140 REPORT OF THE COMMISSIONER OF FISH AND FISHERIES, 
Tabular key. 
Species No. 
~ 
2 
Myxosporidium. Cyst. 
| 5 
g op 
Z & 
2 z§ 
Se es Host. 
Si we as Si 
ize = . = ize 
inp.| & 3 Nuclei. 3 23 inant Shape. | Color. 
So a | ee 
bs 2 ° ov ° 
a” & B lee | s 
ee # | ge | 5 
SE Oo =| [=| >) 
5) a a a S 
i ~ oy Ay > 
| 
San b OC POOSOe Eee Rae et Reema WE BART a SA ae) Cen Ewe aed Mek tetra St ris... 
Gregarine ovoid, 65 « long, with a very volumi- | 1to2in Sphor-i|: 222-2. Echinocardium cor- 
nous nucleus and clinorhombic crystals. diam- | ical; datum. 
eter. con- 
taining 
spores 
and rest 
of seg- 
menta- 
tion. 
Spores develop endogenonsly, several within a |.....-..|.-....-.|.------. Gadus morrhua...-- 
lobule, the latter sometimes with an envelop- 
ing membrane; spores at first unsplit. 
Amosboid mass 7°5 to 12 », with blunt processes |........|.....-.-|.--..--- Salmo fario......--- 
and sometimes a tail; ends clear, center con- 
taining many dark corpuscles. 
Breen (oe. a] setae oleate sume care anne leeeeas 2 to 4] Oval..| White.| Anas bos« Apocec 
by 0°7 
7 by 3) Prob-|Blunt,|1,globu-| Appar-|........ con- | Diame-| Glo!n-|Dark ..| Cyclops (in pai... 
to 20) ably|lobu-| lar. ently trac-| ter10;} lar. lar C. strenuus), 
By 6;| not. | late, absent tile, | plas Diaptomus cwru- 
plas- hya- (ef. p. poste-) mode leus, D. richardi. 
modes line. 179.) ro-pe-| cysts 
18 by riphe-| 30-60; 
8 to 48 ral. jelongate 
by 23. tubes 70 
by 24. 
Small and granule-free to larger and granular; | Present; membrane | Abramis brama..--- 
processes rather sharp; in size not equal to a transparent. 
blood corpuscele of the tish; granules extremely 
small, held together by a mucoid substance. 
Consisting of granular protoplasm; very similar | Apparently no true | Percafluviatilis..-.. 
to a Chloromyxum. mucronatum; apparently cyst. 
very variable, oval, lenticular, or dendroidly 
branched; size 27 to 440 «; with or without 
a structureless membrane; pansporoblast bi- 
sporogenetic. : 
{hose (oA al penta sinraawera| an ebeees| come cs|aueeeas| sac tome omac ==) Ua0tR Oba eee 
peel ee etal slnistat= bills nieteiciwinia| oie mete = eiel| com ete ee eee cetiie meee eee mene oe eee Lota lota .---... 5.2: 
ev anable, movements incessant, slow, amoe- |.-...--.|----.---|.------- Leptocephalus con- 
old. ger. 
Seno80| Saciseol -aaeee | laooenaer pacteate bseqncea Gactes 2°5 to |......-.|....--..| Notropis megalops- 
(clus- 
ters) 7 
by 5 
Sacee6| Sd5sed|obeocs| Ssarcane Pres- |......../.----.| 1:09 to| Cylin- |........| Gasterosteus acule- 
ent?? 2°18 by | dzical, | atus. 
0-44. | rarely 
ellipsoi- 
dal or 
spher- 
ileal. 
— 4 on 
