126 BULLETIN NO. 30, UNITED STATES NATIONAL MUSEUM. 



LOWER SILURIAN 



PRrUOnDIAL PEHIOD. 



PlantcB. 



Oritziana, d'Orbigny 



O. linnarsoni, n. 8., White, 1874 



O. rustica, n. s., White, 1874 



Ani/malia. 



Brachiopoda. 



Acrotrela, Kutorga ; 6 



A.'i subHdua, n. s., White, 1874 6 



Trematis, Sharpo 6 



T. pannvlus, u. s., White, 1874 , 6 



Pteropoda. 



Hyalithes, Eichwald 6 



H. pnmordialis, Hall ? 6 



Crustacea. 



Agnostus, Brougniart 7 



A. interstricta, n. s., White, 1874 7 



Olenellus, Hall 7 



O.gUberii, Moek MSS 7-8 



O. powelli, Meek MSS 8 



CANADIAN PEBIOD. 



Hydrozoa. 



Phyllograptus, Hall 9 



P. loringi, n. 8. , White, 1874 9 



Srachiopoda. 



Acrotreta, Kutorga 9 



A. pyscidicula, n. a., White, 1874 9 



Lingula, Brugnierc 9 



L. f manticula, n. s., White, 1874 9-10 



Strophomena, llafinesquo 10 



S.fontinalis, u. s.. White, 1874 10 



Oasteropoda. 



Bellerophon, Montfort 10 



B. allegoricus, n. a. , White, 1874 10 



Cephalopoda. 



Orthoceras, Broy nius 10 



O. colon, n. s.. White, 1874 _..' 10-11 



Cru.stacea. 



Leperditia, Kouault 11 



L.bivia, n. s.. White, 1874 11 



Megalaspis, Augeliu 11 



Jlf. helemnurus, n. s., White, 1874 11-12 



Dicellocephalus, Owen 12 



D.flagricaudus, n. s., Wliito, 1874 12 



TKENTON PERIOD. 



Hydrozoa. 



Qraptolithug, Liiniajus 12 



G. I LHplograptus) hypni/ormis, n.s.. White, 1874 12-13 



O. qua(r)dritrmcronatHi!, Hall 1 13 



G. ( Climacograptim ?) ramulus, n. s., White, 1874 13 



Rhynchonella, Kischor 14 



is. arj/cniiM-iicffl, 11. 8., Wiiite, 1874 14 



CARBONIFEROUS. 



SUBCAUltONIFEUOUS PEUIOD. 



Polypi. 



Favosites, Lamarck , 15 



F.whitfieldi, Whitn i AThitfiold MSS 15 



Blastoidea. 



Granatocrinvs, Troost 15 



G.lotohlantus, ii. .s., White, 1874 15 



