110 BULLETIN NO. 30, UNITED STATES NATIONAL MUSEUM. 



Paga 

 LanielUbrauchiata. 

 Pteriidc. 



t Pogidonomyo , Bronn 92 



P./frarjosa, n. s., Meek, 1877, pi. hi, flgs. 8, 8 a 92-93 



A riculopecten, McCoy 93 



.1. cataetxu. n. 8., Meek, 1877, pi. iii, flgs. 10, 10a, and 10 6? 93-95 



A. ulahensis, Meek, 1860, pi. ix, flgs. 7, 7 a and 6 (and 7 c, and df) 95-96 



A.ocddaneug, n. a.. Meek, 1877, pi. xii, flga. 13, 13 a and 6 9S-97 



Cephalopoda. 

 Gonialiddce. 



Grniiatiten, De Haan 98 



O.goniolobus. n. s., Meek, 1877, pi. ix, flgs. 5, 5 a. 6 98-S9 



UPPER TUIA68IC 6PECIE8. 



MoUusca. 

 Brachiopoda. 



DucinidcB. 



Discina, Lamarck W 



DIscina, sp. undt. Meek, 1877, pi. x, flgs. 3,3 a 99-100 



Lamellibranclnata. 



Pteriidce. 



Halobia, Bronn 100 



H. (Daonella) lommeli, Wissmann, 1841, pi. x, flg. 5 100-102 



Lucinida;. 



Sphcera, Soweiby 102 



S.U'hitneyi, n. s., Meek, 1877, pi. x, figs. 4, 4 Or-c 102 



Mytilidce. 



1 Modiomorpha, H. <k "W 



U.i ovata,n. s., Meek, 1877, pi. x, figs. 1, la 103 



M.riatm, n. 8., Meek, 1877, pi. x, fig. 2 103-104 



Cephalopoda. 



Ortlwceratitidce. • 



Orlhoccrat, Auct 104 



O.blakei, Gabb? 1864, pi. x, fig. 11 104-105 



AMMO.MTOID FORMS OF THE UPPER TRIAB OF NEVADA. 



Clydonitidce, n. f., Hyatt, 1877 107 



*Corocera8, n. g., Hyatt, 1877 107-108 



Clydonites, Hauer 109 



C. Iceviuorsalus, Hauer, 8p.,1860, pi. x, fig. 7 lOft-110 



Trachyceralid(e. 



t Gymnotoceras, n. g., Hyatt, 1877 110-111 



6. rotelliforme, n. s., Meek, 1877, pi. s, flgs. 9, and 9 a 111-113 



G. blakei, Gabb, sp., 18'i4, pi. x, figs. 10, 10 o-<;, and pi. xi, figs. G, 6o 113-116 



Traehyceras, Laiibo 116 



T. u'hitneyi. Gabb, sp., 18G4, pi. xi, figs. 3, 3 o 116-118 



T. jiidicaricum, Mojsisovics, 1869, pi. xi, ligs. 1, 1 a 118 



T.judicaricitm, var. subasperum, Meek, 1877, pi. xi, figs. 2, 2 o and b 118-119 



Arcestidce. 



Arcestes, Sue.ss 119-12(J 



A. f perplanus, n. 8., Meek, 1877, pi. xi,.fig8. 7 and 7 o 120-121 



A.gabbi, n. s., Meek, 1877, pi. x. figs. 6, 6 a and 6 121-123 



Physanuidai. 



X Acrochordiceras, n. g., Hyatt, 1877 124 



A. hyatti. u. s., Meek, 1877, pi. xi, flgs. 5 and 5 a 124-126 



Eutoiiioceras, u. g., Hyatt, 1877 126 



E. laubei, n. s.. Meek, 1877, pi. 10, flgs. 8, 8 a 126-128 



EudiscDceras, ii. g., Hyatt, 1877 128 



E.gabbi. ii. s.. Meek, 1877, pi. xi, flgs. 3 and 3 o 128-120 



JURA681C SPECIES. 



Mollusca. 



Lamellibranchiata. 

 Limidce. 



lAma, Bragui6re 130 



L. (Limatula) erecia, n. s., Meek, 1877, pi. xii, flg. 2 130 



*K6pvs, a lielmct : Kfpos, a honi. t aKpoxopStov, a wart; K«po?, a horn, 



tyufii-ov, iKiki'd : iwtos, back : itepa?. a born. 



