266 BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Themisto bispinosa, moderately abundant; 1 young Cumacean; Sagitta , 
abundant; 3 species of annelids, including Tomopteris , few; Spirialis , 
sp., abundant. The following insects were also taken : Psyllobora 20- 
maculata , 1 specimen ; Erioptera (?), sp., 1 specimen; Limnophila (?), sp., 
1 specimen ; Anthomyia , sp., 4 specimens ; Drosophila , sp., 1 specimen. 
May 23, 6 a. m. (lat. 39° 44' N., long. 73° 46' W.) ; small net, quan- 
tity 4 drams. Consisted mainly of copepods and larval crustaceans of 
several kinds. Temora longicaudata was the most abundant of the cope- 
pods, with Centropages typicus , common, and Candace pectinata , rare. 
The following were also represented: Fish eggs, common; Themisto bis- 
pinosa (?), very young, rare ; Tomopteris , sp., 1 specimen; Sagitta , few; 
Clione limacina , few ; Spirialis , sp., few. 
May 23, 8.20 p. m. (lat. 40° 19' FT., long. 73° 06' W.); small net, quan- 
tity 2 drams. Composed mostly of copepods ( Centropages typicus , OuZ- 
sp., and Temora longicaudata ), with an abundance of fish eggs and 
decayed sea-weed. Sagitta was common, and Themisto bispinosa , young, 
and larval crustaceans were rare. One specimen each of the follow- 
ing insects were also observed : Goniomyia (?), sp., and Nemotelus , sp. 
May 26 ; Fort Pond Bay, Long Inland, N. Y. ; small net, quantity 1J 
drams. Composed mostly of amphipods ( Calliopius Iceviusculus BcecJc) 
and copepods, the latter apparently consisting exclusively of Temora 
longicaudata . Fish eggs were abundant, and there were also two spec- 
imens of Pleurobrachia rhododactyla. 
May 30, 9.30 a. m. ; Narragansett Bay, B. I. The following species 
were taken in the dip-net : Calliopius Iceviusculus , 1 specimen ; Idotea 
irrorata , 10 specimens ; and Idotea phosphor ea, 1 specimen. 
CONTENTS OF THE STOMACHS OF MACKEREL. 
May 10 (lat. 38° 07' N., long. 74° 2F W.), the stomachs were taken 
from a number of mackerel, and they or their contents were preserved 
in four jars of alcohol. The stomachs being preserved, with their con- 
tents, in three of the jars, give us the means of measuring their capacity, 
which averaged 4 drams each, the stomachs being much distended and 
tightly packed with food. The contents of one stomach consisted almost 
exclusively of adult Themisto bispinosa , which gave to the mass a dark 
purplish or purplish brown color. Temora longicaudata and Nematode 
parasites were also present in small numbers. In eight of the stomachs 
the bulk of the contents consisted of copepods, mostly Temora longi- 
caudata , with Pleuromma , sp., very abundant. Spirialis, sp., was abun- 
dant, and Themisto bispinosa , common, the latter being conspicuous from 
its darker color and larger size, but forming a comparatively small pro- 
portion of the mass. Nematode parasites were also common, and fish 
eggs rare. 
May 13 (lat. 37° 48' N., long. 74 ° b 13' W.), a number of mackerel were 
obtained from the fishing-schooner Henry Morganthau, caught with a 
purse-seine ift a depth of 37 fathoms. Thirteen stomachs, with their 
