812 General Notes. | November, 
county, Md., on the Chesapeake bay. The beach at this place is 
composed of white sand, and these little myriapods seem to have 
acquired a reddish tinge with none of the bluish cast so charac- 
teristic of specimens which I have examined from the vicinity of 
Philadelphia. There is so little pigment in the body walls that 
with careful illumination I am able to see the viscera, filled with 
ingesta, very plainly. There are no other differences by which I 
can distinguish the form from P. fasciculatus Say. It may be 
called var. pallidus. 
I wish also to record that all the inland specimens which I have 
found were always observed under the bark of trees, a fact which, 
I think, Mr. Say also records, but these I find invariably on the 
ground and in great numbers underneath the objects mentioned. 
— F. A. Ryder. 
ZootocicaL Notes.—A communication has been found by F. 
W. Bennett between the air-bladder and the cloaca in the herring. 
——tThe structure of the ovary, ovulation, fecundation and the 
first stages of development in the bats has lately been studied by 
Messrs. Van Beneden and Julin. A contribution to the study of 
the structure of the ovary of the mole, ermine and bat ( Vesperugo 
pipistrella) by J. MacLeod, appears in Van Beneden and Bam- 
beke’s Archives de Biologie. A good deal of attention is now 
being paid by anatomists to the nervous system of the lower ani- 
mals, especially the ganglionic centers. A useful tract bearing on 
this subject is Liénard’s “ Constitution de Anneau Œsophagien. 
Mr. J, A. Lintner’s Lepidoptera of the Adirondack region 1s 
an interesting contribution to zod-geography, especially to our 
knowledge of the sub-arctic life of these mountains. It appears 
in the seventh report of the Adirondack Survey. The re- 
searches carried on by the U. S. Fish Commission the past season 
from Newport out to the Gulf Stream, have resulted in the addi- 
tion of a large number of new fishes and marine invertebrates. 
The hauls made in about three hundred fathoms under the edge 
_ of the Gulf Stream revealed a strange mixture of tropical and 
arctic life, with abyssal forms, including many shells and an inter- 
esting new starfish; 150 species new to the coast being dredged 
in a single day.—M. Fabre has discovered that two species 
of Halictus, a genus of bees, are parthenogenetic. They have 
two generations a year; a vernal and sexual one, originating from 
females which, fecundated in autumn 
