182 REPORT OF THE COMMISSIONER OF FISH AND FISHERIES. 
into globules (pansporoblasts) every one of which contains 2 spores or 
perhaps only faint indications of such. 
Spore.—Not described. 
Habitat.—On branchiz of Perca fluviatilis L. (yellow perch). 
9. Genus et sp.incert. Pl. 6, fig. 1. 
Myxosporidium of Lota vulgaris, Lieberkiihn in Biitschli, 1882, Bronn’s Thier- 
Reich, 1, pl. 38, fig. 20. 
No description. 
Habitat.—Gall-bladder of Lota lota L. (=vulgaris), ling. 
10. Genus et sp. incert. PI. 6, fig. 2. 
Myxosporidium of Lota vulgaris Lieberkiihn in Biitschli, 1882, Bronn’s Thier- 
Reich, I, pl. 38, fig. 24. 
No description. 
Habitat.—Branchie of Lota lota L. (=vulgaris), ling. 
11. Genus incert. (‘‘Myxosporidium”) congri Perugia, 1891. Pl. 6, figs. 3-8. 
Myxosporidium congri Perugia, Boll. Scientif., Pavia, x111, pp. 24-5, figs. 15-20; 
ib., Thélohan, 1892, Bull. Soc. philomat. Paris, Iv, p. 166; Chloromyxum ?? 
congri, Gurley, 1893, Bull. U. S. Fish Com. for 1891, x1, p. 419; ib., Braun, 
1894, Centralbl. f. Bakt. u. Parasitenkde, xv, p. 87. 
Myxosporidium.—Found attached to a calculus-like compact mass 
consisting of fungus (probably Penicillium), bacteria, and crystals. 
Individuals numerous, form variable, movements incessant, slow, ame- 
boid. Perugia observed in some a clear space which he believed to 
bea “vacuole” (pansporoblast), but careful examination failed to detect 
the spores. 
Habitat.—Gall-bladder of Leptocephalus conger (Conger vulgaris), 
eel, collected in August, 1890. 
The generic name Myxosporidium is not in good standing (see p. 206). 
In the absence of knowledge of the spores the generic reference of this 
form is entirely uncertain. 
12. Genus et sp. incert. P1.7, figs. 1-3. 
Psorosperm of Notropis megalops, Linton, Bull. U. 8. Fish Com. for 1889 (1891), 
IX, pp. 359-61, pl. 120, figs. 1-3; ib. Braun, 1893, Centralbl. f. Bakt. u. Para- 
sitenkde, x11, p. 97. 
Cyst.—Globular, discrete or aggregated into clusters, white, with 
minute patches of black pigment from host; size varying from 2°5 mm. 
(single cysts) to 7 by 5 mm. (clusters); wall composed of connective 
tissue, thin, collapsing when punctured, indistinguishable from deeper 
layers of derma, staining deeply with ammonia-carmine. Contents, a 
milky fluid. 
Myxosporidium unknown. 
Spore.—Somewhat top-shaped, one end broadly rounded, slightly flat- 
tened, the other tapering to a point, length 17 uw; breadth 10 yu; thick- 
ness 6. Shell, thick and strong, resisting for a long time the action of 
sulphuric acid and of potassium hydrate solution; shape not changed by 
those reagents, by acetic acid or by glycerin, not staining with carmine; 
showing when viewed on edge an elevated ridge [junction of valves?], 
Capsules could not be detected. Protoplasmic contents appear in most 
cases to be finely granular. Tail absent. 
Se 
