Bi'itish Fossil Crinoids. ;i91 



no longer regards T. egertoni as tin* genotype. So far as I 

 can judge from Phillips's original figure, that species would 

 nol form part of the genus as conceived by Dr. Springer, 

 though what would happen to it I cannot say. The original 

 of the figure was, with other specimens alluded to by Phillips, 

 in the collection o£ Sir 1'liillip Egerton, the whole of which 

 was purchased for the British Museum in 1882. But neither 

 these specimens nor the specimens mentioned by Phillips as 

 in the Enniskillen Collection, also purchased in the same 

 year, have ever been found within the walls of this museum. 

 However this question may ultimately be solved, it will 

 make no difference to the validity of the genus now to be 

 proposed. 



Cydonocrinus*, gen. nov. 



Diagnosis. — A Taxocrinid with IBB projecting beyond 

 the small stem-facet and entering the side-walls of the sub- 

 globular patina ; with no PA; with post. B projecting so 

 that the rectal channel is entirely outside the radial faeets ; 

 iBr probably minute, and, though the arms did not abut, the 

 perisome uniting them was scarcely visible from the exterior. 



The absence of a radianal places this in the section with 

 Eutaxocrinus, Taxocrinus, and Parichthyocrinus, From all 

 of these it differs in the relatively small stem-facet and in 

 the large size and eonspieuousness of the infrabasals. The 

 globular shape of the cup, constricted round the peristome, 

 is very different from the wide cups of Eutaxocrinns, Taxo- 

 crinvs, and the broadly expanded Parichthyocrinus. 



Genotype. — C. parvulus, sp. n. 



Holotype in the Geological Department of the British 

 Museum; registered E 10178. Collected by D. M. S. 

 Watson, Esq., in 1907. 



Hoi izon. — " Great Limestone/' uppermost bed of the Yore- 

 dale Series, Upper Dibunophyllurn zone of the Upper 

 Visean. 



Locality. — Above Manchester Pi t, Xidderdale, Yorkshire. 

 Associated with numerous thecas of Orbitremites derbiensis, 

 in which the spiracles other than the anal are more hooded 

 over than is usual in the species, Brit. Mus., E. 16398- 



E L6419. 



Description of holotype. — Measurements of the patina: 



height o mm. : sagittal greatest diameter G'4 mm. at top of 



* \x.i)\ov Kvb&viov, the quince; the name Cydonocrinus La formed on the 

 analogy of KeSww^eXi, quince-honey, mentioned 1>\ Dioecorides. 



