Palaeontologie. 495 



Steno gramma Interrupta among the Rhodophyceae. Heretofore 

 much uncertainty has existed with respect to the identification 

 of algae of this type, and Mr. White therefore carefully se- 

 parates it from Psilophyton on the one hand and on the other 

 from Haliseritis dechenianus Gopp. which has often been con- 

 founded with the remains of Psilophyton and other forms 

 appearing nnder distinct generic names and even with plants 

 of such diverse character as Lycopodites Milien and Lepido- 

 dendron gaspianum. The conclusion is reached that the name 

 tialiserites can not, without violation of the common Iaws of 

 nomenclature, be retained either for Psilophyton or for a genus 

 of Palaeozoic thallophytes. 



For Haliserites dechenianus as defined by Penhallow 

 (Proc. U. S. Nat. Mus., 1893, p. 112, pl. 10, fig. 6) the name 

 Taeniocrada is suggested. This genus has its type in T. 

 Lesquereuxi as applied in manuscript several years since, to a 

 specimen from the Catskill beds at Factoryville, Pa. In form 

 and aspect it most nearly resembles Dictyopteris delicatnla 

 Lam., though its lamina is wavy or ruffled at the borders. 

 The Suggestion is made that such forms as Thamnocladus, 

 while presenting the general aspect of many ordinary seaweeds, 

 may eventually prove to be allied to Nematophycus or to some 

 higher type. D. P. Penhallow. 



White, David, Stratigr[aphy versus Paleon tology ijn 

 Nova Scotia. (Science N. S. XVI. 1902. p. 232.) 



The discussion relative to the age of certain Palaeozoic 

 deposits in the region of the Bay of Fundy and the relative 

 value of stratigraphy and palaeontology in determining age, is 

 continued by Mr. David White who advances arguments in 

 favor of the latter. On stratigraphical grounds, the fossiliferous 

 terranes at Riversdale, N. S. have been referred to the Middle 

 Devonian and also correlated with the „fern ledges" of the 

 Little River Group at St. John. While this correlation is con- 

 curred in by both Mr. Robert Kids ton and Mr. White on 

 the basls of independent data, both these authorities agree in 

 referring these plant beds to the Carboniferous, and it is pointed 

 out that the data afforded by the plants are also supported by 

 the animal remains. The argument centers largely in Megalop- 

 teris which Mr. White points out does not occur lower than 

 the Pottsville series. D. P. Penhallow. 



Zalesski, M., Ein Verzeichniss von Pflanzenresten 

 aus den Steinkohleablagerungen des Donez- 

 Bassins, die im Geologischen Cabinet der 

 Jekaterinoslawschen höheren Bergschule auf- 

 bewahrt werden. (Annal. für Mineralogie und Geologie 

 Russlands, herausgegeben von N. Krischtafowitsch. 

 Bd. V. Lief. 4 u. 5. Neu-Alexandria 1902. p. 99—100.) 



