90 
Carolina Agricultural Experiment Station. During that year, how- 
ever, Mr. Quaintance found the insect damaging tobacco in many 
localities in Florida, and the writer discovered it mining tobacco 
leaves in Pittsylvania County, Va. Specimens were also received 
from Mr. J. J. Wolfe, of Sandy Run, Lexington County, S. C., who 
stated that he was troubled the same season by this insect, which 
made its appearance early and increased its damage as the season 
advanced. The writer of this bulletin is in- 
debted to Mr. Wolfe for the characteristic name 
of ‘‘split worm,” by which he stated the insect 
was commonly known in his vicinity. He also 
stated that during that year it did more damage in 
his neighborhood than all other insects combined. 
When Professor McCarthy first sent this insect 
to the Entomologist for identification, there was 
found to be some difficulty in ascertaining just 
what it was. On consulting a specialist in the 
group of insects to which this one belongs, it was 
decided to be Gelechia piscipellis of Zeller, an 
insect which has been reared in this country from 
the common horse nettle or ball nettle (Solanum 
carolinense), and under this name it was treated 
in the North Carolina bulletin by Mr. McCarthy, 
and in the Florida bulletin by Mr. Quaintance. 
A more careful study was given to the insect, 
however, during the preparation of this paper, 
and a great similarity was noticed between it and 
an insect which has been known as the potato 
tuber moth, an article on which was published in 
Insect Life (Vol. IV, p. 239 to 242), and which, 
after being recorded as damaging the tubers of 
the Irish potato in Algeria, Australia, and New 
Zealand, made its appearance in portions of Cali- 
fornia, also working in potato tubers; in facet, 
the only difference noted in the series reared 
from potato tubers from California and from 
tobacco leaves in North Carolina was a general 
difference in size. On comparison of the larvee 
and pupze from the two food plants these also 
were found to be identical. 
To settle the matter beyond all question, a series of the moths from 
potato and tobacco were sent to Lord Walsingham, the English author- 
ity on the insects of this group, who confirmed our surmise as to their 
identity; and the tobacco leaf-miner must now be known as Crelechia 
solaneila Boisduval. It transpires also that the same insect has 
been observed injuring tobacco in New South Wales ‘‘ by burrowing 

Fig. 1 .—Work of split 
worm—reduced (original). 

