80 SUBCARBONIFEKOUS PERIOD. 



it is rare. Wlien the description of the species was first published, the 

 specific name was inadvertently omitted, but was added in manuscript to 

 the copies of the memoir that wei'e separately distributed. When publish- 

 ing the preliminary report upon these collections, it was my intention to 

 compliment my friend by giving Ms name to the species ; but, finding that 

 the manusciipt name had been used in the publications of Professor Win- 

 chell, I 'erased the personal name and restored the original one, but the 

 the typographical correction was inadvertently omitted. 



Position and locality. — Strata of the Subcarboniferous period ; Ewell's 

 Spring, Arizona (upper horizon), where it is associated with the two follow- 

 ing species. 



Genus STRINGOPORA Goldfuss, 1826. 



Syringopora Harveyi Wliite(?) 

 Among the fossils collected from the Subcai'boniferous strata at Ewell's 

 Spring, Arizona (upper horizon), there are a few examples of Syringopora. 

 Their specific characters, indefinite enough in the most perfect specimens 

 of the genus, are obscm'ed by being imbedded in hard siliceous limestone. 

 They closely resemble S. Harveyi White from the Kinderhook formation 

 of the Subcarboniferous period at Burlington, Iowa, and, as no other species 

 of the genus is known to me in that horizon, they are referred to the species 

 named. 



Class ECHINODERMATA. 



Order BLASTOIDEA. 

 Family PENTREMITIDiE. 



Genus GRANATOCRINUS Troost, 1850. 



Granatocrinus lotoblastus White. 



Plate V, fig. :i a .and b. 



Granatocrinus lotohlastus White, 1874, Exp. & Surv. west 100th Merid., Prelim. Rep. 

 Invert. Foss., 15. 



Body subelliptical in outline by side-view ; greatest breadth about the 

 middle ; distinctly but not very deeply pentalobate at the base, truncate 

 at top ; base depressed ; basal plates very small ; radial plates apparently 

 very short, and embracing only the loAver extremities of the pseud-ambu- 



