NOTES, CAPTURES, ETC. 183 
conclude that, as no actual difference can be found in larva or 
imago, the two-species theory rests merely on tradition, and must 
be abandoned unless the eggs can be shown to be distinct. I 
should be much obliged for any that may be sent to me this 
month.—G. A. Smattwoop; Willington, Burton-on-Trent. 
Tue Terrurosia Discussion.—It is satisfactory to find that 
my communication on Tephrosia crepuscularia and 7’. biundularia 
(Entom. 98) has called out such good matter as the notes of Mr. 
Doubleday, quoted by the Rev. G. A. Smallwood, and the expe- 
rience of Mr. Adkin and others. There is certainly much similarity 
between the second brood of TJ’. crepuscularia and the single- 
brooded biundularia, but the time of this second appearance aids 
us exceedingly in their determination. I think no one who has 
taken both species could possibly mistake the early brood. Of 
course I am speaking of typical specimens ; the varieties must be 
judged by the date, season, and type occurring in the locality of 
capture. Mr. Harrison surely does not wish us to imagine that 
the time 7’. biundularia occurs in Yorkshire would be a month 
apart from the time of its appearance in Kent; that if an insect 
occurred in Kent say the first week of May, the first week in 
June would be a fair date for its appearance in Yorkshire. It 
does not seem reasonable. I can understand that the insects 
would be later in some seasons, while in others, with the tem- 
perature pretty well the same all over the country during the 
spring months, there would be but very little, if any, difference, 
and in seasons where 7’. biundularia has occurred in the south 
during the last fortnight of April, May 2nd would be a fair date 
for Yorkshire. I have information, however, that the insect 
occurs there generally, some three or four weeks later, and that 
only in early seasons is it found at such an early date. I am not 
surprised that a second brood does not occur in the Barnsley 
district, as the specimens obtainable there are 7. biundularia, 
the single-brooded species. ‘The type of the insect obtainable 
there is exactly the same as our Epping and Darenth forms, and 
my series from Barnsley contains these typical as well as in- 
distinctly marked specimens, and is not made up entirely of 
well-marked varieties. I think the notes quoted by the Rev. G. 
A. Smallwood should be sufficient to convince Mr. Harrison that 
I do not stand alone in stating that 7’. crepuscularia has a brown- 
