70 BULLETIN 41, UNITED STATES NATIONAL MUSEUM. 



185'J. (Jii;ai;i>, Chaklks — Continued. 



Kiiiiiil.v Saueu>.«, De Kay 350 



LiiPiDosTEUS, Lac6p 350 



Lepidosteiis leptorhynchus, ii . s 351 



l.cpidosteug (Cylindrosteus) latirof^trii:, ii. s 352 



IjCjiidosteus (Atractosteus) Berlavdirri, ii. s 353 



Paiiiil.V Sturionid^, Swaius 354 



AciPENSER, Artedi 354 



A cipenser hrachyrhynchus, Ay res 355 



Acipenser tranxmontanus, Richards 355 



Aeipenser acutiroslris, Ayres 355 



Acipenser mediro&triii, Ayres 350 



ScAPHiRH YNCHUS, Heck 357 



Scaphirhynchus plaiyrhynchus, Bd 357 



PoLYODON, Lac6p 357 



Polyodon folium, Lacep 358 



Order Holocephali 359 



Family Chim.erid^, Bonap 35!) 



Chimera, Linn 359 



C'himcera collice, Benu 3i)0 



Order Plagiostomi 361 



Suborder Squali 361 



Family Scyluodontid.e, Girard 302 



Triakis, Mull. & Heule 302 



Triakis senii/aseiatus, G 302 



Family Ml'stelid.e. ftirard 304 



3[u>itelus felis, Ayres 364 



Family Cestraciontid.e, Owen , 364 



CESTRACIO>f, Cuv 305 



Cedtracion fmneisci, G 365 



Family Notidanid-E. Owen 366 



Heptanchus maculatus, G 307 



Family Spinacid.e, Owen 307 



A C'anthias, Eisso 307 



A canthias sucklii, G 368 



Suborder Ra.i.-e 369 



Family Ehynobatid.e, Owen 370 



Rhynobatus, B1. Sclin 370 



Rhynobatus productus, Ayres 371 



Family TORPEDINID^, Owen 371 



Narcine calif ornica, G 371 



Family Rajid.e, Oweu 371 



Raja, Artedi 372 



Ilaja Cooperi, n. .s ■. 372 



Uraptera, Mull. &. Henlo 373 



TJraptera binoculata, G 373 



Family Myliobatidje, Owen 374 



Rhinopteea, Kubl 374 



lihinoptera vespertilio, G 375 



Order Dermopteri 370 



Suborder Marsipobranchii, s. Cyelostomi 370 



Family Petrom yzontid.e, ( )wen 370 



Petromyzon, Linn 377 



I'efromyzvn tridentdtus, Gairdn 377 



I'etroiiiyzon clliatus, Ayres 378 



I'ctrdtiiyzon lividus, n. s 379 



Petromyzon 2)lumbeus, G ^. 380 



Petromyzon Astori, n. .s 380 



ICHTH YOM YZON, 11 . g 381 



Jchthyomyzon castaneus, n. s 381 



Ichthyomi/zon hirudo, n. s 382 



Ammoccetes, Dum 383 



A imnocoetes cihariug, n. s 383 



Soolecosoma, n. g 384 



Se.oleeosovia concolor ^= Ammoeoetes concolor. Kirk. 



Scnlecosoma unicolor ^= Amvi. nnicolor, De Kay. 



Scolecosoma borealis~Amm. boreaiis, Agass. 



