26 



©IcfiisBHa, llafinesque. {Incertw sedis.) 18S1. 



Ann. Sci. Phys. Bruxelles, 1820, p. 22fZ; name cited without any de- 

 scription in Mon. Turbinolies de Kentucky. Id. Mon. Biv. Shells Ohio, 

 1831, p. 7. No ex. cited. Genus incert. 



I>icoeIo§ia<, King. Stropkomenidw. 1 850. 



Mon. Perm. Fo3s. p. 106. (&II.) Type Anmniaiiloia, Lin. Dav. 1853, 

 t. viii, f. 143-5, sect. Orthis. (—Bilobites, Linn6.) 



Uicoiaclaa imseqiitaSis, Klein. Invertebrata. 1 753. 



Ostracol. p. 171. Non-binomial. Section containing genera, Terebra- 

 tula, Concha triloba, Concha adunca, Bursula^ Globus, Stola, Concha ansata. 



I>ici'aMBSCW§, Meek. Eliynchonellidce. 187S. 



Am. Journ. Sci. and Arts., 3d ser. iv, p. 28. Type D. ortoni, Meek, 1. c. 

 Pal. Ohio, 1873, i, p. 176, pi. xv, f. 1 a-h. ( = Triplesia, Hall.) 



©ictyoiiella, Hall, MS. ? Ehynclionellidce. 



20th Regent's Report, p. 274, Mar. 1867. (Sil.) Tji>e Airypa coi-al- 

 lifera, Hall, Pal. N. York, 1852, p. 281. ( = Eichwaldia, Bill.) 



©ielasiiiaa, King, TerebratuUdce. 1809. 



Proc. Dublin Un. Bot. Zool. Assoc, i, p. 260. Type Terebratnla elongata, 

 Schlotheim. Dav. Perm. Brach.p. 7,f. 5, 17, 18, 20. {^Epithyris, King, 

 not Phillips. Cf. Seminula, M'Coy, 1855, not 1844.) 



©ignonnia. Hall. Lingulidce. 18T1. 



23d Regent's Rep., p. 245, pi. 13, f. 3, 1873. Extras Mar. 1871, fide Hall. 

 Type D. alvcata, Hall, 1. c. 



I>iniei*elia, Zittel. Ehynclionellidce. 1870. 



Dunker & von Meyer, Paleont. p. 220. Type D. Gumbelli, Zittel, 1. c. p. 

 222, pi. sli, f. 27-30. Syn. Atretia, Jeffr. Cryptopora, Jeffr. 



l>iiliol>oIu@., Hall. TrimerelUdcB. 1871.' 



23d Regent's Rep. p. 247, 1873. Extras, Mar. 1871, fide Hall. Typo 

 Oholus CowrafZt, Hall, 20th Reg. Rep. p. 368. (Compare ^cn^is, Volborth, 

 1869.) Adt. Dav. & King, Qnart. Journ. Geol. Soc. London, May, 1874, 

 p. 159, pi. xviii, f. 1-4. (Cf. Obolellina, Bill.) 



l>il>layite§, Schroter. {Incer tee sedis.) 1779. 



Lith. Lex. ii, p. 423. Non-binomial. {^ ^ Pygope, lAnk.) 



las, Quenstedt. Arthropomata. 1871. 



Petref. Deutschl. ii, p. 27. Subsect. Productidce cont. Orthis, Orthisina, 

 Leptwna, Strophomena, StreptorhyncJms, Hystcrolithus, Dicoelosia, Lepto- 

 coelia. {DiplotJiyra, Tryon, =gen. Pholadacea.) 



©iscisaa, Lamarck. Discinidw. 1819. 



Hist. An. s. Vert, vi, p. 236. Type D. ostreoides, Lam. (not described), = 

 Orbicula norvegica, Sow. non. Lam.= Crania striata, Schum. -f- C. radiata, 

 Gould, Moll. U. S. Expl. Exped. p. 465, f. 480, a~c, 1852. (Recent.) 



Pisciaaa, Ball. Discinidce. 1871. 



Bull. Mas. Comp. Zool. iii, p. 39, 1871. Subg, Discina, type D. striata, 

 Schum. sp. {^^ Discina, Lam. sens. Btr.) 



