182 
Psyche 
[October 
usually deposited in a squarish patch upon reeds and other 
aquatic plants overhanging the water. This was an unsigned 
article, presumably written by the editors, Benjamin D. Walsh 
and Charles V. Riley. Very much the same account was pub- 
lished in the Fifth Missouri Report by Dr. Riley. The same 
figure was used but this time it was turned upside down. Packard 
in his ‘^Guide to the Study of Insects” also published the account 
accompanied by the figure. Weed (1889) tells of finding a mass 
of Lethocerus eggs while collecting on the outskirts of Lansing, 
Michigan, July 3, 1882. He says, ‘T found a mass of eggs, 
beneath a board lying at the water’s edge. The eggs gave evi- 
dence of having been freshly laid, and beside them was a living 
Belostoma americanumP In this connection an observation 
made by Professor Parker of Montana is of interest. He found 
giant waterbugs guarding their eggs on the bank of a small 
slough. His statement follows: ^‘This was on June 11, 1921, at 
Ronan, Montana. The eggs were stuck to the grassy bank 
about a foot above the water. The slough was premanent, 
being one of the hundreds of pot-holes which dot the Flathead 
Indian Reservation. As I approached the eggs the male started 
for the water but was captured. The female assumed a fighting 
attitude with the front pair of legs extended and ready for action. 
Whenever anything was brought near her she struck viciously 
at it. Finally she was allowed to grab a stick and hung so 
tenaciously to this that I was able to shake her off into a cyanide 
bottle. The eggs were taken to Bozeman and hatched in the 
laboratory on the 15th of June. The young nymphs lived for 
about two weeks and then died.” The writer has examined 
one of the adults and determined it as Lethocerus americanus 
Leidy. 
Literature Cited. 
Hungerford, H. B. 1919. The Biology and Ecology of Aqua- 
tic and Semiaquatic Hemiptera. Kansas Univ. Sci. Bull., 
vol. XI, pp. 1-341, 1919. (p. 223, says molting under 
laboratory conditions appears to be a precarious process.) 
