ADDENDA. 



Prof. James Hall, of New York, has proposed new names for his species, that were 

 found preoccupied in the course of this work. Part of these new names were received 

 in time to fall in their proper places, others are added here. 



Amplexus hamiltonise, Hall, 1876, Illust. 



Devonian Foss., Ham. Gr. [Ety. 



proper name.] 

 intermittens, Hall, 1876, Illust. Devonian 



Foss., Ham. Gr. [Sig. interrupted, 



left at intervals.] 

 Bellerophon textilis, Hall, 1877, Warsaw 



Gr. [Sig. woven.] Proposed instead 



of B. cancellatus, Hall, 1858, which 



was preoccupied, 

 triliratus. Hall, 1877, Chemung Gr. [Sig. 



three-lined.] Proposed instead of B. 



tricarinatus, Hall, 1876, which was pre- 

 occupied.] 

 BucANiA euomphaloides, Owen, 1862, Geo. 



Sur. Ind. [Ety. from its resemblance 



to an Euomphalus.'] Not very satis- 

 factorily defined. 

 profunda, Hall, 1859, is the same as B. 



(Euomphalus) profunda, Conrad, 1841. 

 Ch^tetes fruticosus, Hall, 1876, Illust. De- 

 vonian Foss., Ham. Gr. [Sig. bushy.] 

 furcatus. Hall, 1876, Illust. Devonian 



Foss., Ham. Gr. [Sig. forked.] 

 humilis, Hall, 1876, Illust. Devonian 



Foss., Up. Held. Gr. [Sig. small.] 

 tabulatus, Hall, 1876, Illust. Devonian 



Foss., Low. Held. Gr. [Sig. tabulated.] 

 tenuis, Hall, 1876, Illust. Devonian Foss., 



Up. Held. Gr. [Sig. slender.] 

 CoNULARiA crawfordsvillensis, Owen, 1862, 



Geo. Sur. Ind., Keokuk Gr. [Ety. 



proper name.] 

 Cyathophyllum conatum,Hall, 1876, Illust. 



Devonian Foss., Ham. Gr. [Sig. an 



effort] 

 galerum. Hall, 1876, Illust. Devonian 



Foss., Ham. Gr. [Sig. a cap.] 

 gradatum. Hall, 1876, Illust. Devonian 



Foss., Ham. Gr. [Sig. made with 



steps.] 

 nanum. Hall, 1876; Illust. Devonian 



Foss., Ham. Gr. [Sig. a dwarf.] 

 nepos. Hall, 1876, Illust. Devonian Foss., 



Ham. Gr. [Ety. proper name.] 

 palum, Hall, 1876, Illust. Devonian Foss., 



Ham. Gr. [Sig. a stake.] 



perlamellosum. Hall, 1876, Illust. Devo- 

 nian Foss., Up. Held. Gr. [Sig. hav- 

 ing many lamellse.] 



robustum. Hall, 1876, Illust. Devonian 

 Foss., Ham, Gr. [Sig. robust.] 



subcaespitosum, Meek, 1872, Hayden's 

 Geo. Rep., Low. Carb. [Ety. from 

 a resemblance to C. caespUosum.} 



validum. Hall, 1876, Illust. Devonian 

 Foss., Up. Held. Gr. [Sig. stout.] 

 Cyclonema obsolescens. Hall, 1877, Che- 

 mung Gr. [Sig. grown old.] Pro- 

 posed instead of C. obsokta, Hall, 1876, 

 which was preoccupied. 

 Cyrtoceras hallanum, D'Orbigny, 1850, 

 Prodrome de Pal., Trenton Gr. [Ety. 

 proper name.] Proposed instead of 

 C. lamellosmn, Hall, 1847, which was 

 • preoccupied.] 



olenus, Hall, 1877, Schoharie grit. [Ety. 

 mythological name.] Proposed in- 

 stead of C. orion, Hall, 1876, which 

 was preoccupied.] 



subannulatum, D'Orbigny, 1850, Prodr. 

 de Pal., Black Riv. & Trenton Gr. 

 [Sig. somewhat annulated.] Proposed 

 instead of C. annulatum, Hall, 1847, 

 which was preoccupied. 



subarcuatum, D'Orbigny, 1850, Prodr. 

 de Pal., Trenton Gr. [Sig. somewhat 

 arched.] Proposed instead of C. ar- 

 cuatum, Hall, 1847, which was pre- 

 occupied.- 



subcancellatum. Hall, 1877, Niagara Gr. 

 [Sig. somewhat cancellated.] Pro- 

 posed instead of C. cancellatum, Hall, 

 1852, which was preoccupied. 



tenuistriatum. Hall, 1877, Trenton Gr. 

 [Sig. finely lined.] Proposed instead 

 of C. corniculuitii Hall, 1862, which 

 was preoccupied. 



Cystipiiyllum conifollis. Hall, 1876, Illust. 

 Devonian Foss., Ham. Gr. [Sig. an 

 inflated cone.] 

 corrugatum, Hall, 1876, Illust. Devonian 

 Foss., Ham. Gr. [Sig. corrugated.] 



