2(i 



ilariilxT kium kf-iii Z\vi'ilcl niclii' liprrpclicn ", . . . in crniiu'ction \vi1li liis stafe- 

 nient p. ;}52: »Es ist eiii Beweis nielir, dass dio Aale iiicht im gorin_o'sten t'iir 

 (las Fortpflanzungsgescliaft vorberoitet in das Meer hinaustreten«. H l)esides 

 being an intelligent natnralist lie bad also been a little more of a lisberman, 

 be wonld sonn bave seen tliat tlie emigratiug eels all bad a jioenlar ap])ear- 

 ance, i. e. tliat tiiey were silver eols, oels in 1 »reeding-dress. 



Tiie autbor, aftcr 1874, wlio seems (n nio to liave been nearest to olilain 

 a duo to tiie difference in tbe onter appearance between males and i'emales 

 as well as between yellow and silver eels, is Jncohy. In »Der Fisrbl'ang in 

 der Lagune von ('omaccbio 1880«, p. oO, (3), bo tbus gives a very oorrect 

 description ol' tbe little males wiili a nietalbc bistre wbicb emigrate to tbe 

 sea. He says bowever liere »Augen mcist gross« tbongb tliey are ohvays large 

 in tbe silver males; tbe i'eason of tliis, I dåre say, is tliat at ('omaccbio be bas 

 also seen yellow males. 



Loc. cit. p. nO, (2). be describes tlie i'rog-moutbed eels wbicb be caniiot 

 look upon as normal eels. 



Loc. cit p. 50, (1), finally, be describes tbe I'emales. but be says of tbem: 

 :>Wandert im Herbst ins Meer und liiirt aui' zu l'ressen wiibrend dieser Zeit«; 

 tliey are consequently in autuinn strongly marked silver eels, and yet be says 

 of tbem: »Riicken liraun-griin, niemals intensiv scbwarz, Bancli weisslicb-gelb. 

 wenig oder keiu Metallglanz«, and be does not mention tbe eyes. Evidently 

 be bas bere iiad more yellow females tban silver ones to look at, and to distin- 

 guisb between tbese and unite tbe yellow ones witli tbe frog-moutbed eds 

 bas not occurred to bini for one moment, tbougb as above inentioned the 

 fisbernien down tbere so to speak call npon bim to do so. Loc. cit. pp. 47 — 48 

 be says.- »Aus diesem (Tebraucb desselbeii Namens Pasciuto fi'ir /.wei ganz 

 verscbiedene Kategorien, von dessen die eine såmmtlicbe nodi niclit reil'e, 

 also ancb die spater wandernden normalen Weibcben und die Aale mit dem 

 Laii])enorgan umfasst, die anderc sicb aber allein auf die sterilen Weibcben 



beziebt, wt^lcbe niemals wamlern ergiebt sicb eine \'erwirrung, 



die dem Forscber anfangs .... Scbwierigkeiteii bereitet. « Tbis, bowever, is 

 tbe way in wbicb all skillful lisbernien all over tbe world bave looked ujion 

 tbe eels, and will look npon tbem also in future; but 1 tbink it will iio lon- 

 ger causo tbe naturalists any »Scbwierigkeiten«. — 



It miglit seeni ])erliaps tbat Mohiitft and Heincle: »Die Fiscbe der Ost- 

 see 1883«, pp. 144 — 14r), are still nearer Ibe full iinderstanding; for tliey know 

 lliat tbe lisbcniicii dislingnisb lidwceii »/.wt'i Sorten Aale; den iivdnoi und 

 den (icllicii .\al'<; tbcy know, (inally, tbat I.cfli bas t'xprcsseil tbe opinion tliat 



