68 
THE ENTOMOLOGIST’S WEEKLY INTELLIGENCES. 
B. (errestris. Common. Loudon. 
B. lucorum. Do. Do. 
B. lapidarius. Do. Do. 
B. hortomm. Do. Do. 
B. Latreillellus. Rather local ; Croy- 
don and Brighton ; August. 
B. subterraneus. Local. Brighton; 
August. 
Apathos rupestris. Common. London. 
A. campestris. Do. Do. 
A. Barbutellus. Do. Do. 
A vestalis. Do. Do. 
This list will show that I have had great 
success during the late unfavourable 
season.— Samuel Tibbs, jun., 9, Finsbury 
Place South, Finsbury Square, E.C. ; 
November 19. 
- OBSERVATIONS. 
On the Habits of Bombyx Callunce . — 
I beg to trouble you with the following 
remarks upon the Oak Eggar ( Bombyx 
Callunce), which both yourself and Mr. 
Newman describe as a variety of Bombyx 
Quercus. The following is my descrip- 
tion of B. Callunce, from personal ob- 
servation. 
B. Callunce is found in profusion on 
Greetland Moor, near Halifax. 
Male to 2f ; rich dark mahogany- 
brown, the fore wings having a broad 
transverse semicircular bar in the middle 
of the wing, of a bright fulvous colour; 
this bar is most distinct throughout, one- 
eighth of an inch broad, tapering from 
the front; midway between the bar and 
the body is a white spot, surrounded with 
a dark ring: the fulvous bar extends 
across the under wing, which also pos- 
sesses a margin, of the same breadth and 
colour; the body and head are dark 
above, but lighter underneath. 
Female 3J to 3£ ; of lighter colour 
than the male, the bar being of the same 
colour as in the male, but having a nar- 
rower margin on the under wing ; the 
bar is not shown underneath the wings, 
each wing being half dark and half the 
colour of the bar on the under side. 
Caterpillar. Natural food heath, but 
will thrive on whitethorn and mountain 
ash. It is large when full grown, being 
3| inches in length ; when young it is 
smooth, and of the dark colour of the 
male insect; after the first and second 
changes its colour is somewhat lighter, 
and after the third change of skin the 
ground-colour assumes a beautiful velvet- 
black, which is observed between each 
double segineut, whilst the latter are 
covered with short hairs of the fulvous 
colour of the bar in the imago; a few 
straggling long dark hairs, tipped with 
white, spring up over the downy seg- 
ments, and along each side of the cater- 
pillar is a whitish waving line interspersed 
with grey spots ; the ground-colour of the 
downy segments is dappled grey ; a row 
of pure white oval spots appear in the 
centre of each black segment along each 
side, the largest being on the segment 
near the head, and gradually decreasing 
in size. The uuder side of the body is 
greenish yellow. 
Pupa. Elongated egg-shaped, of a 
grey-brown colour, very compact and 
surrounded by a soft web-like cocoon, 
and found on the surface of the moor 
attached to the base of heath. 
Egy. The female never flies until after 
copulation or depositing her eggs, which 
she lays around the stems of the food- 
plant in May and June. The larvae 
emerge in from fourteen to twenty-one 
days, feed during the summer and 
autumn, undergo three changes, and 
then descend to the roots of heath, where 
they spin a slight web, and so continue 
during the winter months. In the fol- 
lowing spring they again come forth and 
feed during the summer, undergoing 
three or four further changes of skin, and 
make up into pupae during August and 
September. 
Imago. In May and June of the sub- 
