44 
Psyche 
[June 
Ford, N. 
1926. On the behavior of Grylloblatta. Canadian Ent., 58: 66-70. 
Fries, E. F. B. 
1927. Temperature and frequency of heart beat in the cockroach. 
Jour. Gen. Physiol., 10: 227-237. 
Gurney, A. B. 
1948. The taxonomy and distribution of the Grylloblattidae (Orth- 
ptera). Proc. Ent. Soc. Washington, 50: 86-102. 
Mills, H. B., and J. H. Pepper. 
1937. Observations on Grylloblatta campodeiformis Walker. Ann. Ent. 
Soc. America, 30: 269-275. 
SCHOLANDER, P. F. 
1942. Volumetric micro-respirometers. Rev. Sci. Insts., 13: 32-33. 
SWEETMAN, H. L. 
1938. Physical ecology of the firebrat, Thermobia domestica. Ecol. 
Monographs, 8: 285-311. 
Woodland, J. 
Personal communication. 
Woodworth, C. E. 
1936. Effect of reduced temperature and pressure on honeybee respira- 
tion. Jour. Econ. Ent., 29: 1128-1132. 
The C. Andresen Hubbard Collection of Fleas of the 
Pacific Northwest. — Students of fleas will be interested to learn 
that the Museum of Comparative Zoology of Harvard University 
recently received from Dr. C. Andresen Hubbard a collection of 
carefully prepared and labeled slides representing about 75 species 
and sub-species of western fleas. The slides are neatly put up in 
a case^ together with a numbered index of the forms represented 
and a copy of Dr. Hubbard’s paper on “The Fleas of California” 
(1943). Appropriate gaps are left in the case for additional kinds 
which Dr. Hubbard intends adding from time to time to this set. It 
now contains paratypes of Megabothris clantoni, Epitedia jordani , 
and Corypsylla jordani. The Harvard set is Dr. Hubbard’s “De- 
pository No. 20,” as he is sending similar sets to 19 other institu- 
tions here and abroad, in addition to the “Master Collection” to be 
deposited at the U. S. National Museum. Dr. Hubbard is to be 
greatly commended for his unusual generosity and foresight in dis- 
tributing his material so widely so that it may be available to many 
present and future students of this most fascinating and medically 
important order of Insects. — J. Bequaert, Museum of Comparative 
Zoology, Cambridge, Massachusetts. 
