674 Wisconsin Academy of Sciences, Arts and Letters. 
Dr. Betten, who made the first determination of this species 
for me for use in another paper (1905), pointed out at that 
time that it did not entirely agree with Walker’s description. 
It perhaps agrees as well as the average of Walker’s species, but 
my specimens are somewhat smaller than the measurements 
given. I have been recently informed by Dr. Betten, however, 
that he has specimens of the genus from 1ST. York which agree 
as well but are as much too large for Walker’s measurements as 
mine are too small, but a distinct species. As he suggests, the 
question may be properly settled only by reference to the type, 
if it still exists. In the meantime, it may be here placed as 
•designates* 
Larva. —Length, 15-17 mm. Width, 3-5 mm. Body in 
life, yellowish or greenish-white, slightly reddish on the dorsal 
side. Head dark brown, shading to black anteriorly and later¬ 
ally. Ground color of pro- and mesonotum grayish-yellow. A 
black Y-shaped band lying along suture of clypeus and median 
dorsal suture of head; the anterior ends of the branches become 
broad and indistinct in the dark background. Clypeus marked 
with median triangle of black dots, and with double row of 
same extending forward into the black portion. A somewhat 
irregular row of larger black spots outside of and parallel to the 
Y-shaped band. Smaller black spots irregularly placed on sides 
of head, becoming indistinct in the black border. Pronotum 
with a dark anterior, and a narrow black posterior border, the 
latter broken in the medial line; two pairs of small oblong spots, 
nearly parallel, on either side of the median line on the poster¬ 
ior half of the segment. A darker band, in which are many 
irregular black dots and blotches, extending diagonally across 
the posterior outer corner of the pronotum, and continuing 
across mesonotum toward the median posterior border. The 
anterior half of the border of the metanotum not distinctly out¬ 
lined : posterior half bordered widely on sides with black, which 
is continued as a narrower band along the posterior edge, but 
interrupted in the median line. A dark patch between the lat- 
* Banks, in a paper appearing after this was in type, ( Tr. Am. Ent. 
Soc., XXXIV, Sept. 1908), distinguishes three varieties of this species, 
of which he considers my specimens to be of the typical form (as he 
has kindly informed me by letter). 
