Oneida Lake I-islus 377 



to this species uf biilllieatl. Kaust ('iS. p. iS<j) records a treiiiatrxle. Crtpidosla- 

 1111(11/ coniuluin ( ( )sl)<)rii », as parasitic on .hiuiiirus nehulosHS taken from CTiau- 

 tau({iia Lake, New York. Marshall and (jilhert (05. p. 517) rcjiort numerous 

 cestodes from the lj<j<ly cavity antl intestines, including Corallobolhrium and 

 Protcoccpluilus. They also record AcanthtKcphala from the intestine. Wilson 

 ('ly, ]). 231) found liri/asiltis irrsiiolor Wilson on this cattish, and similar ohser- 

 vaticjus were made hy Mvermann and Clark {'20, \'ol. 2. p. 80 ) at I-ake Maxin- 

 kuckee. 1-aKue ( 'JO, p. J85) and Butler ("ly, p. 116) found larval trematodes in 

 the eyes of these bullheads taken from Ut)uglas Lake, Michigan. Several leeches 

 were f(nuid attached to the fins of two specimens (No. 412) taken on the west side 

 of l^keport Hay. .\ dead hullhead (No. y2) was found in Ma])le Bay, with the 

 intestine jirojecting from a lam))rey wound, and a leech, llacmopsis marmoratis 

 (Say ), was attached to the wound surface ( Baker, '16. p. Jy8). 



.Several parasitic cojx-pods are recorded hy Wilson: Ari/ulus macuhsus Wilson 

 ('073. p. 41'j; 'ly. p. 230): Achtercs pimclodi Kroyer ('15, p. 628); liryasilus 

 irrsicolor Wilson ('11, \). 342; 'if), p. 361 ) ; Lcriiacoccra variabilis Wilson {'\(k 

 pp. 338, 3'^>5): Lcniai-oci-ra tortiM Killicott ("lO, pp. 33S. 3^)8). Washiuirn (■8<>) 

 describes the destruction of bullheads (Awciurns) in Minnesota by what was prob- 

 ably Aryulus (cf. Wilson, '04a, p. iiy). The glochidia of the mussel Quadrula 

 are recorded from the gills (Wilson, "16, p. 338) of this bullhead. Pratt ('2},, 

 \>. O3 ) descril)es results of examining six t>f these fish from ( )neida l-ake, from 

 which nematodes iSpiiiitictus), cestodes {Corallobolhrium and I'rotcoccphalus). 

 trematodes (Plaijionhtts ami Allocrcadium \. and acaiithoce])halans { luliinor- 

 liyiitlius) were obtained. 



Other diseased s|K-cimens in our collection are as follows: No. 422, with a 

 fungus-like growth on the injured snout; No. 344. found swimming leibly near 

 the surface, in ChitteniMiga Creek; .\'o. 417, foiuul swinuning feebly near slmre 

 at l^ikejMjrt, its laxly with many deep sores in the skin, some of which had a IiIimkIv 

 apiH-arance; No. 4<K> has lumicrous yellow gramiles in the skin on the throat, Imses 

 of pectoral, ventral and anal fins. Kvermann ami Clark ('20, \<il. 2, pp. 7t^So: 

 \'ol. I, jip. 2()4, 32<)) found Arijuhis maculosus Wilson. Ilrijasdns xxrsicolor 

 Wilson, trematixles an<l .\cantli<K:ephala as parasites on this sjjccies. 



liioiiomic Relations. This is one of the most abundant fishes in the lake, is 

 highly appreciated as a foiKl fish ami brings goixl prices. I.arge numlKTs are soKI 

 in Syracuse markets, mingled with a smaller numlier of natalis { .\dams an«l Han- 

 kinson. '16, p. 15</). It is the only memlnrr of the catfish family which the I'. S. 

 Bureau of l-'isheries has cultivated successfully. The following <|u<itation from 

 Stranahan summarizes the main |Miinls on its culture (Kendall, "lo, pp. 27 3(> I : 

 "Realizing that there is a growing interest in the catfi»h among the planters of the 

 .South and that the combination of lireani and catfish is the U-st for jMinds of small 

 area, esix-cially for those whn want the fish for f<MHl rather than for show or s|)4irt. 

 the writer determineil early in the season fo make a study of the breeding habits 

 of the marbled catfish (./. nehtdosus. the s)K-cies hatche«l .it this station), with a 

 view of producing them in greater ninnlHr> than has been |M>ssilile in the jmst. 



".So far as our exi>erience goes, and U has extended over tweny-five vears in 

 lintb the North ami Sonlh. ilure is but one species of catfish that is really drsirahic 



