160 ^''"*"'*' 
Sp. 3. laoRiCLPS, Thorns., ibid., p. 302. 
Besides several more not yet ascertained. 
»* Mesothorax with an almost invisible dorsal line ; seuteiluEi 
not margined. ■ 
Gen. APHAXOGiirs, Thorns., Ofv., 1S5S, p. 305. 
Sp. 1. HTALrsTPE>Tfis, Thoms., ibid. 
Sp. 2. TE>-uicoE>-is, Thorns., ibid. 
There are more British species of this genus not yet ascertaine. 
They are the minutest of the group, averaging less than half-a-line i 
length. 
College, Milford Haven : Septemler, 1868. 
OBSERVATIONS ON THE OCCUSRENCE OF SPHIXX COSTOLYVU D 
GREAT BRITAIN. 
BY THE EET. JOH>" HELLESS, M.A. 
My friend. Mr. D'Orville, having seen and captured in his gardi 
an unusual number of specimens of this fine moth during the pa 
autumn, has endeavoured to make some observations which may tend , 
throw some light on its appearance in this country ; and he has kind 
placed Ilia notes in my hands for publication. 
Between August' loth and September 2Sth of this year, he ca 
tured 27 males and 29 females, and 2 more were brought into his hoD, 
by the cat ; but a very large proportion of the total number were e, 
tirely unfit, from their battered state, to be preserved as cabir^ 
specimens. \ 
But this is to be remarked, that the good and the battered spe, 
mens of both sexes occurred together throughout the whole period ; : 
was by no means the case that the first taken were the finest, a, 
the last the worst. 
The first moth was taken on August loth, a female, with its ab^ 
men so flat, that Mr. D'Orville concluded it had deposited all its eg 
A few days later, on capturing a battered female with abdomen eqm, 
flat, he dissected it, and found in it 220 well-formed eggs, thus pror: 
his first conclusion to have been too hasty. On the 21st August, .. 
dissected another female, and found its ova to be quite undevelop. 
mere small green gelatinous spots. On September Sth, he tried a f 
ther experiment ; he shut up a damaged female in a large box, supply i 
her with diluted honey and sugar for food ; on the fourth day after 
found her dead, but he found also that she had laid eight eggs in 
box ; and when he proceeded to open her body, he found not < 
