TPIE ANNALS 



AND 



MAGAZINE OF NATURAL HISTOHY. 



[SIXTH SERIES.] 

 No. 41. MAY 1891. 



XLI. — Briiish Fossil Grinoids. — V. Botiyocrinus, Wenlock 

 Limestone. Bj F. A. Bather, M.A., F.G.S. 



[Plate XIII.] 



History of Opinion. 



The genus Botryocrinus was founded in 1878 by IST. P. 

 Angelin to include certain fossils from Follingbo in Gotland. 

 The name, derived from jSorpv';, a bunch of grapes, appears 

 to have been suggested by the peculiar branching of the arras 

 in the specimens known to Angelin (see ' Annals,' ser. 6, 

 vol. V. pi. XV. fig. 9, illustrating Brit. Foss. Grin., II.). 



On p. 24 of Angelin's * Iconographia Crinoideorum ' is the 

 following diagnosis : — " Corpus elongatum, dendroideura, 

 corymbosum. Calyx parvus, cyathoideus. Basalia quinque 

 aha, pentaedra. Parabasalia quinque hexaedra. Kadialia 

 tria in unaquaque serie ; primaria maxima, heptaedra, lata. 

 Anale singulum clypeiforme. Interradiale singulum, rhom- 

 beum, anale, radiale primarium et parabasalia duo tangcns. 

 Brachia bidigitifera ; digiti ramusculos alternantes, multifidos 

 emittunt. Tubus ventralis crassus, curvus, apice obtuso. 

 Columna articulis tenuissimis, creberrimis." 



This may be translated as follows into English and into 

 modern terminology : — 



Ann. (& Mag. N. Hist. Ser. 6. Vol. vii. 27 



