264 REPORT OF THE COMMISSIONER OF FISH AND FISHERIES. 



Table of hosts. 



Leyilig.' 



Soylliiim caiiiciila 



Spinax vulg.iiia . 

 ScLuatiua augclus 



Torpedo narke. 

 [Rajabatis ;] .. 



MiiiKaz- 



Scy Ilium.. 

 Pristiuriis 



Squatina 

 Torpedo . 



Eaja . . . , 

 Trygon 



Miistelus L'Bvis 



Scylliura stellare. 

 Acantliias vulfrar 



Torpedo narce 



Torpedo marmoiata. 



Raja clavata 



Myliobatis aquila. 



Latest s-^ 



The 



Galeiis sp 



Galous rnustelus. 



Soylliorliinus canicula L 



Scylliorhinus sp 



Scylliorhinus atellaris 



Pristiuriis melaiiostomus Bon 



Sqnalus acantliias L 



Squatina squatina L 



Squatina sp 



Torpedo torpedo Gmel 



Torpedo sp 



Torpedo marmorata 



Raja sp 



Raja clavata 



Uasyatis sp 



Copiialei'.therus aquila. 



Common 

 names. 



Smooth dog- 

 fish. 



Large-spotted 

 dogfish. 



Spiny dogfish. 

 Angel-fisb. 



Electric ray. 



Skate. 

 Thornback. 

 Stingraj-. 

 Eagle ray. 



*By an evident misprint {rinvenne instead of rinvenni; "he found" instead of ''I found") Perugia 

 (r>oll. Scientif., Pavia, 1890, xil, p. 136) states that Leydig, instead of Perugia himself, found this form 

 in the series of hosts examined by Perugia. 



tMingazzini gives nothing but the generic name of the host. As there is nothing to indicate the 

 identity of the species of hosts with those examined by the other authors, they are noted separately. 



+ This species I regard as distinct (see p. 261). 



95. Chloromyxuin fluviatile Th^lohan, 1892. PI. 89, fiy:. 4. 



Bull. Soc. pliiloniat. Piuis, iv, pp. 173, 176, iig. 2; ib., Gurley, 1893, Bull. 

 U. S. Fish Cora, for 1891, xi, p. 418; ib., Bniuu, 1893, Centralbl. f. Bakt. u. 

 Parasiteukde, xiv, pp. 738, 739; ib., Brauu, 1894, Ceutralbl. f. Bakt. u. Para- 

 siteukde, xv, p. 87. 

 Cyst none. 



Myxosporidium. — The ecto])lasin emits lobed pseudopodise. Eiido- 

 l)Iasm, when young, C(^lorless; when oklerj yellow; color appearing not 

 to be located in special spheres. 



Spore fonnation.— dumber of spores formed in each myxosporidium 

 indefinite. 



Spore. — Nearly regularly spherical; size about 5 to 7yu; shell bivalve ; 

 bearing small, often diificultly visible, spines; ridge present; capsules 

 4; sporoplasm nonvacuolate. 

 Hnhitat. — Gall bladder of Leuciscus [Squalius) ccplinlus L. 

 This species is apparently rather rare; seen only twice; it is nearly 

 related to C. leydigii (Thelohan). 



96. Chloromyxum mucronatum Gurley, 1893. PI. 39, figs. 5, 6. 



(P.s()r()s})eiin of Gadus lota Lieberkiiliu, 1854, Miiller's Arcliiv., pp. 352-3, 

 3G8, pi. 11, figs. 5, 6; ib., Lieberkiihn, 1854, Bull. Acad. Roy. Belg., xxi, pt. 2, 

 p. 22, uauie ouly ; ii>., Leuckart, 1879, Parasitcn des Meusclieu, 2 ed., p. 248, 

 fig. 99a; iZ>., Biitschli, 1882, Brouu's Thier-Reicb, i, pi. 38, fig. 17; ifc., Bal- 

 biani, 1883, Jouru. de Microgr., vii, pp. 201, 203, fig. 45; i&., Balbiaui, 1884, 

 Lt^fous sur les Sporozoaires, pp. 130, 133, fig. 41; ' ib., Leuckart, 1886, Para- 

 sites of Mau, 2 ed., p. 197, fig. 99a; ib., Koch, 1887, Encyklop. d. gesammt, 

 Thierlieilkde u. Thierzucht, iv, p. 94, fig. 6G8, 3.) 

 Chloromyxum mucronatum, Bull. U. S. Fish. Com. for 1891, xi, p. 419; ib., Braun, 

 1894, Ceutralbl. f. Bakt. u. Parasiteukde, xv, p. 87. 



See also below, uuder C. ehgans (p. 266). 



