DEVONIAN SPECIES. 27 



nian of the White Pine District, an imperfect specimen of an Alveolites, 

 that grew in an irregular, rather thin, fohated form, with exceedingly 

 oblique calices, of somewhat larger size and narrower form than the fore- 

 going. This, I think, belongs to another species ; but the specimen is 

 scarcely in a condition to admit of its being figured and described. 



Genus FAVOSITES, Lamarck. 

 Favosites (uudfc. sp.). 



Plate I, fig. 6. 



Corallum small, subglobose or ovoid, often growing attached to shells. 

 Corallites rather small, and very unequal in size and form, in consequence 

 of the rapid growth of young ones between Ihe corners of the old, so as to 

 give the latter a polygonal oi* nearly circular outline, Avhile the much 

 smaller young often appear at the surface with a trigonal or quadrangular 

 form, all ' rapidly radiating in all directions. Tabulae passing straight 

 across at intervals nearly equaling the diameter of the larger corallites. 

 (Septa and mural pores unknown.) 



Diameter of corallum, about 1.50 inches ; of the largest corallites, 

 about 0.08 inch. 



The specimens of this little coral have all the cavities solidly filled 

 with silicious matter, so that it is scarcely possible to make out very clearly 

 its more important specific characters. It may be a new species ; but, in a 

 genus like this, the species of which are often so difficult to distinguish, 

 even from the very best preserved specimens, it would be folly to attempt 

 to identify our coral with any of the known species, or to name and 

 describe it as new, without better specimens for comparison. 



Locality and position. — Three miles south of Pinon Pass, Pinon Range, 



Nevada; Lower Devonian or Upper Silurian. Found associated with 



Spirifer Pinonensis, Atrypa reticularis, J^dmondiaf Pifionensis, and fragments 



of a JDalmanites. 



Favosites polymoepha, Goldf. ?, var. 



Plate 2, fig. 3. 

 Calamopora poly^norpha, Goldf. (1826), Petrif. Germ., I, 79, tab. 27.* 



Of this coral, I have seen but the single fragment figured, and this is 

 * For synonj-my, see Edwards aud Hairae's Mouograi)h of Fossil Corals. 



