1906] The Species of Botrvocrinus. 95, 



mm), 100 ; width at base, 50 ; width at summit, 118. IBB much 

 wider than high. BB and RR about as high as wide. Arm- 

 facet .62 of R. x supports 3 tube-plates. Proximal columnal 

 pentagonal. 



Lower Wenlockian, Lindstrom's bed c, Gotland 

 Of the two cotypes one is lost ; the other, which should be 

 regarded as lectotype, is in Riksmuseum, Stockholm, lettered a 

 (Crin. Gotland, p. 121). 



BRITISH SPECIES. 



Botryocrinus ramosus. 



Botryocrinus ramosus, Bather, 1891, Ann. Mag. Nat. Hist. (6) VII, p 394. 



Dorsal cup incompletely known, apparently a wide cone, with 

 plates slightly rounded and RR not conspicuously projecting. 

 Height (? 10. mm), 100 ; width at base, ? 60 ; width at summit, 

 115. IBB uncertain. BB slightly higher than wide. RR wider 

 than high. Arm-facet .9 of R. x supports one tube-plate. Proxi- 

 mal columnal unknown. 



Upper Wenlockian, Upper Wenlock Limestone, Dudley. 



Holotype in British Museum, No. 57217. 



Botryocrinus decadactylus. 



Cyathocrinus (sp. 2) decadactylus, Salter, 1873, 'Cat. Cambr. Sil. Foss. 



Cambridge,' p. 123. 

 Cyathocrinus (sp. 3) quindecimalis, Salter, 1873, op. cit., p. 124. 

 Botryocrinus decadactylus, Bather, 1891, Ann. Mag. Nat. Hist. (6) VII, 



P- 395- 



Dorsal cup elegant, rapidly widening above in a concavo-con- 

 vex curve. The plates show slight traces of axial folding, and 

 RR project slightly. Height of cup (6.5 mm.), 100 ; width at 

 base, 51 ; width at summit, 128. All plates wider than high. 

 Arm-facet from .48 to .85 of R. x supports 3 tube-plates. Proxi- 

 mal columnal obscurely pentagonal. 



Upper Wenlockian, Upper Wenlock Limestone, Dudley. 



The specimens to which Salter attached his MS. names are in 

 the Sedgwick Museum, Cambridge, England, numbered a 494 

 and a/495 respectively ; but since they do not show the charac- 

 ters even of the genus, it seems better to select from among 



