252 BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Food of mackerel. 
May 13, in north latitude 37° 48', west longitude 74° 13', 37 fathoms, 
stomachs of mackerel obtained from the schooner Henry Morgantliau , of 
Portland, were gorged with minute phosphorescent entomostraca, re- 
sembling those taken by us with towing-nets in the same locality. 
A separate account of the invertebrates taken by the Grampus has 
been prepared by Mr. Bichard Bathbun and others, to whom the col- 
lections were referred. 
Reproduction. 
Among the fish taken by the schooner Henry Morgantliau, May 13, in 
north latitude 37° 48', west longitude 74° 13', 37 fathoms, I noticed at 
least one well-developed male, and some ovaries of females containing 
eggs, which were apparently almost mature. These fish have been 
schooling daily in the day-time. 
Failure of toll-bait. 
Toll-bait was tried in all waters traversed by the Grampus , but 
always without capturing a single mackerel. 
SCOMBER PNEUMATOPHORUS. 
Capt. Thomas Steelman, of the steamer Nellie C. Rawson , and Captain 
Valliant, reported the occurrence of mackerel 7 to 8 inches long in 
abundance about the middle of August, 1886, from Hereford Inlet to 
Barnegat. Capt. Sol. Jacobs informed us of the report by coasters 
that some schools of mackerel were off Fenwick’s Island in August, 
1886, and they say they caught a few of the fish. 
The schooner M. 8. Ayer was informed that mackerel, some of which 
weighed 1J pounds, were caught during the summer of 1886 off Atlantic 
City, N. J., and sold by boat fishermen to the hotels. Inquiry made 
from a dealer in Atlantic City furnished a corroboration of this state- 
ment. 
Capt. Henry C. Fish informed us that he saw, about September 1, 
1886, four or five very large schools (a thousand barrels) of u Bull-eyed” 
mackerel 7 or 8 inches long. One of the steamers caught some, but 
he did not. The locality must have been off the south shore of Long 
Island. 
June 28.— -Brig H. B. Hussey reports, June 28, Five Fathom Bank 
light-ship bearing west by north 50 miles, saw small school of mackerel. 
These were probably 8. pneumatophorus. 
Willard Eye, jr., was informed by a fisherman at Yarmouth, Nova 
Scotia, that the first chub mackerel caught there he caught in Septem- 
ber, 1886. During that year about a dozen were reported in that vicin- 
ity. In 1887, up to August 15, they were plentiful. Two men, fishing 
from a boat for the ordinary mackerel, caught a dozen a day. 
