50 ENTOMOLOGICAL NEWS [Heb «1a 
ferns and caladiums. The stream is extremely pretty and 
ought to be a favorite haunt of many forest-loving species, 
but the day was very dark with intervals of rain and we saw 
no adult dragonflies. After long hunting among the fallen 
leaves and stones of the brook, P. found a larva with extra 
gills along the sides of the abdomen. This we suspect may be 
the larva of Cora, a point still to be determined however.” 
The diary for April 29, 1910, also at Juan Vifias, reads: 
“To-day was exceedingly dark and at times with very thick 
mist, altho’ there was no heavy rain. While A. wrote in the 
morning, P. collected some food for some living dragon-larvae 
gathered here. While so doing he found another and some- 
what larger larva of the sort which we suspect to belong to 
the genus Cora. It is remarkable in having attached to each 
side of some of the forward abdominal segments a finger-like 
gill, a peculiarity possessed by no other American dragon-larva 
as far as known. Our chief interest in larva-raising now centres 
on these two individuals.” 
Still at Juan Vifias, the diary of May 2, 1910, records: 
“With a lunch, rubber poncho and umbrella, the latter two for 
investigating the farther waterfall, I set out for that spot, 
examining the ditch along the [railroad] tracks which carries 
the water from this fall. In going and coming, I found in 
all three of the supposed Cora larvae in this outflow. Those 
found last week lacked the caudal gills which, altho’ forming 
part of the proper equipment of a whole suborder of dragonfly 
larvae, seem to be of indifferent use and value, for many larvae 
lose them by accident or by the bite of a brother or an enemy 
and yet pass their larval existence as tranquilly and accomplish 
their transformations as successfully as their brethren. * * * 
The three larvae found to-day have their caudal, as well as 
their lateral, abdominal gills, which latter have already been 
briefly mentioned. The three caudal gills are very odd-looking. 
They appear as if cut off straight across the tip, instead of 
tapering as usual, the straight edge [i e. tip]then scalloped 
into three points, Each gill is much inflated and, as the gills 
