166 
BULLETIN OF THE BUREAU OF FISHERIES 
gulf during August, 1913 (Bigelow, 1915, p. 279). Like Hyperia, it was far less com- 
mon in 1914, when we took it only once within the gulf limits and occasionally off 
the Nova Scotian coast east of Shelburne (Bigelow, 1917, p. 289); in 1915 it was 
taken at several stations, but never more than one or two specimens at any. Judg- 
ing from the regularity with which it appeared in Massachusetts Bay during the 
winter of 1912-1913 (Bigelow, 1914a, p. 410; six out of nine stations, but only 
one or two examples on each occasion), Hyperoche is at least as common during 
the period from November to February as during the warm months; but it has not 
been detected at all at any of the stations occupied in late February, March, April, 
or May, suggesting that it becomes very rare in the gulf, if it does not entirely 
vanish thence, when the water is at its coldest for the year. 
Our captures of Hyperoche in the Gulf have all been near shore, for the most 
part within the 100-meter contour (Bigelow, 1915, p. 284), but the numbers of 
specimens concerned are too small to throw any light on its bathymetric distribu- 
tion or on the relationship which its occurrence bears to the physical state of the 
waters of the gulf. 
Paratbemisto oblivia 
Parathemisto oblivia has been detected twice in our hauls in the open gulf (sta- 
tions 10032 and 10036, August 16 and 20, 1912) and at three stations off the outer 
coast of Nova Scotia (Bigelow, 1917, p. 289), all in late summer. Doctor Fluntsman 
informs me that it breeds locally under estuarine conditions in the Bay of Fundy 
also. This amphipod is far more abundant in North European waters, where it 
plays much the same r61e as does Euthemisto in our gulf and sometimes occurs in 
shoals right up to the land (Edward, 1868; Tattersall, 1906; Tesch, 1911). 
Oceanic byperiids 
Our stations along the continental slope have occasionally yielded oceanic and 
warm-water hyperiids in some numbers, but it is only on the rarest occasions that 
any of them encroach more than a few miles on to the shelf within the limits of the 
gulf, nor are any of them known from within Georges and Browns Banks (p. 56). 
For the sake of completeness, such records as have been obtained within the geo- 
graphic limits of the present study since 1912 are listed below 81 (for earlier records 
for New England waters, see Holmes, 1905). 
Date and stations 
Species 
July, 
1913, « 
10061 
July and August, 1914 » 
June to Au- 
gust, 1915 
February to May, 1920 
10218 
10219 
10220 
10260 
10261 
10296 
10333 
20044 
20045 
20076 
20129 
Oxycephalus sp 
3 
4 
X 
Phronima sedentaria 
1 
1 
2 
1 
Phronima atlantica 
1 
Phronima sp. 
X 
X 
X 
X 
X 
X 
Phrosina semilunata 
X 
3 
2 
Phronimclla elongata 
Vibilia sp 
1 
° For records between the latitudes of New York and Chesapeake Bay during that summer see Bigelow, 1915, p. 279. 
‘Previously listed in Bigelow, 1917, p. 289. 
81 For descriptions and an account of the general distribution of these hyperiids on the high seas see Bovallius, 1887 to 1899. 
