Vol. xxii] ENTOMOLOGICAL NEWS 51 
are each [a fifth] as long as the short ‘pudgy’ body, the effect 
is to give the larva the appearance of ‘tail-heavy.’ When first 
taken into the hand these three larvae remained motionless, 
‘playing ‘possum’ as it were for a minute or two, and then 
took to their legs with some speed. In spite of their double 
equipment of gills, the Cora (?) larvae found do not frequent 
a different abiding place from less richly ‘engilled’ dragons, 
their fellow inhabitants being larvae of Hetaerina, Argia and 
common types of Libellulinae.” The ditch in which these 
larvae were found was at this time one to two feet wide and 
rarely as much as eight inches deep; it contained many small 
stones on the under sides of which the larvae were found. The 
waterfall, whose outflow it was, was perhaps thirty feet high and 
was in turn fed by a stream descending in occasional cascades 
through forest from a height of several hundred feet higher. 
We took or saw imagos of Cora chirripa at this waterfall in 
different months, at previous visits, and on April 30 and May 
2, 1910. The altitude at which all the Cora larvae from Juan 
Vifias were found was about 1000 meters, or 3300 feet. 
On April 30, 1910, Mrs. Calvert went from Juan Vinas to 
our headquarters at Cartago, taking with her the Cora larvae 
of April 27 and 20, and placed them in our rearing jars. I 
followed on May 4 with the three larvae of May 2. At 6:50 
P. M. of the same day occurred the great earthquake which 
destroyed Cartago. Its effect upon our larvae in rearing has 
been briefly described in the NEws as quoted, but by the great- 
est good fortune the bottle containing the Cora larvae of May 
2 was the single one—of all our living Odonata— that rolled 
out and escaped destruction from the fallen wall. Two of the 
larvae were alive and were carried in safety to our steamship at 
Port Limon. A second died May 7, and the third, with a 
supply of mosquito eggs to furnish food, started with us on the 
voyage to New York, but expired on May 14, three days be- 
fore we landed. Each larva, as soon as its death was discov- 
ered, was placed in alcohol, but evidently was not in a condition 
for histological study. This fact must be remembered in judg- 
