393 Scientific Proceedings, 6fc. 



faintly tinged with violet, slightly carinated at the base and sides, and with 

 punctured striae. Length, including the mandibles, nine and a half 

 lines. Inhabits North Carolina. Resembles C. marginatus and more 

 nearly still C crhtatus from Oregon. 



Cychrus Leonardii. Black; head transversely striated ; thorax viola- 

 ceous, subquadrate, narrowed behind ; elytra broad ovate, carinated at the 

 sides, bronzed violet, deeply crenato-striated. Length, including mandi- 

 bles, from 11 to 13 lines. Inhabits northern and western parts of Massa- 

 chusetts and New Hampshire. Hitherto confounded with C. viduus, from 

 which it essentially differs in color and its more dilated form. 



Cychrus tukkrctjlatus. Black opaque ; head rugose and with two 

 longitudinal impressions on the front; thorax rugose, truncato-cordate, 

 contracted behind; coleoptra ovate, very convex, granulated, with a triple 

 series of smooth tubercles on each elytron; epipleura rugosely punctured. 

 Length 7 to 8^ lines. Inhabits Oregon. 



Cychrus angulatus. Black ; head carinated ; thorax angulated at 

 the sides, much contracted behind; elytra violaceous-brown, somewhat 

 flattened, crenulato-striate ; legs brovvnish-piceous. Length 6^ lines. 

 Inhabits Oregon. 



Cychrus cristatus. Black ; head carinated ; thorax cordate, con- 

 tracted behind ; elytra crenato-striate, with a narrow, blue margin. 

 Length 5' lines. Inhabits Oregon. 



Dr. Harris exhibited specimens of Nyrnpliea orlorata (var. sanguinea) 

 from the Botanic Garden, Cambridge; and remarked upon the tendency, 

 strongly exhibited in these specimens, which all the parts of the flower 

 have, to become leaves. 



Dr. Gould remarked that this lily was originally brought from Mossy 

 Pond, in Lancaster, where it grows in one small spot. He was inclined to 

 regard it as a distinct species, having constantly found the angles of the 

 leaves more prolonged, the color darker and the size smaller than in N. 

 odorata. 



Mr. C. B. ArtAMS, had spent a day at Fresh Pond, and gave an account 

 of the shells he had found there. They were the following species, viz. : 

 Unio nai>ut.us, complanatus, and radiatus ; Anodonta implicata. Say ; 

 Cydas similis ; JPlanorbis trivolvis, hicai^inntus, dtjlectus ? and hirsutus^ 

 MS.; Volvota trirarinata ; Succint-a ovalia ; Lymnea hrterostropha, col- 

 umellnris, catascopivm, Physa lutcrostropha, Paludina decisa, lus rira? 



Of Unio nasutus only one specimen was found, U. radiafus was abun- 

 dant, clean and beautiful. From one of them dropped a beautiful pearl 

 in the form of a flattened sphere, .16 inch in the longer and .11 inch in 

 the shorter diameter. Oi' Anodonta implicata. Say, he said, that a com- 

 parison of adult shells only, with specimens of^. cataracta froin other lo- 

 calities might lead to the conclusion that they were distinct species; but 

 an examination of them in every stage of growth from the size of the 



