iqiq] BASSLER—SPORANGIOPHORIC LEPIDOPHYTE 103 



Camp Miller, Spitzbergen, from beds which have been correlated with the 

 Calciferous sandstone series of Scotland and the Pocono of the Appalachian 

 Province. 



Cantheliophorns has a wide geological range which, like the 

 ranges of the several species, may be extended as the result of 

 careful systematic study of other collections, the stratigraphic 

 position of which is known with precision, and it is to be expected 

 that the limits of the normal ranges of some of these dimensions 

 will be somewhat extended, while all of them are likely to be crossed 

 occasionally in the case of supernormal or subnormal individuals. 



The genus appears from the evidence in hand to have become 

 extinct about the close of the Allegheny as the result of certain 

 conditions which were unfavorable to arboreal types, for the tree 

 Lycopods were very greatly restricted at this time. The first 

 red beds of the continental period of the Permo-Pennsylvanian 

 appear in Maryland less than 100 ft. above the highest occurrence 

 of Canlheliophorus. 



Concerning new specific names 



In conclusion we feel that we should urge that greater care be 

 exercised in the selection of new specific and even generic names 

 by the paleobotanists who are devoting themselves to the study of 

 structural material. Maslen (14) in 1899 proposed the specific 

 name Joliaceous for an unnamed species of Lepidostrohus figured 

 earlier by Williamson (38), overlooking the fact that Lesquereux 

 (13) in 1880 had already used this combination. The specific 

 name V eltheimianus proposed by Scott for a petrified cone of 

 Lepidostrohus from the Calciferous sandstone of Scotland, also 

 figured by Williamson, was employed in the same connection in 

 1873 by Feistmantel (ii) for the impression of an entirely different 

 cone from the Lower Carboniferous of Rothwaltersdorf. Silesia. 

 The name Lepidostrohus gracilis, proposed in 1914 by Mrs. Agnes 

 Arber for a petrified cone from the Lower Coal Measures of Great 

 Britain, was employed in 1853 by Newberry (17) for a cone from 

 Cuyahoga Falls, Ohio, and again in 1877 by Schmalhausen (25) 

 for a different cone from the Ursa Stufa of Ogur, Siberia. Scott 

 and Jeffrey (30) in 1914 published a description of a petrified 



