THE ENTOMOLOGIST. 263 
silvery white hairs on each side above, along the eyes; hind 
part silvery. Antenne very short; third joint round. ‘Thorax 
with long silvery white hairs on each side. Abdomen clothed 
with silvery hairs beneath and towards the tip above. 
Femora slightly silvery beneath. Wings quite pellucid; 
veins white. Length of the body 3} lines. Cairo. 
FRANCIS WALKER. 
(To be continued.) 
Entomological Notes, Captures, §c. 
Mr. Fetherstonhaugh’s Crotchets——It appears to me some- 
what odd that, with respect to Crotchet No. 1, both Mr. Newman 
and the Rev. Joseph Greene have quite passed by the question 
raised. Mr. F.’s crotchet, as he very distinctly stated it, is 
that strychnia, by its diffusive power, if inserted into the 
thorax of the living insect would effectually ward off all 
future attacks of mites, &c., from any portion of a specimen 
so killed. This is a simple proposition, which I, for one, 
have been most anxious to see discussed and disposed of; but 
Mr. Newman and Mr. Greene have gone off into a discussion of 
whether camphor is synonymous with grease, and whether it 
or benzole is the most pleasing to the olfactory nerves. Mr. 
Fetherstonhaugh has not stated that strychnia, in its imme- 
diate effect of producing the death of the insect, is at all to 
be preferred to any of the modes of killing already before the 
public, but he has suggested that its use may obviate the 
necessity for having recourse to camphor, benzole, cajeput, 
or any of the other strong-scented matters, to which I would 
apply Mr. Greene’s remark, “de gustibus,” &c. I beg to 
suggest a crucial test: let an insect (say of the Bombycide) 
be killed in the manner suggested by Mr. Fetherstonhaugh, 
and, when set and dry, placed in a drawer with insects 
already affected with mites: ifthe insect killed with strychnia 
escapes attack, then Mr. Fetherstonhaugh will have established 
his point, and done good service to the science of Entomology. 
I will not attempt to follow Mr. Newman and Mr. Greene into 
the grease question; Mr.Newman appears to abjure camphor and 
suggest benzole; Mr. Greene likes the one and abhors the other. 
