89 



Dr. Wyman exhibited specimens of Brachycephalus ephip- 

 pium, Fitzanger, from South America. 



Like other Brachycephali, the superior and lateral surfaces of the 

 head are covered with an expansion of the cranial bones, and on 

 the dorsal region it is in addition provided with a long plate, resem- 

 bling a saddle ; this last is formed by the expansion of the spinous 

 processes of the dorsal vertebra?, and represents, in a rudimentary 

 manner, the dorsal plates of the Testudinata. 



He also exhibited preparations of the tegnmentary skele- 

 tons of the Scorpion. Cetonia and Dytiscus. 



Dr. Gould called the attention of the Society to a pam- 

 phlet on the Mollnsca of Vermont, by Prof. 0. B. Adams, 

 of Middlebury College. 



None but fresh water and land shells are found in Vermont ; 

 and of 87 species enumerated by Professor A., 28 have not yet 

 been found in Massachusetts ; 17 species belonging to Massachu- 

 setts are not enumerated as existing in Vermont, though TJnio radi- 

 atus, one of them, is known to be an inhabitant of that State. Prof. 

 A. distinguishes Pupa modesta from P. ovata ; Dr. G. regards the 

 former as the young of the latter. Pupa albilabris is named on 

 the authority of" Ward inedited" a deviation from the received rule 

 that no name can be recognized until published. This is the Cyclos- 

 toma marginata of Say ; but a change of name being requisite, P. 

 fallax, another of Say's names, has been adopted in the Report on 

 the Invertebrata of Massachusetts. 



ADDITIONS TO THE LIBRARY. 



Genessee Farmer, No. 10, Vol. III. Rochester, 1842. 8vo. pam. 

 H Colman, Editor. 



American Journal of Science and Arts, conducted by Professor 

 Silliman and B. Silliman, Jr. No. 2, Vol. XL11I. 8vo. New Haven. 

 Editors. 



Annals and Magazine of Natural History, No. 61 of Vol. 9, and 

 63 of Vol. X. 8vo. pam. London, 1842. Courtis Fund. 



Albany Gazette for Oct. 21, 1842. folio. Newspaper. Albany 

 Institute. 



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