44 YHE ENTOMOLOGIST. 
have taken it for years past at Windermere, I found the larve 
of this species also mining the leaves of a small fern (Poly- 
podium), the fronds of which were mixed with the Vaccinium, the 
two plants growing side by side.—J. B. Hopexrnson ; Preston, 
Lancashire, January 6, 1886. 
LrepiporTrrous Eae-parasites. —I thought the seven 
parasites which I bred from a single egg of Bombyx trifolit was 
rather startling; but I should not have been so startled if I had 
read the paper, written by Mrs. A. K. Dimmock, Cambridge, 
Mass., and published in ‘ Psyche’ for April—June, 1885, p. 282. 
The author says :—“ The egg of S. excaecatus often harbours very 
minute hymenopterous parasites; more than thirty of these 
Hymenoptera sometimes emerge from a single egg of Smerinthus, 
a fact that will give an idea of their microscopical minuteness.” 
The killing and setting of Telenomus phalenarum from B. trifolit 
tried my patience ; what would it have been with those mentioned 
above.—G. C. BiagneLtu; Stonehouse, Plymouth, Dec. 10, 1885. 
SrripULATION oF Pura& or ACHERONTIA ATROPOS.—Having 
had last season a number of the larve and pupe of Acherontia 
atropos, I paid some attention to the manner in which is produced 
the squeaking noise in the larva, pupa and imago stages of its 
life. I only heard the snapping sound made by the larva on two 
or three occasions, and I believe it is produced by gnashing the 
mandible. The sound produced by the pupa I heard on Decem- 
ber 17th by pressing the thorax of a doubtful pupa. Thinking 
the moth could not release itself from the pupa case, I removed 
the covering from the eyes and tongue. The sound was then 
repeated, and by watching I found that the extended tongue was 
raised in the middle in the form of a bow, and divided at the 
same time from the mouth nearly to the lip, and then being 
quickly depressed and closed, the sound appeared to be produced 
by the junction of the two tubes. I think that the sound made 
by the imago is produced in a similar manner with the tongue 
rolled. I should like some other entomologist to experiment 
with the pupa as I did, and let us know the result.—W. T. 
Pearce; 42, St. John Street, Buckland, Portsmouth, Dec. 26th. 
SOUND PRODUCED DURING FLIGHT OF SpHINGIDm.—I am very 
much inclined to believe all the Sphingide are capable of pro- 
ducing a more or less audible sound. I particularly noticed a 
