TWO NEW SPECIES OF MUSCI; WITH FIGURES: By JOHN LEWIS RUSSELL. 

 POLYTRICIIUM. 



(Section I. Hooker.) Calyptra naked. CATHARINEA. Ehrh. 



POLYTRICHUM *INCURVATUM : NoblS. 



P. foliis lanceolatis suberectis, marginibus planis, apicibus 

 serratis : nervo valida multiplicato undulato : theca cylindracea 

 cerniuscula. 



06s. Forsan Polytriehum Lcevigatum. Wahlenberg. 



Description. Stems short, leaves rather delicate, remarkably 

 hygrometricj curling inward at the tips or apices, which are of a 

 reddish-brown color. Entire plant, scarcely an inch in height. 

 Perhaps it is Wahlenberg's P. laBvigatum, which it resembles in 

 having the calyptra " perfectly smooth.'* 



.Vote. HYLODES PICKERINGII. This beautiful native reptile, first described and figared 

 by Dr. Holbrook, in his North American Herpetology, will be found mentioned in this num- 

 ber under an incorrect name, viz. (Hyla femoralis, var. c.) see page 93. The Genus 

 Hylodea was separated from Hyla by Zitzenger, on account of the absence of a sternum, 

 (breastbone) as in the true Hyla. Our distinguished fellow townsman, Dr. Charles Picker- 

 ing, now attached to the Exploring Expedition, discovered it, in this vicinity, eight or ten 

 years since, and, as a new species, it has been dedicated to him : a tribute of scientific 

 respect. 



1839. 



(Section 2. Hooker.) Calyptra covered with filaments. 



POLYTRICHUM *BOREALE. Nobis. 



P. foliis lanceolatis acuminatis ; marginibus planis ; nervo 

 totali validissimo : caulibus brevissimis : pedunculo terminali 

 semiunciali : theca cylindracea recta, operculo conico, centro 

 breviter apiculato recurvato. 



