42 DlCTYOSPONGID^. 



Geological Mmeum of the University of Oambridge, p. 176, 1873, the species 



is placed among the Sponges. 



1862. 



4. J. W. Dawson. Oti tlw Flora of tJie Devonian Period in Northeastern 



America. (Quarterly Journal Geological Society, vol. xviii, p. 325, 



pi. xvii.) 

 Under the name TJplumkenia Gliermingensis, the author figures a specimen 

 of Hydimceras taberosam from the Chemung group of New York and sug- 

 gests that such forms were the cylindrical stems of the flabellate fronds 

 described by Vanuxem under the former term. They are regarded " as Algce 

 with funnel-shaped fi'onds, sometimes prolonged into cylinders, and when 

 adult, bearing fructification in tubercles on the sides of the cylinders." 



1863. 



5. James Hall. Observations upon the Genera Uphantcenia and Dictyophytmi, 



with notices of some Species from the Chemung group of New YwTc and 

 tlie Wdverly sandstone of Ohio. (Sixteenth Ann. Rep. N. Y. State 

 Cab. Nat. Hist. pp. 84-91, pis. iii-v a.) 



A description is given of TIphantmnia Chemungensis with reprint from 

 the original cut, but without additional specimens. The genus Dictyophyton 

 is introduced, based upon the species I). Neivberryi, and, at the request of 

 Mr. Conrad (as stated in a foot-note to page 87), it is allowed to replace the 

 term Hydnoceras. The following species of Dictyopiiyton are described : 



D. Newberryi, nov. D. fenestratum, nov. 



D. filitextile, nov. D. annulatum, nov. 



D. Redfieldi, nov. D. tuberosum,, Conrad. 



D. Conradi, nov. D. nodosum, nov. 



D. rude, nov. 

 All of these fossils are regarded as marine Algae. 



1874. 



6. E. P. Larkin. Dictyophyton. (The Alfred Student, May, p. 53 ; A paper 



published under the auspices of Alfred University, at Alfred, Allegany 

 county, N. Y.) 



Describes a number of supposed variations of D. tuberosum and new 

 species, viz. : D. serratiim, D. angulatum., D. lobatum, D. cylindricum, D. 

 Imstatmn. The descriptions are very incomplete and, in the absence of illus- 

 trations, the forms intended can not be recognized. 



