86 NEW YORK STATE MUSEUM 



the size of that of G. decadactylus and while distinctl}^ 

 showing the numerous interbrachials of Glyptocrinus, it is not well 

 enough preserved for close determination. 



Heterocrinus ? gracilis Hall 



PI. 3, fig- 5 

 Hall (title 3, page 280, plate 74, figure 3) describes and figures as 

 Heterocrinus? gracilis an extremely small, slender crin- 

 oid, of which he states that " it occurs in the soft olive shale at 

 Snake hill, Saratoga county, N. Y." Since Hall was unable to make 

 out the arrangement of the calyx-plates, the species can not be con- 

 sidered as properly defined. It is, however, obvious to the collector 

 that the shale, and especially a thin, dark gray sandstone bed at 

 Snake hill, contains this and other coarser crinoids in considerable 

 number. Unfortunately we have been unable thus far to obtain 

 satisfactory material. We figure here a specimen of H . ? 

 gracilis which permits a view of a part of the calyx, but defer 

 the generic determination of this minute crinoid until better material 

 has been obtained. 



Cremacrinus sp. 



Doctor Ulrich has kindly directed my attention to the presence of 

 a specimen of Cremacrinus in the shaly Snake Hill sandstone. 

 The specimen probably represents a new species since the calyx and 

 whole body are more slender than the other congeneric forms; but 

 we do not feel warranted, with the incomplete material before us, 

 to do more at present than note the presence of this genus in the 

 Snake Hill beds. 



Carabocrinus cf. radiatus Billings 



PL 3, fig. 6 



The citation of this species among the Snake Hill fossils is based 

 upon a single calyx plate which well exhibits the characteristic 

 angular radiating sculpture lines of that species and corresponds to 

 the basals (subradials) in outline. C. radiatus is known from 

 the Trenton limestone of Ottawa. 



Edrioaster saratogensis nov. 



PI. 3, figs. 2-4 1 



Body of small size, about 14 mm in diameter, discoid, gently 

 convex on the oral side; aboral surface not seen; apparently not 

 attached. 



