53 

 Ortliotlief es, Fischer de Waldheim. Strophomenidce. 1 837. 



Oryct. Gouv. Moscou, p. 133, t. xx, f. 4 a-c. No specific name applied. 

 According to Bronn,the figure represents Orthis arachnoidea,\eTiieai\, 

 Geol. Russ. Ural Mts. ii, p. 196, t. x, f. 18 ; xi, f. 1, which, according to 

 Davidson, is Sjnrifera crenistria, Phillips, Geol. Yorkshire, ii, 1830, p. 216, 

 pi. ix, f. 6, = Streptorhynchus crenistria, Dav. Mon. Garb. Brach. pp. 124, 

 228, and Mon. Dev. Brach. p. 81. Fischer again introduces the name in 

 Bull. 1. c. 1850, p. 23, pi. X, f. 3, with the species this time named 0. 

 radiata, Fischer, = Streptorliynclius umiraculum, Dav. Mon. Dev. Brach. p. 

 76. Syn. Stre2}torkynchus, King. (= Hipparionyx, Yanuxem.) 



OrtliOilIfti'is, Geiuitz. Productidce. 1847. 



Bull. Soc. Imp. Nat. Moscou, xx, p 84. Type StropTialosia excavata, 

 Geinitz. sp. Dav. 1856, pi. xii, f. 27-29. Cf. Geinitz, Zechst. p. 48, 1848, 

 and Verneuil, Bull. Soc. G6ol. France, v, p. 300, 1848. {= Strophalosid, 

 King.) 



Orthot®iiBa, Qaenstedt. TerebratuHdce. 1871. 



Petref. Deutschl. ii, p. 315, pi. 45, f. 138-142. Subg. Terebratula. 

 (Mid. Lias.) Type Ter. Heyseana, Eoemer, Verst. Nordl. Ool. 1836, p. 35, 

 t. 12,f. 7. 



OrtIiotfl*BX, Auctt. Productidce. 



Lapsus; cf. Orthotlmx, Geinitz. 



Ostra€ite§, Llhwyd. Invertebrata. 1399. 



Lith. Brit. Ichn. and other non-binomial authors. Genus incert. In- 

 cluded fossil Pectiuides, Spoudyli, Ostrese, and Brachiopoda. 



OstreopecliJiites, Auctt. Invertebrata. 



Used by early non-binomial authors to include various ribbed brach- 

 iopods, Anomia and Ostrea sp. foss. 



Oxyrlij sacBiMS, Llhwyd. BhynchonelUdw. 1 699. 



Lith. Brit. Ichn. p. 34, non-binomial. Quenstedt, Petref. Deutschl. ii, 

 1871, pp. 29, 34. (= Ehynchonella, Fischer, not Oxyrhynchus, Aristotle.) 



PachflSoina, Rafinesque. Brachiopoda. 1831. 



Mon. Biv. Shells Ohio R. p. 8. No ex. cited. Gen. incert. 



Pacliyloaaia, Herrmannsen. Brachiopoda. ] 848. 



Ind. Gen. Mai. ii, p. 186. Paetel, Fam. u. Gatt. Moll. p. 149, 1875 ; lapsus, 

 = PacMloma, Raf. 



PachyrhyncliMS, King. TerebratuHdce. 1 850. 



Perm. Foss. p. 70. (Recent.) Type Terebratula rosea, Mawe. Sow. 

 Gen. f. 4, Dav. 1856, pi. vii, f. 25-8. (= Bouchardia, Dav.) 



Palaeocrama, Quenstedt. Craniidce. 1871. 



Petref. Deutschl. ii, p. 688, t. 61, f. 98. (Sil.) Sole ex. Orbicula anti- 

 quissima, Eichw. Leth. Ross. 1860, i, p. 909. (Cf. Pseudocrania, M'Coy.) 



Palliobrancliiata, Blainville. Invertebrata. 1834. 



Diet. Sci. Nat. xxxii, p. 298. Class Moll. cont. the Brachiopoda and 

 some genera of J cephala. 



