1881.] Zoology. 813 
never seen except on the wing. I have, however, occasionally 
seen them sitting upon the muskrat ponds out in the sloughs. 
They often follow a plowman, greedily devouring the worms and 
bugs which are turned up to the surface. Fluttering down very 
gracefully, they pick up their game without setting a foot upon 
the ground! In this manner they requently follow the plow for 
hours, so intent upon their work that they might easily be killed 
with a blow from the plowman’s whip.—Charles Aldrich, Webster 
City, Lowa, May 11, 1881. 
Mate Crustacea PropucinG Eoos.—In the course of his stud- 
ies on the Amphipods of the Adriatic, Herr Neteski found that 
eggs are developed in the testes of the males. These organs are 
in the form of simple tubes, consisting of a germ-gland and an ef- 
ferent portion. Only the hinder half of the tubes produce male 
products, the anterior quite constantly developing eggs, but for 
these there is no special duct. The egg-producing portion has 
much the same microscopic structure as that in which the sper- 
Matozoa are developed, and the rudimentary eggs are only dis- 
tinguished from the spermatoblasts by developing into eggs. The_ 
eggs developed in the male differ from those of the female in the 
Structure of their protoplasm, for the yolk-spheres are not in them 
So distinctly developed, and it would appear that they never be- 
come fully matured. This remarkable phenomenon has not, there- 
fore, any physiological significance, and in structure the organ is 
truly a testis. The author reminds us that Phalangium stands in 
a similar condition. 
Anima Pests In GREENWOOD CEMETERY.—The New York 
Sun, citing the report of the trustees of Greenwood Cemetery for 
1880, says: “ It is noted that chipmunks made their appearance 
in the cemetery during the last year for the first time. The injury 
done by them has been deemed a sufficient cause for their exter- 
number of 375, 148 cats, 40 dogs, 133 snakes, 24 moles and 54 
rats have also been killed. 
Zootocicat Nores.—A nervous system has been discovered by 
Dr. Chun in the Veledlide, a family of Siphonophores; it consists 
fishes has been investigated by Professor McKendrick, who finds 
that it consists of little irregular particles scattered through the 
his work forms a volume of Bronn’s Classen und Ordnungen des 
Thierreichs, The author believes that Bessel’s account of Bathy- 
bius is worthy of all confidence, while he inclines to the view that 
Eozoon is inorganic, he sexual organs of the harvest men 
(Phalangida) have been critically examined by Dr. Blanc, who, 
after describing the testes and ovary, states that in young males 
