354 
BULLETIN OF THE BUREAU OF FISHERIES 
layers. Only a few cases of this sort appear in our records, probably because towings 
were seldom made late in the evening and never during the night. At area A, during 
January, 1920, between 5 and 6 p. m., 250 specimens and 120 specimens were found 
in the No. 5 and No. 20 surface nets; at area F, during December, 1920, between 5 
and 6 p. m., 1,380 specimens and 180 specimens were taken in the No. 18 and No. 6 
surface nets; and at area Q, during January, 1921, between 5 and 6 p. m., 2 specimens 
and 2 specimens were caught in the No. 18 and No. 6 surface nets, respectively. On 
one occasion specimens were captured at the surface early in the afternoon (2 to 3 
p. m.), but the sea was rolling, and the sky was partly cloudy and foggy. This 
occurred at area G, in October, 1920, and there were 7 specimens found in the No. 8 
surface net. 
It is evident from the records obtained by our survey and from the distribution 
found by other workers in more northern waters that Neomysis americana may live 
in waters of a wide range of salinities and temperatme. 
As a fish food this form is probably of considerable importance; for it has been 
found in the stomachs of the ocellated flounder, the spotted flounder, the shad, the 
mackerel, and sea herring, sometimes in great numbers. It is of interest that the 
period of maximum abundance during the year 1920, according to our towings, was 
in the early months of the year just before and at about the time when the migration 
of anadromous fishes into the bay occurred. 
STOMATOPODA 
The common squilla, Chloridella empusa (Say), formerly known as Squilla 
empusa Say, has been found in Chesapeake Bay. In June, 1880, it was collected by 
W. G. Taylor; in 1882 it was taken near Barren Island and also at stations 1075, 
1076, 1077, and 1058 by the U. S. S. Fish Hawk ; in October, 1921, it was found in the 
Rappahannock River by W. C. Schroeder, and again by the same collector in May, 
1922, on a trip from Crisfield to Cape Charles. During our cruises a specimen was 
taken at area D in January, 1920. I am indebted for identification and other 
information to the division of marine invertebrates of the National Museum. 
In addition to the specimens mentioned above, which were identified by the United 
States National Museum, other squillas were captured at areas L, L', H, R, X, and B 
which undoubtedly are of the same species. They were collected during the cruises 
of March, April, July, 1916, and March, 1922, from areas distributed from near Cape 
Charles City, not far from the mouth of the bay, to area X, off Bloody Point. It is 
evident from the distribution of this crustacean in Chesapeake Bay that it may five 
in water of widely differing salinities — approximately, according to our records, from 
26.00 per mille or a little more to 16 or a little less. Undoubtedly this form lives also 
in water of a much higher salinity, for it is known to occur along the shores of the 
open ocean. 
Since Chloridella empusa lives in other regions between the tide lines and in 
shallow water and since it is a burrowing form, probably its distribution in Chesapeake 
Bay is more extensive than our records show. 
CUMACEA 
One Chesapeake species of Cumacea has been identified by the United States 
National Museum as probably Oxyurostylis smithi Caiman. This crustacean, for 
which Caiman (1912, p. 676) made a new genus as well as species, is known from Casco 
Bay, Me., to Calcassieu Pass, La. The fact that it is sometimes taken at the surface 
