91 



tlibraucliiata , Inferobranchiata ct 

 Tectibranchiata complectens. — 

 Blanchard 1848 Compt. rend. 

 XXVIII. -244, et Ann. sc. nat. 

 IX. 172, et 1849 ib. XI. 74. 



Opisthobrancliii „6Ianch." 

 Frok. 1848 N. Not. nr. 127. p. 

 263, V. praec. 



OpisthoportiS Bens. in lit., teste 

 Pfr. 1851 Ztschr. f. Mal. 8, sectio 

 Cyclostomae: C. Taylorianum ct 

 rostellatum Pfr. =. Cyclotus sp. Pfr. 



Orbiceila DOrb. |847 Compt. 

 rend XXV. 269, et 1860 Ann. 

 sc . nat. , c, XIII. .360, g. Orbicu- 

 lidarum. = ?Treraatis Sharpe. 

 (Davidson, sed negante Morris.) 



— Orbicula Cuv. 1. c. 436. — 



Sow. 1846 in Sow. jr. Thes. part. 

 Vn. , Monogr. — D'Orb. 1860 

 Ann. sc. nat. XIII. 349, g. Orbi- 

 culidarum. 

 Orbicularius Dum. 1806 Zoo! 

 anal. 168, g. Brachiop. = Orbi- 

 cuhi Cuv. 



— Orbiculitlae MCoy em. — 



D'Orb. 1847 Compt. rend. XXV. 

 269, et 1860 Ann. sc. nat. XIII. 

 348, fam. Brachiop. : Siphonotreta, 

 Orbicella, Orbiculoidea, Orbieula. 

 OrbiculoideaD'0RB. l847Compt. 

 rend. XXV. 269, et 1860 Ann. 

 sc. nat. XIII. 351, g. Orbiculida- 

 rum, quod ab Orbicula non dif- 

 fere censet Davidson. Syn. Patella 

 sp. Markl. Schizotreta Kut. 



— Orbis Lea. — Gray 1847 Zool. 



Proc. 161, g. Littorinidarum ? 

 Orbitulites Griff. 1834 A. K. XII. 



15. = Orbulites. 

 Orplinus At.bers 1850 Hel. 146, 



sect. Bulimi: B. Taunayi Fer. 



— Ortliaiicus Beck. — confirmat 



gcnus Troschel 1847 Ztschr. f. 



Mal. 60, et 1850 Arch. f. Natg. 

 XV. 1. p. 228. 



— Orthis Dalm. 1. c. 96. 110, g. 



Terebratulitarnm; Anoraites pecten 



Wahlenb. — D'Orb. 1847 C. rend. 



XXV. 267, et 1850 Ann. sc. n. 



XIII. 320, g. Orthisidarum. — 



Gray 1848 Ann. Mag. N. H. II. 



438, g. Productidarum. 

 Ortliisidae D'Orb. 1847 Corapt. 



rend. XXV. 267, et 1860 Ann. 



sc. n. XIII. 317, fam. Brachiop. : 



Strophoraena, Orthisina, Orthis. 

 Ortliisina D'0rb. 1847 Compt. 



rend. XXV. 267, et 1850 Ann. 



sc. n. XIII. 319, g. Orthisidarum: 



Orthis anomala, ascendens. 

 Orthocera Leach 1823 Syn. Br. 



M. 64. = Orthocerea. 

 Ortiiocerata Blaimv. 1825 Dict. 



sc. n. XXXVI. 487. = Orthoce- 



rea Lmck. 

 Ortliocereae Bbonn 1824 Syst. 



urw. Concli. 9. = Orthocerea 



Lmck. 



— Orthocerotes Lixx. 1735Syst. 



ed. I. , specics Hehnintholithi. 

 Ortliocerusi Kixg 1844 Ann. Mag. 

 N. H. XIV., g. Tetrabranchiorum. 

 = Orthoceratites Br. 



— [Ortboconcbae Gein. 1846.] 



Orthoconques D'Oi!b. 1844 

 Pal. fr. T. cret. IIL 14, Lamelli- 

 branch. ordo; subordines: 1. si- 

 nupalleales: Clavagellidae, Pliohi- 

 dae, Solenidae, Anatinidae, Telli- 

 nidae , Corbulidae , Pctricolidae, 

 Cytheridae 2 integropalleales : 

 Cardidae, Tridacnidae, Astartidae, 

 Cypriuidae, Cyclasidac, Lucinidae, 

 Unionidae, Trigonidae, Nuculidae, 

 Arcacidae, Mytilulae. — 1 846 Voy. 

 Amer. Moll. 495, farailiac : I . Cla- 

 vageliidae, Pholadidae , Myacidae, 

 7 



