200 [February, 
Mr. Hellins tried some of them in a flower-pot with growing? plants of dandelions 
and knot-grass, both of which plants were eaten, but apparently not so freely as 
the lettuce ; but the worst part of the business was that the soil in the pot was in- 
fested with little earth-leeches, which destroyed most of the larvae. The rest were 
treated in the same manner as we had.been accustomed to deal with A. ripos ; i.e., 
placed in a large pot with a quantity of sea sand, their food being laid on the sur- 
face, and here they prospered satisfactorily. 
On October 21st, some had grown about five-eighths of an inch long, and at 
that date figures were taken, and again on November 14th, when the most advanced 
had attained its maximum growth of one inch and one eighth in length. On the 
24th December I had more examples of similar dimensions. 
The larva has a small head and anal segment, the body being plump and 
cylindrical, with a rather semi-circular inflation on the region of each spiracle ; the 
segmental divisions deeply cut ; the legs and prolegs small in proportion. 
The colour of the back is at first dark ochreous brown, but changes gradually 
with its gi'owth to brownish ochreous or dull ochreous ; this tint is bounded on 
either side by the dark brown edge of the sub-dorsal line ; there is a delicate 
mottling of rather darker brown of a pear shape on each segment, its broad end in 
front, through which runs the dorsal line, which is of the brown colour (paler 
when the larva is quite full grown), and is very thin at the beginning but expands 
almost into an elongated diamond form at the end of each segment, and is dis- 
tinctly edged with darker brown, particularly at its widest part. 
The sub-dorsal hne is dark brown, having close beneath it a mere thread of 
very pale greenish grey ; and fi'om this to the spiracles, the sides are greyish 
brown ; another pale thread, much interrupted, running a little above the spiracles. 
Below the spiracles is a very faint trace of a double dirty whitish line, all 
the rest of the lower and under surface being a pale greenish grey tint and 
semi-translucent. 
The head brown, the lobes and mouth marked with darker brown, and very 
shining. A dark brown plate on the second segment having three pale longi- 
tudinal lines. 
The spiracles are black, and the tubercular warty dots very dark brown each 
furnished with a very minute short hair. 
On the 14th January, 1868, I observed one larva no more than half grown, 
whilst the full grown larv^ had lost much of their distinctive markings by becoming 
more unicolorous in tint, a proof of their being now full fed. 
William Buckler, Emsworth. 
Correction of an error. — I suppose I must have fair-copied my sacraria note in 
a hurry, for I see that the last sentence on page 179 does not express what I meant 
to say : " For wo can scarcely suppose that the specimens taken year by year are 
fresh immigrants, or their offspring produced during the warmer months." This 
is what I meant to write — perhaps it would have been clearer if I had made it 
longer : — " are fresh immigrants, or the offspring of immigrants, which arrived in 
time to secure sufficient warm weather for the perfecting of their broods. — 
J. Hellins, Exeter. 
