129 



Dr. Gould presented, on behalf of Dr. Mighels, a paper, 

 entitled " Descriptions of seven species of shells regarded 

 as new," by J. W. Mighels, M. D., Portland. Me. 



Astarte Portlandica. A. testa parva, solida, per-inequilate- 

 rali ; umbonibus elevatis, approximates, recurvis ; lunula angustata ; 

 intus livida ; marginibus simplicibus. Long. 2-5 ; alt. 9-20 ; lat. 

 1-5 poll. Casco Bay. 



Bulla pertenuis. B. testa minuta, cylindracea, albida, hyali- 

 na ; anfractibus quatuor ; spira elevata ; labro superne recto, infra 

 rotundato; apertura superne angustata, infra lata. Long. 8-100 ; 

 lat. 4-100 poll. Casco Bay. 



Limnea ampla. L. testa ampla. subovata; anfractibus quipque, 

 convexis, superne geniculatis ; sutura valde impressa ; spira brevi ; 

 apertura lata ; umbilico profundo ; columella valde plicata. Long. 

 1.3; alt. 8; lat. 1 poll. Habitat, Second Eagle Lake, Maine, 

 N. lat. 47°. 



Phasianella sulcosa. P. testa minuta, ovato-conica, lrevi ; an- 

 fractibus quatuor subconvexis, transversim sulcatis ; sutura impres- 

 sa ; apertura ovato-oblonga, intus transversim fasciata. Long. 

 1-10; lat. 1-20 poll. Casco Bay. 



Margarita minutissima. M. testa minutissima, globoso-subo- 

 vata ; anfractibus tribus, convexis, longitudinaliter sulcatis; spira 

 brevi, obtusa ; sutura valde impressa ; apertura orbiculari : umbil- 

 ico magno, profundo. Long. 1-50; lat. circa 1-50 poll. Casco 

 Bay. 



Delphinula ? coarctata. D. testa parva, subdiscoidea, imper- 

 forate ; anfractibus tribus, convexis, longitudinaliter minutissime 

 striatis ; ultimo anfractu maximo ; sutura canalicular ; apertura 

 integerrima, circulari, intus flavidula. Long 1-5; lat. 1/5 poll. 

 Casco Bay. 



ADDITIONS TO THE CABINET. 



Dr. Gould presented a section of the trunk of a Californian tree, 

 and a gigantic Aculeusof some tree from Cuba, committed to Prof. 

 Gray. 



Dr. Binney, on behalf of Mr. Anthony, of Cincinnati, presented 

 specimens of Melania varicosa. 



B. X. Cumings, Esq., presented some specimens of coal plants. 



PROCEEDINGS B. S. N. H. 17 OCT. 1S43. 



