137 



JuJy% 1851* 

 Dr. C. T. Jackson, Vice-President, in the Chair. 



Dr. Kneeland presented, in behalf of Mr. Charles Girard, 

 a communication entitled, — - 



Descriptions of a new Planaria and a new Nemeries from 

 the coast of Florida. 



Thysanozoon nigrum Girard. General form elongated and 

 oblong; length of the single specimen examined, an inch and a 

 half; breadth nearly three fourths of an inch. Color uniformly 

 black above and dusky white beneath. Upper surface of the 

 body entirely and regularly covered with cutaneous appendages 

 from one to two lines long, cylindrical, and of the same black 

 color as the body itself. Cephalic tentacles proportionally short, 

 black, and would scarcely appear different from the dorsal ap- 

 pendages, were they not flattened from their very base. 



Meckelia atra Girard. Length of specimen about six inches. 

 Body more or less depressed, apparently much less, however, 

 than in M.fragilis, from New England. Anterior extremity 

 more prominent than in the latter species and of a lighter hue, 

 thus contrasting with the color of the rest of the body, which is 

 of a uniform black throughout. Antero-superior opening pear- 

 shaped, the narrower extremity turned forwards, whereas it is 

 more or less circular or oval in our M. fragilis. 



Both of the above species were collected last spring at Cape 

 Florida, by my friend L. F. Pourtales. The specimens are pre- 

 served at the Smithsonian Institution. 



Mr. H. R. Storer read some memoranda of facts observed 

 by him, extending the geographical range of certain North 

 American reptiles, as follows, namely : — 



1. Coluber vernalis Dekay. Has been seen in Maine. 

 Found by me on the Island of Grand Manan, Bay of Fundy. 



* The publication of the Proceedings of the two meetings in July and the 

 second meeting in August in their proper place was accidentally omitted ; they are 

 therefore inserted here. 



