to 



December IT, 1875. 



The President in the chair. Sixteen persons present. 



The death of R. yon- Willejioes-Suhm, of H. M. S. Challenger, 

 a Corresponding Member of the Society, was announced. 



Richtee Lajos, of Buda-pest, and "W. G. Farlow, of Boston, 

 Mass., were elected Corresponding Members of the Society. 



The following paper was read: On Noctuidae from the Pacific 

 coast of North America, by Aug. R. Geote. 



Professor W. H. Pitt exhibited a specimen of a dorsal impression 

 of Eusarcus scorjnonis from the "Water Lime Group. This was the 

 second specimen of the species discovered. The position of the 

 animal was a reverse of that in the origiual type, which gave the 

 ventral view of the species. The narrow caudal segments, compris- 

 ing the "tail" of the animal, showed no indication of terminatij;ig 

 in a spine; they were apparently incomj)lete as in the ty23e. 



Mr- Geote remarked that it was possible that the tail did not in 

 reality terminate with a spine as in Eurypterus. A detached im- 

 pression of a broad rounded appendix was shown, conjecturally 

 referable to Eusarcus. A paper on the new specimens was stated 

 to be in preparation. 



Mr, Geote stated that he had recognized the species Polenta 

 Tepperi (Belfrage, No. 129) among new Texan material in the col- 

 lection of this Society. The generic diagnosis given by Mr. Morri- 

 son (Bost. Proc, 124) merely states that the fore tibiae are un- 

 armed, so that the species cannot be referred to Schinia. No 

 characters are given to define the genus; "in other structural 

 points" Mr. Morrison says there is '" but little difference." Nev- 

 ertheless the genus oflers some noteworthy characters which 

 warrant its erection on other grounds than given by its author. 

 In the peculiar structure of the clypeus it is an evident ally of 

 Fala from California, as well as of the genera Plagiomimicus, 

 Stiria and Stiladhim. The front shows a central circular relieved 

 rim, within which is a slight tubercle ; the Avhole not yery promi- 

 nent, and concealed by the converging facial squamation ; we have 

 this style of frontal structure in the Californian genus, but much 

 exasfgerated, and with a wedge-shaped protuberance. In Polenta 



