REPORT ON PAL^EONTOLOGIOAL COLLI* TloNs. 



DESCRIPTIONS OF NEW SPECIES. 



DEVONIAN FOSSILS. 

 MOLLOSCA. 



BRACHIOPOPA. 

 Genus PRODUCTUS, Sowerby. 



Peoductus subaculeatus, Mnrckison (?). 



frodlicti's .-ilh.inil 



Shell small, su 



regions, more flattened bmarcl me eamina. noruer ami u 

 . hinge; surface marked by small concentric wrinkles, and 



Length, (i.-)2 inch: breadth about <>.f>7. 



I am by no means clearly satisfied that this little shell 

 P. subaculeatus of Murchison, the specimens in the collecti 

 very satisfactory condition for comparison. I do not tin 

 distinguished from specimens that have been referred by 

 World to P. subaculeatus. It nevertheless seems also to be 

 Hamilton group specimens that have been figured under o 



Locality and position— -West side of Buell Valley, latiti 

 115° 36' west. 



Genus SPIRIFER, Sowerby. 



Spieifer Utahensis, Meek. 

 Plate 1, fig. 4, a, b, c. 



Sphitlra S'oru-ooili, M.-.-fc (July. IHin), Pioeo-d. Acad. Nat. Sri. Philad.. XII. :!•»- !i 

 Spirif, ra Ctahoms, Meek (November 20, 1860), last page of extra copies of the abc 



Shell rather small. trigonoid-semicireular. wider than 



dtl. 



on or near the hinge-line. Ventral valve very convex at the umbo. Moping abruptly 

 to the front and sides; beak elevated, rather pointed, and more or less arched over the 

 area, sometimes a little twisted to one side; mesial .inns rather shallow, rounded, and 

 extending to the point of the beak, from which it widens and deepens very gradually 



44BTJ 



