ON I'OSSIL rOLY/OA. 



171 



Tlii.s is tlic whole of the lists of Ci'etaccons Polyzoa that [ have hcoii 

 able to obtain. Thoro avo several species described by D'Orbigny find by 

 other authors, but their works were not accessible to me. It is to hv 

 lioped that in the monograph of Cretaceous Polyzoa promised to the 

 Pahrontogruphical Society by Mv. Busk, that the whole of the Polyzoa of 

 various horizons will be fully examined. In my fourth British Association 

 Report T gave a fair digest of what is known of British species. 



'Part [II. — Tertiary Polyzoa, North America,' Lonsdale. 



In the first volume of the ' Quart. Jour, of the Geological 8oc.,' Mr. 

 William Lonsdale described twenty-si.K species of ' Polyparia ' from the 

 ' JJocene Tertiary ' of North America. Nino species are Anthozoa, seven- 

 teen Polyzoa (six Cyclostomata, eleven Cheilostomata). In the same 

 •lournalhe described ten species from the ' Miocene Tertiary' formation f>f 

 N.A., three of which are Anthozoa, seven Polyzoa (only one of these 

 a Cyclostoma). As the monograph of [Messrs. Gabb & Horn is a later 

 publication, many of the species of Lonsdale arc rearranged or reduced to 

 synonyms. 



1. 'Eocene Polyzoa,' Lonsdale * Quart. Jour. Geol. Soc.,' vol. i. 



2. ' Miocene Polyzoa,' Lonsdale ' Quart. Jour. Geol. Soc.,' vol. i. 



1. Esc'iiAEiXA TUMiDii,A, Lons. — Lnc. Petersburg. 



2, LuxULiTKs DEXTiciLATA, Conrad, 'Silliman Journ.,' Oct. 1841 



(vol. iv.) — Loc. Williamsburg, 

 o. CEiJ,i;roi!A INIORMATA, Lons. — Jjiir. Petersburg, Virginia. 

 4. ., I MiiiLicATA, Lons. — Loc. Petersburg. 



,, QrAi)UAN(iur,ARis, Lons. — Locs. Williamsburg, Evergreen. 



6. 



7. 



Hi:Ti:itoroRA ? 



siMlLis, Lons. — Loc. Williamsburg. 



TOiJTiLis, Lons. 



-Loc. Williamsbui'ir, Petersburg. 



Cyclostomata. 



1. Tumr.U'ORA riior.osciDEA ? — Loc. Hock's Bridge. 



2. „ — one imperfect specimen. — Eutaw. 



3. Idmonka MAXiLi,Anis, Lons. — Luc Wantoot, S. Carolina. Viewed in 



front, this coral resembled a Miistricht fossil, considered by 

 Goldf. as a young condition of Idmonea gradata (' Pet. Cor.' p. 

 244. ' Retepora disticha,' p. 20), but it diflers essentially from 

 mature specimens of that species. 



4. I. COMMISCENS, Lons. — Loc. Rock's Bridge. In the triangular form 



of the branches, this fossil i-esembled the Tertiary species of Do 

 France or Mil.-Edw. under the names of Idmonea gradata and I. 

 coronopus (' De F., Atlas dcs Sc. Nat.' pi. 4(>, f. 5. M.-Edw. 

 ' Recb. Polyp. Mom. snr Ics Cris.' pp. 24, 2:"^.) 



5. Iemonea sp. — Loc. Rock's Bridge. 



6. LiCHENOi'ORA sp. — Loc. Eutaw. 



Cheilostomata 



1. Faucimia sp. — Lor. Rock's Bridge, Eutaw, in S. Carolina. 



2. ViNCULARiA sp. — Loc. Rock's Bridge. 



3. Hiri'OTHOA TuiiERCiLi M, Lons. — Ijoc. Rock's Bridge. 



4. EsCHARA Ti;i!ri,ATA, Lons. — hoc. Wilmington. 

 h. „ PETiOLLS, Lons.' — Loc. Eutaw. 



