1880. ] Zoology. 53 
common and the hairy-tailed moles. According to his observa- 
tions, the latter prefer rather dry ground, while the former is suffi- 
ciently fond of low moist soil to merit its specific name, aguaticus. 
Though the common mole is not aquatic in the sense a mink or 
muskrat is, it voluntarily enters the water and procures a part of 
its food in that element, such as water bugs, worms, &c. It is 
known in Mr. Slade’s locality as the marsh or water mole, the 
hairy-tailed being called the upland mole.—Ldott Coues, Wash- 
ington, D. C. 
Tue Cotton-worm Morn In Ruope Iscanp.—On the evening 
of the 30th of September, a specimen of Aletia argillacea flew into 
my study, in Providence. The moth was in a perfectly fresh con- 
dition and bore every appearance of having quite recently emerged 
from the chrysalis. Its appearance certainly did not bear out the 
theory that all the northern individuals fy northward from the 
cotton belt. Several years ago I captured, in August, on Coney 
Island, in Salem harbor, Massachusetts, several fresh specimens, 
which indicated that they had originated not far from, if not on, 
the little islet on which they were flying in the day time—A. S. 
Packard, Fr. 
Notes on PuyLtopop Crusracea.— We have received from 
Florida, through Mr. C. Gissler, a new Branchipus-like form 
which may be called Streptocephalus floridanus. While the females 
of this genus do not present decided diagnostic characters, the 
male is distinguished by the form of the claspers, whose tips, 
when drawn forcibly straight out, will reach to the end of the last 
pair of feet. The two basal filaments are as in S. texensis Pack. ; 
of the forceps at the end of the claspers, the filaments are much 
shorter and smaller than in S. ¢exensis, so much so that there is 
no need of confounding the two species, and besides in the Flor- 
idian species the processes are less broad and flat, and the inner of 
the two blades of the forceps have but one instead of two teeth. 
While of the same size as S. holmani, the male claspers are very 
much larger, and they are longer than in S. watsoni Pack., from 
Kansas; with the latter species it need not be confounded. It : 
approaches S. fexensis nearest in the robustness of the body, in 
the form and size of the caudal appendages, which are much _ 
stouter than in the other two species, and equal, in length, the ae 
three last abdominal segments. It seems to approach S. similis — 
Baird, which inhabits St. Domingo, but that species is not 
described with sufficient exactness to enable us to compare it 
doh tie | : ee 
From Mr. Gissler we have also received specimens of Zimnets 
gouldii Baird, found by him in March and April, on Long 
sland. From Mr. R. P. Whitfield we have received peame x 
Of Estheria watsoni Pack, collected by Dr. C. A. White on t 
: Vermilion river, Colorado, in company with Lepidurus ri 
Pir A. S Packed Fe O 
