48 



value to his observations on the genera 

 Rana and Hjla. The same subject has 

 been further investigated by Dr. Harlan, 

 who has contributed Descriptions of several 

 new species of Batrachian animals^ with obser- 

 vations on the larvce of Frogs^ which may be 

 found in the tenth volume of the American 

 Journal of Science. 



The doubtful reptiles, of which five spe- 

 cies are already known to exist in the 

 United States, have been attentively ob- 

 served by Dr. Harlan, and his able papers 

 on that subject in our Annals, will be con- 

 stantly referred to by the American herpe- 

 tologist. In the same Journal will be found 

 remarks by Captain Le Conte on the genus 

 Siren, and the description and figure of a 

 striking species. Our former president. Dr. 

 Mitchill, has described in the American 

 Journal of Science, that singular reptile 

 which he has designated as the Proteus of 

 the Lakes. Another allied animal, the Am- 

 phiuma of Dr. Garden, has been known for 

 fifty years, but by some oversight had not 

 been arranged in the systems, and, indeed, 

 was entirely forgotten until it was again 

 brought forward and described under the 



