this ‘ate another, until she has laid four or five hundred eggs. After 
She Soon dies. Th 

