204 THE CRINOIDEA 



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



of Melocrinus or Mariacrinw. 

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



known ; like Bactrocrinus or Homocrinus, without RA. 

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

 TriplaricriniM, Goldfuss, MS. label for Hexacrinus pateraeformis,fide L, Schultze 



(1867). 



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

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



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



a Carpocrinid. 

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



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



not differ from Mariacrimis (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 Rt] in Monocyclica Inadunata. 



Subannlc, Jaekel = RA in Dicyclica Inadunata. 



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



Costalm = IBB in Marsupitcs (J. S. Miller) ; IBB & BB in Dendrocrinus (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 Scyphocrinns, Lyriocrimis, Macrostylocrinus (Hall) ; BR & 



IBri in monocyclic or j>seudomonocyclic Camerata and Articulate (J. S. 



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



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



iBr t in Eucalyptocrinus (Hall). 

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



proximal plate in a ray tha.t has an articular facet for the arms, therefore 



may be R, IBr lf IBr 2 , 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 



l^e fore 1890 ; articles brachiaux, de Koninck = free Br only. 

 Brachialia, Dibrachialia, Tribrachialia, Jaekel = IBr, IIBr, IIIB- 

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

 Radialia distichalia or Distichalia, Miiller, Zittel, Waagen & Jahii ; 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) 



Postpalmaria 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, Interdistichal, Intcrpalmar, and Interbrachial have 

 also been used in diverse senses. 



For Literature of Crinoidea see p. 211. 



