List of Illustrations Xili 
PAGE 
Thymallus signifer, Alaska Grayling. ... 1.6.00... 0. cece nec c ener ene neeeee 120 
Thymallus tricolor, Michigan Grayling. ............ 0c cece cece eee e eee eeaee 122 
Osmerys mordax, Smelt. .... 0.6.6 ccc cee cence eet e nen eeataeeeees 123 
Thaleichthys pretiosus, Eulachon or Ulchen............ 600 e cee n eee ee eens 124 
Page of William Clark’s Handwriting with Sketch of the Eulachon (Thaleich- 
WY SPOCUACUS) xed eens s saeiek we 14d AR Ba ed Ox dan PeNae ods soe PAA wae 125 
Mallotus villosus, Capelin. .. 1.0.6. cece cece een eens 126 
Salanx hyalocranius, Icefish .. 11.6... ccc eee eet ene e een ees 128 
SLOMIS- [OF 08. otic ag ie cues wee BEE AEE Ges FE SES ARE Ca eee ea ged 128 
CHGUMOGUS SIOONETS 5.3.0.2 doe $e Uae Berane op nRte pase eh ELEM EE Caw har Spee 129 
Synodus fotens, Lizard-fish. ... 0.2.2... e eee eee eect tees 130 
LPNODS MUTA asia eka ERR ER Be Pk NERS SEARS BER WEEE E BASE Mi RES 131 
COLO MAINS ANLAb si cease Suan Sas its ie iE Pa Be te Ba Mind. la: Sas eT Gg Sh gid ree IBIS 132 
Diaphus lucidus, Headlight-fish. .......... 2.00. c eee e ee eee e eee 132 
Myctophumopalinum, Lantern-fish.........0 060 cee eee eens 133 
Ceratoscopelus madeirensis, Lantern-fish..........0 0660s cece cence ences 133 
Rael as, [UP COS shoe ts a eke Hiden sens ei ain Sia wikeg d Serdele ike wala hua Sel BS aN 134 
Plagyodus jeroo; Lancet-fishs «22.224 5.¢2c0s2 oeevieaae ee peracid ev iwaca cee 135 
Urry PWOUS SULCLMENS oa x56 da. Ba ales AEE RN MN BGS EOE RODS HORSE Semiatien Higels 136 
EUry POLS PROV OPI sacl coals Sine Sea giteam Deb kere ee aes aoe ENS aaa nae Ne Nagel 137 
Argyropelecus. OLferstes s 3a cwtaiadw dense nb ak bese eee es Good cae R eked cae’ 137 
Aldrovandid BF OCIIS8 5 occ s oeile ne Seces wasn was eoa Aiay 2 aS: Mave WRG Rug De aa 138 
Anguilla chrisypa, Common Eel. ..... hike mene Moiese te etalereudeuve dss 143 
Anguilla chrisypa, Larva of Common Eel... 2.0.06... c cece cece eee ene 148 
Simenchelys parasiticus, Pug-nosed Eel... 2.2.20... 0s cee tence eee eens 149 
Synaphobranchus pinnatus. ... 0.0.10 cece ect tte eens 149 
Leptocephalus conger, Conger-eel......-.. 0-6. e eee eee eee eee 150 
Larva of Conger-eel, Leptocephalus conger.......++++-++ sree cere ree ecnnees 150 
NGP10S PEVUISUS sox 812 4 Chas BAe Tews ak Dieaa hus delees Mile Ae aes eeNe Ree aeE I51 
Myrichthys pantostigmius... 0.0.0.0 cece cece tnt net ent e ene I51 
Ophichthus ocellatus. 0.0.0. 00 00 cc ccc e eee ttt nee I51 
Nemichthys avocetta, Thread-eel.... 0... 00-00 e cece cece eect e teen e teens 152 
Jaws of Nemichthys avocettd.... 1.0.06. c eee eee eens 152 
Mier ena 7 ett JOP on ses 5 i aie Base OO RES A ERE RAS PING SERS aS 153 
Gymnothorax berndli. 0 00.0 ccce  ee nenceees 154 
Gymnothorax jordani... 06.2 ccc eect een tenet eee 155 
Gymnothorax moringa, Moray. ... 0.06200 c eee crete ene eee ees 155 
Derichthys serpentinus. 00.0.0 cece c ccc eceecteeee ee es 156 
Gastrostomus bairdi, Gulper-eel 6... 0.6 e cee cette tenes 156 
Notacanthus phasganorus.... 0.0. cece cece eee eens 158. 
Inner view of shoulder-girdle of Buffalo-fish (Ictiobus bubalus), showing the 
WICSOCOLAMOIGS sep seiiwaea, don 2 DB Soares A Se. cate desea Aiea SRAM OR eta owen ee 160 
Weberian apparatus and air-bladder of Carp.. ....---- 6.00.0 s esse eee e eee, 169 
Brycon dentex.. 6.0... s eee e eee Ped males enaun Deane ainda cectantan sd ema rarreeteasre cd 162 
Pharyngeal bones and teeth of European Chub, Leuciscus cephalus........... 163 
