204 THE CRINOIDEA 



Tetramerocrinus, T. & T. Austin (1843) ; shown by labels and MS. to be syn. 



of Melocrinus or Mariacrinus. 

 Thalamocrinus, Miller & Gurley (1895), Silurian, Tennessee. Cup alone 



known ; like Bactrocrinus or Homocrinus, without RA. 

 Trianisites, Rafinesque, fide L. Agassiz (1841) ; not known. 

 Triplaricrinus, Goldfuss, MS. label for Hexacrinus pater aeformis, fide L. Schultze 



(1867). 



Trochita, Auctt. vett., a round columnal with radiating striae. 

 VTetavicrinus, Waagen & Jahn (1899), Silurian, Bohemia ; if monocyclic, must 



be a Batocrinoid ; and if each Br bears more than one pinnule, is probably 



a Carpocrinid. 

 Xenocrinm, Jahn (1892) non Miller; altered to Zenkericrinus, Waagen & 



Jahn (1899), Silurian, Bohemia ; based on an imperfect cup, which does 



not differ from Mariacrinus (p. 161). 



A few of the Terms used by some other writers, and not previously alluded 

 to, may be correlated with those of the present work : 



Subradialia, de Koninck and Americans = BB of Dicyclica. 



Subradiale, Jaekel = RA [and presumably all Rz] in Monocyclica Inadunata. 



Subanale, Jaekel = RA in Dicyclica Inadunata. 



Azygos plates, Billings et alii = anals in general, and RA in particular. 



Costalia=IBR in Marsupites (J. S. Miller) ; IBB & BB in Dcndrocrinus (Hall) ; 



BB in clearly dicyclic Inadunata and Flexibilia, and in Dimerocrinus 



(J. S. Miller, Hall) ; BB of all Crinoidea (Loven) ; Ri in Heterocrinus 



(Hall) ; RR in Scyphocrinus, Lyriocrinus, Macrostylocrinus (Hall) ; RR & 



IBri in monocyclic or pseudomonocyclic Camerata and Articulata (J. S. 



Miller, Hall) ; RR & IBr in Cladocrinoidea only (Jaekel) ; IBr in all 



Crinoidea (Bather in earliest papers ; "Wachsmuth & Springer, 1897) ; 



iBrj in Eucalyptocrinus (Hall). 

 Scapula, J. S. Miller, Hall ; Radiale articulare, L. Schultze, Zittel = the 



proximal plate in a ray that has an articular facet for the arms, therefore 



may be R, IBrj, IBr2, or lAx. 

 Radialia, Miiller, Zittel ; Primary Radials, Wachsmuth & Springer (1879-81) 



= all plates in a ray up to first forking, i.e. R & IBr up to lAx. 

 Brachialia of 1st, 2nd, '3rd, etc. order, Miiller, Zittel, Wachsmuth & Springer 



before 1890 ; articles brachiaux, de Koniuck = free Br only. 

 Brachialia, Dibrachialia, Tribrachialia, Jaekel = IBr, IIBr, IIIBr. 

 Brachialia, P. H. Carpenter, before 1890 = Finials. 

 Radialia distichalia or Distichalia, Miiller, Zittel, Waagen & Jahn ; Secondary 



Radials, Wachsmuth & Springer (1879-81) ; Dicostalia, Jaekel=IIBr. 

 Distichalia, P. H. Carpenter (1879), Wachsmuth & Springer (1897) = IIBr., 



fixed or free. 

 Palmaria, Huxley (1877), P. H. Carpenter (1879), Wachsmuth & Springer (1897) 



= IIIBr. 

 Fostpalinaria of 1st, 2nd, 3rd, etc. order, Carpenter, Wachsmuth & Springer 



(1897) = IVBr, VBr, VIBr, etc. 



The corresponding terms for supplementary plates Intercostal, Inter scapular, 

 Interradial, Inter axillary, Interdisticlial, Inter palmar, and Interbrachial have 

 also been used in diverse senses. 



For Literature of Crinoidea see p. 211. 



