1879-] 



The Paleontologist. 



31 



Genus SAGENELLA. (Hall ) 



108/ S — striata. James. 



Syn. S. (Crateropora) lincata. Ulrich. 

 Syn. S. ( ) expansa. Ulrich. 



S. (CrateroporaV ereda. Ulrich, seems to be 

 another Syii. for the same Sp. The writer has 

 what he thinks evidence of this in specimens 

 partly striated, and partly showing cells mneh as 

 figured by Mr. Ulrich. 



Genus RAPALONARIA. (Ui.RiCH.) 

 108^ R — venosa. Ulrich. 



PTEROPODA. 



G"cwH5 CONULARIA. (Miller.) 

 Ii5« C — formosa. Miller & Dyer. 

 Syn. C doani, Dennis. 



CEPHALOPODA. 



Genus ORTHOCERAS. ^Breynius.) 

 125a O — hindei. James. 

 126a O — meeki. Miller. 



Genus ENDOCERAS. (Hall.) 

 131^ E — magniventrum. Hall. 



Genus TROCHOLITES. (Conrad.) 

 137a T — circularis Miller & Dyer. 

 137^ T — minusculus. Miller & Dyer. 



Genus CYRTOCERAS. (Goldkuss.) 

 138a C — amoneum. Miller. 

 139 C — magister. Miller. 



(note, obscunun, the latter preoccupied.) 



GASTEROPODA. 



Genus CYCLONEMA. (Hall.) 

 143 C — conica. Miller. 



(Mr. Miller seems to have abandoned this name 

 as it is not placed in his Catalogue of Palajozoic 

 Fossils. It is one of the forms of C. fluctuata.) 



144a C — minor. James. 



Genus PLEUROTOMARIA. (Defrance.) 



152a P — dryope. Billings. 



'55 P (') — parvulus; should read 184 Cy- 



clora parvula. Hall. 

 159 P — ohioensis. James, not trilineata — 



the latter preoccupied. 



Genus MURCHISONIA. (D'Archiac & 



Verneuil. ) 

 164 M — milleri. Hall, not bicincta — the 



latter preoccupied. 

 165(2 M — multigruma. Miller. 



Genus BELLEROPHON. (Montfort.) 

 171a B — morrowensis. Miller & Dyer. 



Genus CYRTOLITES. (Conrad.) 

 I78fl C — magnum. Miller. 

 \1%b C— nitidens. Ulrich. 



Genus RAPHISTOMA. (Hall.) 

 \%Oa R — planispira. Dennis. 

 180^ R — staminium. Hall. 



Genus CYCLORA. (Hall.) 

 i8ia C — depressa. Ulrich. 



BRACHIOPODA 



Genus STROPHOMENA. (Rafinescjue. ) 

 198(7 S (?) — ulrichi. James. 



Genus LEPT.liNA. (Dalman.) 

 211 L — aspera. James. 



Syn. L. pHcateHa, Ulrich. 

 (This seems to be the young of L. aspera, or pos- 

 sibly of L. Sericea, Sowerby.) 



Genus ORTHIS (Dalman.) 

 214(7 O -acuminata. James. 

 225 O— emacerata. Hall. 



Syn. 230 O. meeki. Miller. 

 229 O — ^jugosa. James. 



A description of this species was read at a 

 meeting of the Western Academy of Natural Sciences; 

 June, ISSl, but the Society not printing its pro- 

 ceedingsthe description was not published. I now 

 give some of the conspicuous features of the shell: 



Transversely sub-oval in outline ; length and 

 breadth about as 6 to 7; cardinal line less than the 

 widest part below, sometimes not over % ; regu- 

 larly rounded from the cardinal line to the luleral 

 margins and to tlie front. More or less sinuous in 

 front, caused by a rather broad mesial sinus in the 

 dorsal valve, which is plano-convex, and a mesial 

 ridge on the ventral valve, qiute sharp in some 

 cases, in others but little conspicuous above the 

 regular prominent convexity. Beak of the ven- 

 tral valve projecting and incurved, that of the dor- 

 sal valve very slightlj- projecting and almost im- 

 perceptibly incurved. Area triangular. Foramen 

 in the ventral valve triangular. Surface of both 

 valves covered with rather fine radiating strise 

 which divide two or three times before reaciiing 

 the margins, and are crossed by much finer trans- 

 verse concentric lines, eonspicuoias under a mag- 

 nifier on unworn examples. The outer strise at 

 the beak form a short curve and terminate on the 

 cardinal line. 



Different examples vary in size from % of an 

 inch to one inch in diameter, and a thickness 

 through the middle of the valves from % to % of 

 an inch. 



Prof. Hall, (Pal. N.:y. Vol. I.) referred this shell 

 to O. te.<tudinaria. Dalman. 



Mr. Meek says, (Pal. O. Vol. I ) "A careful com- 

 paris^on with Mr Davidson's figures of English 

 specimens referred to O. testuclinaria leads me to 

 doubt whether they can be properly included in 

 the same species with the latter." 



This is an abundant fossil in the upper beds of 

 the Cincinnati group. 



236 O — neglecta. James. 



(not O. pei-veta. Con.) 

 224 O — anniana. James. 

 249 O — inflata. James. 



(These two, 244 and 249 are, probably, varieties 

 of 0. acutilirata. Con. 243.) 



Genus RHYNCHONELLA. (Fischer.) 

 252 R — capax. Conrad. 



Syn. K. perlamellosa. Whitfield. 



Genus ZYGOSPIRA. (Hall.) 

 261a Z — concentrica. Ulrich. 

 263(? Z— var. kentuckensis. James. 



Gemts TREMATIS. (Sharpe.) 

 266(7 T — quincuncialis. Miller & Dyer. 



Genus CRANIA. (Retzius.) 

 268(7 C — alternata. James. 

 268^ C — asperula. James. 

 268c C — costata. James. 

 272(7 C — parallela. Ulrich. 

 272^ C — percarinata. Ulrich. 

 272c C — reticularis. Miller. 

 373a C — socialis. Ulrich. 



