gg rSeptember, 
Scutulata — though still belonging to the stiffer type, is yet an 
advance toward the other ; being more slender and elongated in form, 
while still retaining the spiracular ridge, the great rugosity of skin, 
and the tapering to the head. "When full-grown, about three-quartera 
of an inch long ; slender, flattened, front segments more rounded, head : 
notched and moveable ; the front and hinder segments very short, so j 
that the legs appear as if placed close together at either extremity. 
In repose it keeps the front segments bent down, but the head and 
neck turned up again, in an uncomfortable-looking attitude, suggestive 
of a " crick " in the neck. Colour pale ochreous, a brown double \ 
dorsal line, showing strong on the head, faint on the front segments, 
confluent and strongly marked behind ; a brown sub-dorsal line, very 
plain and strong on the head to the fourth segment, then almost lost 
till it becomes strongly marked again on the hinder segments, but its 
place is marked at the segmental folds by a pair of dots ; on segments 
5 to 9 j)ale brown oblique dashes reaching from the dorsal to below the 
sub-dorsal line ; the spiracles black, placed on a whitish ridge ; belly 
darker than the back, being suffused with blackish, some darker dashes 
under the spiracles, and a darker, irregular central line. 
These larvae formed compact little cocoons in the sand, and one 
bit up a piece of paper, and made itself a very neat little envelope. 
Bisetata. — Putting imitat^ia in its place as the lengthiest of the 
Acidalia larvae, and rusticata as the stumpiest, bisetata seems to occupy 
a middle station, and, as far as I have seen, to form the connecting 
link between the two forms ; being more slender and of more uniform 
bulk than the short larvae, and more rugose than the long ones. 
When full-grown, length about three-quarters of an inch, in form 
slightly flattened, slender, tapering very gently towards the head, 
which is notched, and scarcely smaller than second segment ; skin 
rugose; bristles slightly clubbed; position in repose something like 
that of scutulata. The colour is variable ; I think I have seen three 
good varieties. 1. Grround colour dingy drab, warmer on the back, 
and duller below ; the six segmental folds between 4 and 10 showing 
as broad blackish-brown bands round the body, and shaped on the back 
by some dark oblique dashes, which reach to the spiracles, into a sort 
of broad, clumsy A, pointing forward ; there is a double dark brown 
dorsal line to be traced where the ground in the middle of each segment 
allows it to be seen. 2. This variety was so dark on the back that the 
segmental folds were no darker than the ground, but the space between 
the double dorsal lines was distinctly paler throughout, and the oblique 
