CONTENTS. XXI 



CLASS III. PISCES Continued. 



ORDER N. PLECTOSPONDYII Continued. 



Family XXXVII. ri/pnuidn Continued. Page. 

 Genus 10G. Algansea, Girard 211 



337. tincella (Cuvier & Valenciennes) 211 



338. dugesi, Bean 211 



339. sallaii (Giinther) 212 



Genus 107. Hybognathue, Agassiz 212 



Subgenus Hybognathus 213 



340. nuchalis, Agassiz 213 



341. argyritis, Girard 214 



342. hayi, Jordan 214 



Subgenus Dionda, Girard 214 



343. serena (Girard) 214 



344. episcopa (Girard) _ 214 



345. nubila (Forbes) 215 



346. amara (Girard) 215 



347. inelanops (Girard) 216 



348. plumbea (Girard) 216 



ienus 108. Pimephales, Rafinesque 216 



349. promelas, Rafinesque 217 



349a. maculosus (Girard) 217 



3496. coufertus (Girard) 217 



350. notatus (Rafiuesque) 218 



Genus 109. Mylopharodon, Ayres 218 



351. conocephalus (Baird & Girard) 219 



Genus 110. Mylocheilus, Agassiz __. 219 



352. caurinus (Richardson) 219 



Genus 111. Stypodon, Garman 220 



353. signifer, Garman 220 



Genus 112. Semotilus, Rafinesque 220 



Subgenus Leucosomus, Heckel 221 



354. corporalis (Mitchill) 221 



Subgenus Semotilus 222 



355. atromaculatus (Mitchill) 222 



355a. thoreauianus (Jordan) 23 



Genus 113. Pogonichthys, Girard _" 223 



356. macrolepidotus (Ayres) 221 



Genus 114. Ptychocheilus, Agassiz 224 



357. oregouensis (Richardson) 224 



358. harfordi, Jordan & Gilbert 225 



359. lucius, Girard 225 



Genus 115. Gila, Baird & Girard 226 



SCO. elegans, Baird & Girard 226 



361. robusta, Baird & Girard 227 



362. seminuda, Cope & Yarrow 228 



Genus 116. Leuciscus, Cuvier 228 



Subgenus Siboma, Girard 231 



363. crassicauda (Baird & Girard) 231 



Subgenus Tigoma, Girard 231 



364. conformis (Baird & Girard) 231 



365. bicolor (Girard) 232 



366. lineatus (Girard) 232 



367. nigrescens( Girard) 233 



368. purpureus (Girard) 234 



369. intermedius (Girard) 235 



370. niger (Cope) 235 



371. alicise (Jouy) 236 



