LIST OF ILLUSTRATIONS. 



Leuciscus aula, var, hasak— Leuciscus aoia, var. rubella— Letjciscus vulgaris, vae. CHALTBa;us Fronti. 



Scale of Gobhis ...--.. 

 Scale of Leuciscus ----- 



Teeth of Salmon . - - - - 



Skeleton of Perch ----- - 



Skull of Percli with the Operculum removed, to 

 show the Bones of the Head, the Branchial 

 Arches, and the Branchi-ostegal Rays - 



Vertebra of Hen-insr 



Air-bladder of Carp - - - - 



Internal Anatomy of Carp 



Internal Anatomy of Carji - - - . 



Perca fluviatilis - - - - . 



Percarina demidoffii - - - . 



Acerina cernna ----- 

 Acerina schrsetzer - 



Lucioperca sandra ----- 

 Lucioperca volgensis - - - 



Aspro zingel - - 



Aspro vulgaris - - - _ . 



Cottus gobio . - - . . 



Head of Cottus gobio, seeu from the front 

 Cottus gobio, var. microstomus . - - - 

 Head of Cottus microstomus, seen from the 



front 



Cottus gobio, var. ferrugineus - - - . 

 Head of Cottus ferrugineus, seen from the front 

 Cottus poecilopus - ----- - 



Gobius martensii ----- . 



Scale of Gobiiis martensii - - - - 



Blennius vulgaris 



Gasterosteus aculentus ----- 



Gasterosteus aculeatus, var. brachycentrus 

 Lota vulgaris .--.--. 

 Silurus glanis - - - - . 



Cyprinus carpio ----- - 



Cyprinus acuminatus - 



Cyprinus hungaricus - - 



Cyprinus hungaricus - 



Cyprinus carpio (var. hungaricus). Pharyngeal 



Teeth - - . 



Cyprinus regina - - - - . 



Carpio kollai-ii ----- 



Pharyngeal Teeth of Carpio kollarii - 

 Carassius vulgaris ------- 



Carassius moles -.---. 



Carassius gibelio 



Pharyngeal Teeth of Carassius gibelio - 

 Carassius oblongus ------ 



Pharyngeal Teeth of Barbus vulgaris 



Barbxis vulgaris --.--_ 



Barbus plebejxTS ----- - 



Barbus plebejus 



Barbus caninus - - - - 



Barbus petenyi - . . - - 



Aulopyge hiigelii Cfemale) ----- 

 Under side of the Head of Aulopyge hiiselii 



Auloiiyge hiigelii : Lateral line and skin, show- 

 j iug pigment spots ------ 



Aulopyge hii?elii (male) ------ 



Pharyngeal Teeth of Aulopyge hiigelii - 



Gobio fluviatilis 



Head of Gobio fluviatilis, seen from above - 

 Pharyngeal Teeth of Gobio fluviatilis - 



Gobio uranoscopus 



Head of Gobio uranoscopus, seen fi-om above 

 Leuciscus erythroi)hthalmus - - - - . 

 Pharyngeal Teeth of Leuciscus erythrophtbal- 



mus 



Leuciscus erytbrophtba.lmus, var. dergle 

 Leticiscus erythrophthalmus, var. iilotizza 

 Leuciscus erythrophthalmus, var. scardafa 



Leuciscus scardffa - 



Leuciscus erythrojAthalmus, var. macrophthal- 



mus 



Leuciscus idus 



Pharyngeal Teeth of Leviciscus idus 



Leuciscus aula - - 



Pharyngeal Teeth of Leuciscus aula 



Leuciscus adspersus 



Leuciscus rutilus ----- 

 Leuciscus rutilus, var. pausingeri - - - - 



Leuciscus pigus 



Pharyngeal Teeth of Leuciscus pigus - 

 Head of Leuciscus i>igus, seen from below - 



Leuciscus pigus, var. virgo ----- 



Leuciscus friesii 



Head of Leuciscus friesii, seen from above - 



Pharyngeal Teeth of Leuciscus cephalus 



Leuciscus cephalus - 



Leuciscus cephalus, var. cavedanus 



Leuciscus cephalus, var. albus . . . . 



Leuciscus vulgaris - - 



Heads of Leuciscus vulgaris ----- 



Leuciscus vulgaris, var. rostratus 



Leuciscus illyricns - - - - - 



Large scale of Leuciscus illyricus - - - . 



Leuciscus svallize 



Leuciscus ukliva 



Leuciscus turskyi 



Leuciscus microlepis ----- 



Leuciscus tenellus ----- - 



Leuciscus muticellus - - - - . 



Pharyngeal Teeth of Leuciscus muticellus - 



Leuciscus muticellus, var. savignyi 



Leuciscus phoxinus 



Pharyngeal Teeth of Leuciscus phoxinus - 



Paraphoxinus alepidotus . . . . . 



Pharyngeal Teeth of Paraphoxinus alepidotus - 



Tinea vulgaris - - - 



Pharyngeal Teeth of Tinea vnlg.iris 



Chondrostoma nasus 



Head of Chondrostoma nasus, seen from lielow - 



