_Myctophum opalinum_, Lantern-fish 133 _Ceratoscopelus madeirensis_, Lantern-fish 133 _Rhinellus furcatus_ 134 _Plagyodus ferox_, Lancet-fish 135 _Eurypholis sulcidens_ 136 _Eurypholis freyeri_ 137 _Argyropelecus olfersi_ 137 _Aldrovandia gracilis_ 138 _Anguilla chrisypa_, Common Eel 143 _Anguilla chrisypa_, Larva of Common Eel 148 _Simenchelys parasiticus_, Pug-nosed Eel 149 _Synaphobranchus pinnatus_ 149 _Leptocephalus conger_, Conger-eel 150 Larva of Conger-eel, _Leptocephalus conger_ 150 _Xyrias revulsus_ 151 _Myrichthys pantostigmius_ 151 _Ophichthus ocellatus_ 151 _Nemichthys avocetta_, Thread-eel 152 Jaws of _Nemichthys avocetta_ 152 _Muræna retifera_ 153 _Gymnothorax berndti_ 154 _Gymnothorax jordani_ 155 _Gymnothorax moringa_, Moray 155 _Derichthys serpentinus_ 156 _Gastrostomus bairdi_, Gulper-eel 156 _Notacanthus phasganorus_ 158 Inner view of shoulder-girdle of Buffalo-fish (_Ictiobus 160 bubalus_), showing the mesocoracoid Weberian apparatus and air-bladder of Carp 160 _Brycon dentex_ 162 Pharyngeal bones and teeth of European Chub, _Leuciscus cephalus_ 163 _Rhinichthys dulcis_, Black-nosed Dace 164 _Notropis hudsonius_, White Chub 165 _Ericymba buccata_, Silver-jaw Minnow 165 _Notropis whipplei_, Silverfin 166 _Campostoma anomalum_, Stone-roller 167 Head of Day-chub, _Exoglossum maxillingua_ 167 _Semotilus atromaculatus_, Horned Dace 168 _Abramis chrysoleucus_, Shiner 168 _Ptychocheilus grandis_, Squawfish 169