UihUlii l.iikc risliiS 501 



mens, over fmir inches Um^, ha<l taken mostly crawfish, minnows and darters. 

 Shells were also fonnd in the stcjmachs. Sibley ('22, \}. dj ) found in studies of 

 the kfxrk Hass from Lake (ieor>;e that it has a preference for crawfish. Init small 

 fish, insects and snails were also included. I'earse ('21, p. 262) gives the results 

 of fotxl studies of seven Rock Hass ranginf; in size from about four to eight inches. 

 Chironomid larvae or pujiae ha<l l>een taken by s])ecimens of all sizes. The smaller 

 ones had fed extensively uiM)n entomostracans, the larger ones on crawfish. I'earse 

 ('24, ]). 25')) also made studies of the amount of fo<Kl consumed in a day by R«jck 

 Bass confined in aquaria, using ten individuals in his e.xperiment. He found that 

 they consumed an amount e(|ual to 2.46'; their own weight. The f<M)d consisted 

 of minnows. grasshoi)])ers, dragon-fly nymphs, caddice-fly larvae, crawfishes, amphi- 

 pods, snails an<l earthworms. Such studies as these give us something of a basis 

 for calculating the fish jinKluctiveness of a l>ody of water like that of ( )neida L^ike, 

 when taken in conjunction with data on the amount of fish food present, such as 

 found by Haker ('iS) for this lake. Greeley ('2J, p. 63) says that four of five 

 Rock Hass (5'/i-'o inches long) contained only crawfish; and another eight inch 

 fish had three young \'ellow Perch, each al)out 1 ■ • in. long, in its stomach, together 

 with fragments of the water jilant I'allisncrki. 



Plstrihiilioii Records. Most of the Rock Hass that we caught were lo- than 

 three and a half inches in length and were taken from shallow water. • »ur col- 

 lections are as follows: Xo. 5, Lower South Hay: Xo. ~(\. Mouth of Scriba Creek; 

 Xo. SS. ("hittenango Creek: Xo. (/). Ma])le liay ; Xos. too. 102. I.add Hay; Xo. 

 121, Hig Hay: Xo. 124. Fairchild's Hay: Xo. 353, Hrewerton : Xo. 427. Dakin Hay; 

 Nos. -,2^). 5.VA Dunham Island; Xo. 543. Frenchman's Island; Xo. 54(1, Chittenango 

 Creek: Xo. 5<;<>. lirewerton ; Xo. f)8o. Lower .South Hay: Xo. 617, Hrewerton; Xo. 

 4272, Messenger Hay, Sept. <>. \n2j. Larger fish, usually con.siderably more than 

 four inches long, were taken in the following collections: Xo. 76, mouth of Scril)a 

 Creek; No. 309, Lower .South Bay: Xo. 434. Xorcross Point; Xos. 52S. 547, Chit- 

 tenango Creek. The only Rock Hass we got from deep water were in collections 

 Nos. 124, 144. Both were made by trap net near Crass Island Bar, ofV Constantia, 

 in twelve to si.xteen feet of water. Two sjK-cimens alwiut a foot long were seen 

 taken from a trap net in eight to ten feet of water at Maple Hay. ( UtolKT 3. 1920. 



liiiniiirs iiinl Ifisrnse. Forl>es ('88b, p. 10 and '88a. p. 511 > fouml a Rock 

 Bass in the stomach of a pike { lisox liuius), and Fvermann an<I Clark ('20. p. 

 584) mention it taken fronj the stomach of the Water Snake ( .Vn/n.r sifnioii). 

 A 5-iiuli sp«cimin was fotuid in the stomach of a Burbot from Maple Hay. < )neida 

 I-nke. Marshall and (iilliert ('05, p. 518) foinul jwirasitic wornis in thirteen of 

 sixteen s|K-ciniens which they examined — trematiMles in one, nemal<xlcs in three, 

 and .•\canth(K-ephala in twelve. These authors renuirk that 'The entire absence of 

 cestodes is noticeable." l.:iRue ri4. p. 144 > re))orts a cesliKle. f'rut.o, .fluiliis 

 anil'lii/^lilis ( I.eidy I found in this siKvie--, and Linton 1 '<>S. p. 4231 mentions 

 Tacnio oiilliitii Rudolphi. l-'aust ('i8, pp. !S<). n>3 t fmnid the trentatixle- C r«7>i- 

 doslotiiuiH toniuluin ((IslKirn) and AcrotuUanu.< fiinlosa (l.ander) ]>nrasitic upon 

 Rock Bass. Colliert {'ift, pp. 34, 33) found thirty RikU Bass licachcfl at I^^uglas 

 I.ake, the gill chamUTs of which were infested with [wrasitic co|H'|><Mis. Reighard 

 f'15, p. 2321 mentions finiling a l>lind and nuich emacialnl Rmk Bass in Douglas 

 Lake W'iKoii I'll. )i iS")! I'ivrs .111 .iriinitit nl a |i.ir.i-iti<- iihm^imkI I. I:'l:.r.-t 



