20 BULLETIN NO. 30, UNITED STATES NATIONAL MUSEUM. 



Page. 



Brachiopoda 25 



Ducina tenuilineata, n. 8., M. & H., 1859 25 



D. manhattanen»ig. n. s., M. &. 11., 1859 25 



Produettis Dplende/M (/) Norwood &. Pratten 25 



P. norwoodi. Swallow 25 



P. rogersi, Norwood & Pratten ; 26 



P. pw«tuJo»H»(/), Phillips 26 



P. pratteniamu, Norwood 26 



P. ealhounianxin, Swallow 26 



Ohoneles remeiiiliana, Norwood & Pratten 26 



O. inucro7ia/n, M. <t H., 1858 26 



Orf/ii>ina cra««a, M. &H., 1858 26 



0. 1/ni hraculvm ?, Schlot sp 26 



O. mugouriensis, Swallow 26 



O. shu mardiana. Swallow 26 



Terebratula millqpunctata.'E.ail 26-27 



Bhynchonella vta, Marcou 27 



Retzia mormonii, Marcou 27 



Spiri f er k^ntw-kensU, ShnmarA 27 



,S. eameratug, Aforton - 27 



jS. hemiplicata. Hall 28 



<S. Zin«(i<w«, riiillips 28 



^pin/er, 28 



/S. planoconvexa, Shnmard 28 



Spirigera tubtilita, Shnmard - 28 



Spirigera ? 28 



Lamellibranchiata 28 



Monotis hawni,'M. &B.., 1858 28 



Mpalina (Mytihis) perattenuata, M. & H., 1858 28-29 



Mynlina squamosa (J. deC.) Sowerby 29 



31. subquadrata, Shnmard 29 



Edmondia ? calhouni, M. & H., 1858 29 



Baker ellin par ra.M. &, H., 1858 29 



Area carbonaria, Cox 29 



Leda subscitula.ld. & H., 1858 29 



Pleurophorus ? subcuneata, M. & H., 1858 29 



Axintit (Schizodut) ovatus, M. &. H., 1858 29 



Axinus rotundatus, Brown 29 



A Uorisma ? learenworthensie, M. &. H., 1858 29 



A. aubeitmata, il. Si. IT., 1858 29 



A.I aUirostrata,'M.&, H., 1858 29 



A.f cooperi, M.&, a., 1858 29 



Leptodomus granoms, Shumard 29 



Gasteropoda 30 



PUxirotomaria humerosa, M. & H., 1858 ". 30 



P. »uW«r6inato, M. & H., 1858 30 



BeUerophon 1 30 



Euomphalus ? 30 



Cephalopoda 30 



Nautilus eceentricus, M. & H., 1858 30 



Fishes 30 



XyitracanthuB areuatus, Leidy 30 



Cladodus oecidentalis, Leidy 30 



Petalodus alleghaniensis, Leidy 30 



15. 



Mkek, F. B., and Hayden, F. V. On a new genus of Patelliform shells from the 

 Cretaceous rocks of Nebraska. <^Am. Journ. Sci., vol. xxix, 2d ser., pp. 33-35, 

 plate i. 1860. New Haven, 1860. 



Genua Anisomynn,* n. g., M. & H., I860. 



Page. 



AnUomyon patelli/ormis, M. &. 11., pi. i, flgs. 1-3. .-■ 34-35 



''Afto-os, unequal; ixvuv, muscle; in allusion to the nnsymmetrical muscular soar. 



