126 
ne eo 
Table of Food of Adult Centrarchide—Continued, 
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No. of specimens examined............ 14 3 4 6 8 24 6 9 27 
Palingweonia \s.502 Sak ec oie co ee a ooas 25 01 U2). wae. 03 52 
Od On abe etre ci) o.e tO oe) cae nee pane OG ere ae 2 leita 08 13 
Sialide.... J iacaes bere chain Se wea eee Ee eee ee Bip ole eg Ok 04 Obl 2. ees OL 
Phryg@anGiaem <6. ioe es i | oa Mtiecres eee epcee ss 03 08 O1tS.. ae 
LY. ABSORB NIDA S22 s05 1 1 Shaw, ve a bia e Ticks «5 ) cacaead peceiul Poe. Ml ea 
Vi. GRUSTACRAY.< 9 2 st ee 07 62 31 + 20 18 03 22 12 
Decapods. aie, eae eee 07! 62 Oly yeccs 20 Ohad a Alp ty Sa 
Te trandecapodes. . occa cau becthicee ie ree Mean Aide cece eens 7 03 22|'. 2. oa 
Entomostraca :.. ck sep itosice ewe tees ae eel di giae 7) eee 12 
Oladocera :.53200 i ine is ee ee ee ‘Tetreee il sat ee 13) 
Ostracods.. é.-- ek 2 eee PP tad Rare Ree | He Sch e otone ¢ 
Copepoda 5... osu. Boas scr aces base eee eee od skied tear eon + 
Vis POLYZOA 2 hs co Re, eat ee ee ere ee ee OD eee een ee 
Vili VEGETATION Se ee ee ellie coe 02 ae 02 DAL hoe a8 12 t 
Mescelluneousie. oc be ee 7s Reh eo Pee eos as Pe | Palen pee aera igre a 
\ 
HapLOIDONOTUS GRUNNiENS, Raf. SHEEPSHEAD. GruntTiInG PERCH. 
This species is abundant in Lake Michigan and the larger rivers, 
occurring in the smaller streams rarely, at periods of exceptionally 
high water. It is sometimes eaten, but is regarded usually as unfit 
for food. 
But six of the twenty-five specimens studied were young, and the 
smallest of these, from the Ohio R., in September, was an inch and 
an eighth in length. Seventy-five per cent. of its food was larve of 
Chironomus and twenty-five per cent. larve of Palingenia bilineata. 
Besides the usual indications that the food of the very young is’ 
made up of minute animals, we see here evidence that this species 
seeks its food from the first upon the bottom. In a specimen two 
inches long, the Chironomus larve fell to fifteen per cent., while 
the Palingenia larve rose to eighty per cent., and other ephemerids’ 
and Cyclops made up the remainder of the food. | 
Four specimens, also from the Ohio, at Cairo, from:two to four 
inches long, were found to have recently fed upon ephemerid larve 
and larve of aquatic beetles, Gyrinide and Hydrophilide, in about 
equal quantities. Only five per cent. of their food was Chironomus. 
Sixteen individuals of medium size were taken from the Illinois 
and Ohio rivers, in April, June, September and October of four dif- | 
ferent years. There was nothing in the contents of these stomachs 
to indicate any difference in food resulting from these differences of ‘ 
