ICHTHYOCRINIDAE 319 



lington — Choteau — Kinderhook — Waverly beds of their respective localities ; White's Creek 

 Springs and Ridge Top, Tennessee ; Button Mould Knob, Kentucky ; and Knobs in Clark 

 and Washington counties, Indiana. 



Euryocrinus rofei Bather and Gregory MS. 

 Plate XL, figs, fa, b 



Euryocrinus concavus Rofe (not Phillips), Geol. Mag., (1) X, 1873, p. 263, pi. 11, figs. 11, 11a, b. 



Larger than E. concavus. Calyx relatively narrower and with straighter 

 sides. Height to width at I'lBn, 14 to 33 mm.; base, 14 mm. Plates smooth, 

 with sinuous sutures showing no sign of imbrication. Base broad and flat. 

 IBB mostly resorbed. BB and anal series about as in E. concavus, but iBr much 

 larger and wider, being about the same as the anals, and extending higher up. 

 On account of this and the width of the base the increase in width of the three 

 primibrachs is much less. Superior parts and column unknown. 



This is the form figured and described by Rofe as E. concavus. He only gave a side view 

 of the specimen, with two explanatory figures to show the curved sutures and the over- 

 lapping of one brachial over the edge of the one below it (patelloid processes of subsequent 

 literature), which strongly attracted his attention. There is another fragment of this species 

 in the British Museum, No. E642, showing only the interior, which has the same tendency to 

 resorption of the infrabasals accompanied by the enlarged growth of the axial canal. The 

 great difference in size and extent of the interbrachials, and the less spreading calyx, distin- 

 guish this species from the type. 



Type. British Museum, No. E7423. 



Horizon and locality. Lower Carboniferous, Mountain limestone ; Clitheroe, England. 



(?) Euryocrinus granulosus (Phillips) 

 Plate XL, fig. 8 



Poteriocrinus granulosus Phillips, Geology Yorkshire, II, 1836, p. 205, pi. 4, fig. 4 (not figs. 2, 8, 9, 10). 



Poteriocrinus granulatus in explanation of plate on p. 246. — Morris, Cat. Brit. Foss., 2d Ed., 1854, 



p. 87. 

 Taxocrinus granulosus, Morris, Cat. Brit. Foss., 1st Ed., 1843, p. 59. — Bronn, Index Palaeontologicus, I, 



1848, p. 1217. 



Phillips figured under the above name two entirely different types, his figures 2, 8, 9 

 and 10 representing Poteriocrinoids with a radianal ; and of these, figure 2, was referred to 

 Poteriocrinus by De Koninck and Le Hon under the name Poteriocrinus phillipsianns. The 

 references of this species by various subsequent authors to Zeacrinus and Hydreionocrinus 

 were based wholly on figures 2 and 8, and are therefore omitted from the synonymy. The 

 remaining specimen, original of Phillips's figure 4, belongs to this family, perhaps to this 

 genus, although my guess would be rather in favor of Amphicrinus ; it is a fragment in which 

 only the base and some of the radials are preserved. Both basals and infrabasals are larger 

 than in the other species, the former extending well beyond the column and the latter not 

 being at all resorbed. The surface is distinctly marked with small tubercles. No other speci- 

 mens of this form have been found. 



Type. British Museum, No. E6982. 



Horizon and locality. Lower Carboniferous, Mountain limestone( ?) ; Bolland, York- 

 shire, England. 



