1882.] 141 [Hagen. 



ner's figures, but not in the others. If P. Chloridice should not 

 show more variation than given in the figures and descriptions — 

 which can only be decided when both species have been bred in 

 sufficient number — the question would be, whether both are different 

 species or only local races of one species. Considering the wide 

 variation of other species of Pieris, I believe it more safe to accept 

 the latter conclusion until the former has been proved beyond 

 any doubt. Mr. H. Christoph in Sarej3ta, Russia is the only 

 entomologist who had bred largely C. Chloridice. 



Pieris Occident alis. 



Collected 17 specimens at the Dalles, Or., June 23, along the 

 Yakima River at Lone Tree, June 30 ; Yakima City, July 2, 4, 

 mouth of Natchez River, July 5; below Ellensburg, July 14, and 

 at Loon Lake, July 23, all in Washington Terr., and never in the 

 same locality with P. Beckeri. I have before me P. occidentalis 

 from Colorado, collected by Allen ; between Great Salt Lake and 

 Ft. Bridger, Wy., collected by Garman ; from Arizona, collected 

 by Palmer. I cannot find in the specimens nor in the descrip- 

 tions characters proving the accepted separation of P. Protodice 

 and its varieties. I have seen P. Calyce, which is regarded as 

 the spring form of P. occidentalis. 



General Meeting. December 6, 1882. 



The President, Mr. S. H. Scudder, in the chair. Twenty- 

 three persons present. 



On behalf of the author, Dr. M. E. Wadsworth presented the 

 following paper : 



THE DUNYTE-BEDS OF NORTH CAROLINA. 



BY ALEXIS A. JULIEN. 



Olivine enters largely, or as a predominant constituent, into the 

 composition of several rocks of frequent occurrence in Europe, 

 viz. — 



