290 aii 
juniperina, one of the scarcest and prettiest of the British Hemiptera, for which I 
had often sought in vain, and which I certainly did not expect to meet at this 
season, seeing that the time of its appearance is given as July and August. It 
would seem, therefore, that it is a hibernating species. 
I also obtained Eremocoris erraticus (3), not a common species. Perttrechus 
luniger was abundant, in fact, the most numerous species; while of Drymus sylva- 
ticus, usually a nuisance, I saw but two.—J. W. Douetas, Lee: 17th March, 1872. 
Query as to the effect of temperature upon the development of butterflies.—I am 
anxious to find out—for a work on which I am at present engaged—what relation 
temperature has to the distribution of Lepidoptera, and should be exceedingly 
obliged to anyone who “breeds” extensively, if he will note for me the lowest 
temperature at which the ova hatch, and at which the imagos are disclosed, 
in various species. I should be glad to know these particulars as regards any 
species, but more especially in the following butterflies :—Thecla querctis, Vanessa Io, 
Pararge Egeria and Megera, Lycena Agestis and Artaxerses, Colias Edusa, Pamphila 
Sylvanus and Nemeobius Lucina. Of course, the temperature noted must be that 
of the box in which the ova or pupx are.—F. Bucuanan Wut, Perth: April, 1872. 
On the habits of Eupithecia subciliata.—English Entomologists imagine that 
the larva feeds upon maple. According to an old note, the larva was found on the 
30th March, 1852, on oak; but whether in the buds or otherwise, is not stated. 
As the allied tenuiata is also found at that time of year, the statement carries with 
it much probability.—C. Dirvrze (in the “ Stettiner entomologische Zeitung,” 1871, 
p. 210). 
[We incline to the opinion that the English Entomologists are right neverthe- 
less, and that the larva of this species is in some way connected with Acer cam- 
pestre. Herr Dietze finds 58 species of Hupithecia in the neighbourhood of Frank- 
fort-on-the-Main and Wiesbaden.—Eps, | 
Note on the food-plant of Anerastia Farrella.—I hear that Dr. Schleich is breed- 
ing this insect by scores. He had noted a sandy locality where the larve were 
feeding on Anthyllis vulneraria, and in the winter obtained hundreds of the hyber- 
nating larvee in their sand-balls, by simply passing the sand through a sieve. In 
the spring, the larva quit their sand-balls to crawl about and seek a snug corner 
for pupation, and either form elongate cocoons in the sand, or spin up in a corner 
of the box in which they are confined. This insect, originally taken near Yar- 
mouth, in Norfolk, has since occurred in Belgium, in Pomerania, and also on our 
own coast at Deal. It probably may be found wherever the Anthyllis grows on 
sand-hills.—H. T. Stainton, Mountsfield, Lewisham, April 10th, 1872. 
On the relation between generic and specific names.—Owing, I will suppose, to 
the brevity of my note on this subject at p. 254 of this Magazine, I appear to have 
failed in conveying to Mr. Dunning (and so probably to others) the meaning I had 
intended to express, and will therefore say a little more on the subject. 
The main point I wish to establish is this, that the specific or trivial name is, 
according to the laws of ordinary language, a noun; and that, therefore, it is quite 
unnecessary it should be changed in gender, when moved from a masculine-named 
to a feminine-named genus. 
It is clear, according to the laws regulating the formation of language, 
that the question whether a given word is a noun, adjective, or verb, depends not 
upon the source from which it is derived, but the use to which it is put. Iam not 
