38 
Feeling an uncertainty in reference to the determination of the species, 
as I had nothing in my cabinet like it with which to compare it, and 
finding no notice of a similar species injuring cabbages in this country, 
I forwarded a specimen to Dr. Grote for examination; he kindly in¬ 
formed me that it was the Orobena rimosalis , Guen. I have adopted 
the older and more comprehensive generic name as one more easily 
referred to than the more restricted genus in which Dr. Grote places 
it, although the latter is the one in which it belongs as the genera 
are now restricted. 
The eggs were not observed, hence it is impossiable to say any 
thing positive in reference to them; as a matter of course they are 
deposited on the plants on which the worms are found feeding; from 
the fact that the worms when quite young were associated in con¬ 
siderable numbers on the same cabbage and often close together, I 
presume the female deposits a number of eggs at one point, probably 
near the base of the outer leaves and most likely on the inside. 
The caterpillar, when full grown, is six or seven tenths of an inch 
long; with sixteen legs; is slender and slightly flattened. Head, dull 
greenish-yellow, with a few scattering hairs on it; mouth parts dusky. 
The dorsal portion of the body, down to the breathing pores, pur¬ 
plish brown, with two or three white, transverse lines on each 
segment, but these extend laterally only to the margin of the sides 
and not to the lower margin of the brown area; a narrow pale yel¬ 
lowish line along the region of the breathing pores; underside pale 
green. On the sides, along the lower margin of the brown color, 
there is a minute, shining, black tubercle on the middle *of each seg- 
.ment; each supporting a stiff black hair; in the yellow line there is 
a black dot at each breathing pore. The black tubercle of the first 
segment is on the margin of the dorsal shield; and those on the sec¬ 
ond and third segments are drawn up toward the back so that they 
are not in a line with those on the remaining segments. On each 
side of the back, just within the margin enclosed by the white trans¬ 
verse lines, on the middle of each segment, is a small white tubercle 
surrounded by a black ring; each supporting a hair. Between this 
upper row of white tubercles, or small pimples, and the lateral row of 
black ones, is another row of small black dots or pimples, one on 
each constriction between the segments, back of the third. The. 
dorsal shield of the first segment, is pale glassy green, clouded 
especially on the sides with fuscous. 
This description was taken from living specimens taken from cab¬ 
bages, November 21st. The tubercles mentioned in the foregoing de¬ 
scription are to be understood as minute pimples or raised points. 
I failed to find any pup® in the garden, and hence connot state 
positively in reference to the places selected in which to undergo 
their transformations. Those in the breeding cages, formed cocoons 
on the surface of the dirt, covering them externally with a layer of 
sand. They are usually exactly oval in form and cylindrical, the 
length varying but slightly from half to six-tenths of an inch. The 
cocoon proper or silken portion is very thin, formed apparently only 
to hold the particles of sand with which it is thickly surrounded. 
The pupa is of a glossy brownish color. The pupa state of the sum¬ 
mer brood (or broods) lasts about seven or eight days; the record of 
those reared being as follows (twenty or more specimens); went into 
