1874.] 91 [Stodder. 



26. A single male butterfly was taken at Heart Kiver Crossing, 

 June 26, which resembles very closely Amblyscirtes vialis in the form 

 and neuration of the wings, in the structure of the legs and antennas, 

 and even in the coloration and markings of the wings, so far as these 

 could be made out from a somewhat rubbed individual; but there is 

 a perfectly distinct indication of a discal dash of raised scales, the 

 sexual mark of the fore wings in so many Astyci, which is altogether 

 wanting in Amblyscirtes. I await the reception of further material 

 before describing this interesting form. 



27. Ocytes TJncas (Edw.). One pair, both fresh, were taken 

 at Heart River Crossing, near timber in the valley of the river, June 

 26. At the crossing of the Big Muddy, on the open prairie, two fe- 

 males, one of them fresh, the other somewhat less so, were taken 

 June 28. 



28. Atrytone Logan (Edw.) Scudd. A torn and rubbed 

 male and a pretty fresh female were taken on the banks of the Yel- 

 lowstone, among sage brush on the river bottom, July 18. 



June 24, 1874. 



Vice-President S. H. Scudder in the chair. Thirty-two 

 persons present. 



Mr. Charles Stodder exhibited, with the microscope, a slide 

 showing some of the contents of a mastodon's stomach. The 

 material from which the slide was prepared, received through 

 the kindness of Mr. Morehouse, was obtained in Wayland, 

 N\ Y., and he had sent it to Dr. J. G. Hunt, of Philadelphia, 

 for determination and preparation. Respecting this material 

 Dr. Hunt reports as follows : — . 



The remains, both of cryptogams and flowering species were in 

 abundance. Stems and leaves of mosses, wonderfully distinct in 

 structure, so much so that I could draw every cell. I even readily 

 detected confervoid filaments, with cells arranged in linear series, re- 

 sembling species now found in our waters. Numerous small black 

 bodies, probably spores of the mosses, were found in abundance. Not 



