REPORT OF THE STATE ENTOMOLOGIST 1907 1QI 
the female has the second joint about equal to the third in length, 
and longer than the fourth which in turn about equals the fith, 
and 1s about 35 of the length of the second.. The basal joint 
(fused with the tibia) is about % as long as the second joint; 
tarsus and tibia are about equal length. The foretarsus of the 
male is longer than the tibia, and its third joint is longer than the 
second which about equals the fourth, and is twice the length of 
the fifth. 3 
The wings are wholly hyaline (dull hyaline in the subimago) 
with weak cross veins. There are no accessory sectors in the 
median fork, but there are two behind the bisector of the cubital 
fork and the vein Cu, is more or less detached. 
Nymph. Length, 7 mm, with setae 4 mm; antennae, 2 mm. 
This nymph is less depressed in form than others of the genus. 
Its colors are bronzy green and brownish, paler below and on all 
appendages, and sprinkled all over the dorsum with very fine pale 
dots or granulations. There is a pale line across the top of the 
head in front, and there is a pale dot on each of the fore angles 
of the prothorax, and another between the inner basal angles of 
the wing cases; antennae, pale, except the basal segment. 
The body is widest on the mesothorax; the abdomen about. as 
long as head and thorax together; the prothorax is wider than the 
head. Its sides are incurved anteriorly where they end in obtuse 
angles that project forward behind the eyes; the fore femur is much 
stouter than are the other femora, and darker in color externally; all 
the claws are strongly curved, and each is armed beneath with a 
comb of eight or nine pointed teeth. The abdomen is depressed, 
it lacks the double row of dorsal tubercles that is characteristic 
of other members of this genus. In outline it is ovate, widest 
on middle segment, and it tapers more or less abruptly from the 
eighth to the posterior end. Segments 8 and g terminate laterally 
in flat triangular spines. Gills are present on segments 3 and 7, 
and diminish regularly in size from the front backward. The 
inferior respiratory lamina of each is bifid, and its divisions are 
fimbriate-lamelliform. The covering lamellae on each of segments 
2 to 6 overlaps only very slightly the base of the one immediately 
behind it. That of the 7th segment, however, is of small size and is 
wholly covered. The middle seta is longest, and all three setae 
are clothed basally with minute spines and bear long hairs in the 
middle portion, and are bare and darker colored at the tips. 
This is the most generalized nymph yet made known in the 
Ephemerella group of May flies. None of its gill covers are wholly 
elytroid. It has no dorsal abdominal hooks. The thorax is high, 
almost compressed, and the abdomen is only moderately depressed. 
I name this species in honor of little Miss Dorothy Burke, who 
played beside the delightful streamlet wherein I found it. | 
