GRAPTA V. 
It appeared to me that Fabricius had described the female of this Umbrosa 
as Interrogation is, and that the only doubtful point was whether he had described 
the corresponding male, or either sex of the other species, as C aureum. But in- 
asmuch as the name C aureum was pre-occupied, that subsequently given to the 
female must extend to its male, and the other species whether really described by 
Fabricius or not, should be regarded as unnamed. I therefore proposed for it the 
name Fabricii. 
As is well known, the larvae that produce these two forms are remarkably 
variable. For several years I had endeavored to ascertain which type of larva 
produced either species of imago or the sexes of either, but with no satisfactory 
result, inasmuch as when I thought the matter determined by one series cf ob- 
servations, the next perhaps would unsettle everything. 
On the 4th June, of this present year, (1871) I noticed two females Umbrosa, 
flying about the hop-vines near my house, at Coalburgh, and had no difficulty in 
capturing them. I enclosed them in a keg over a branch of the vine, covering 
with a cloth. On the 6th, a large number of eggs had been laid, a few of which 
were on the upper leaves of the vine, but the greater part on the cloth. On the 
9th, they were hatching and I removed the larvae to the house and enclosed in a 
breeding-cage. From these I obtained 18 chrysalids, which produced, on 3d July 
and subsequent days, 11 Umbrosa, 5 $, 6 ?, and 6 Fabricii, 1 $, 5 $. 
On the 29th July, and successive days till 5th August, I took eleven fe- 
males of same type, no others being seen, and enclosed in same way as before. 
From these I obtained hundreds of eggs, and separated the larvae therefrom into 
three lots, one comprising those hatched from eggs laid on the cloths, one from a 
large cluster laid on a single leaf, and all others in the third. By 3d September 
many imagos had appeared. From the eggs on cloth resulted 49, of which 29 
were Umbrosa, 14 $, 15$, and 20 Fabricii, 11$, 9?. From the leaf 8 Umbrosa, 
5$, 3 ?, and 6 Fabricii, 4 $, 2 ?, and from the remainder 26 Umbrosa, 14 $, 12 $, 
and 8 Fabricii, 6 $, 2?. 
In each lot of larvae all the different types of coloration known to me were re- 
presented, and there certainly is no connection between either of them and the 
varieties or sexes of the imagos. 
These forms therefore are but one species, and so far it would appear that 
the darker of the two was the type and the other a variety. But although 
I have not been able to obtain females of Fabricii, and to determine this point 
absolutely, yet from the fact that the two forms are invariably found together, 
even where, as in many districts, Fabricii greatly out numbers Umbrosa, and from 
the analogous case of Ajax, I believe that the eggs of Fabricii will also produce 
both types of imago. If this be so neither can be considered as a variety of the 
