﻿80 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 47 



Formation and locality. — Upper Traverse limestone : Partridge 

 Point near Alpena, Mich. 



Cat. No. 36,031 (Rominger coll.) U. S. N. M. 



GENNiEOCRINUS Wachsmuth and Springer 



1881. Wachsmuth and Springer, Revision Pateocr., pt. 11, p. 160 

 (Proc. Acad. Nat. Sci. Phila., p. 334). 



GENNjEOCRINUS KENTUCKIENSIS (Shumard) 



1866. Actinocrinus kentuckiensis Shumard, Trans. Acad. Sci. St. Louis, 

 11, P- 345- 



m^i q_ A somewhat imperfect specimen dif- 



r^^cy^c^ f ers from Gcnnccocrinus kentuckiensis 



(OC^f^ ' only in the presence of three costals in 



£)C_) £%•■■.. the anterior ray. The position and 



Q/\Qri relative size of the plates, so far as 



f^ \ y ^i they can be determined from the speci- 



are shown by fig. 9. Although 

 genus GenncBOcrinus is character- 



Ci^cu by great regularity in the arrange- 

 NS=t=^ //~~\ ment of the plates, the presence of a 

 \_//=^ //\\_^/\ sm S^ e ex tra costal does not seem suffi- 

 \ " — \\_) ^"^ cient ground for a separation of the 



V / specimen from it, and this may be re- 



Fig. 9 .—Genna>ocrinus kentuck- garded as an instance of abnormality 



iensis (Shumard). Plates of an • • i-rr r 



K occurring in a genus different from 



abnormal individual. 



those already noted. 

 Formation and locality. — Hamilton : Beargrass quarry, Louisville, 

 Ky. 

 Cat. No. 35,149 U. S. N. M. 



GENN^OCRINUS CARINATTJS Wood 

 1901. Wood, Amer. Jour, of Sci., ser. 4, xn, p. 297, pi. v, figs, a, b, c. 



'Idle collection of the Mass. Institute of Technology contains the 

 type specimen of this species and a young individual which differs 

 from the type in unimportant details of the surface ornament only. 



/■urination and locality. — Hamilton : Charlestown, Ind. 



Cat. No. 1,229 M. I. T. 



GILBERTSOCRINUS Phillips 

 [836. Phillips, Geology of Yorkshire, p. 207. 



