REPORT OF STATE ENTOMOLOGIST, 1898 209 
and white, and the skin is minutely spotted with the same color. Prof, 
Slingerland (see citation) states that in the larvae of X. gvoted both 
edges of the stigmatal stripe are well defined, while in those of X. anten- 
nata the upper edge is much broken or indented. He finds that the 
sub-dorsal stripe is more continuous in the latter, it being composed 
of three or four irregular spots on each segment in XX. gvotez. He sepa- 
rates the larvae of Y. daticinerea from those of X. antennata by the posi- 
tion of the stigmatal stripe, which is just above the spiracles, except the 
one at each extremity, in the former species, while in the latter it is 
mostly below the spiracles. 

Fig. 12 XYLINA ANTENNATA (original). 
The moth (fig. 12) is ashy gray with indistinct, rather variable markings. 
Sometimes it resembles X. daticinerea so closely that only an authority 
on the family can separate the species. So close is the resemblance 
between these forms, that at first the larvae depredating on the maples 
were referred by Dr Dyar to X. grotei and X. /aticinerea, the determina- 
tion being based on examples named by Dr Smith some years ago. The 
subsequent studies of the latter have somewhat modified his views as to 
the limitation of these species, and have led to a renaming of those at 
the U.S. National Museum. These forms are undoubtedly very close to 
each other, though Prof. Slingerland has found differences in the male 
genitalia of X. antennata and X. grotet. 
Definition of the species. In opposition to this view, Dr Riley 
regarded the above-named forms as but varieties of the species under 
discussion. 
Writing of this family in 1871, he states that great variability is char- 
acteristic of these moths, that only the more striki: gly marked should be 
described, and adds that no doubt many of the so-called species will 
turn out to be but varieties. In a communication from Prof. G H. 
Hudson of the State normal school at Plattsburg, N. Y., he writes: 
‘After some years of trial and with over 800 specimens for comparison, 
I have come to the conclusion that Xp/ina antennata, X. caticinerea and 
