PALEONTOLOGY. 267 



111 tbe paper iu the American Journal of Science (2G0) be describes 

 tbe following new species cbaracteristic of tbe fauna of tbe so-called 

 "Taconic" of Emmons. 



Lingulflla (Iranvillcnsis, p. 188, pi. i, f. 15-15c. 



Linnarssouia Taconica, p. 189, pi. i, f. 18-18<7. 



Orihis Salemeusis, p. 190, pi. i, f. 17-17a. 



Ili/oJithelhis nucans, var. rngo-sa, n. var., p. 191, pi. i, f. 10. 



Modiolojjsis (??) prisca, p. 191, pi. i, f. 19. 



Leperditia {I) dermatoides, p. 192, pi. i, f. 13-13o. 



AristozoG rotundata, p. 193, pi. i, f. 9. 



Microdiacus counexus, p. 194, pi. i, f. A-\h. 



Olenoides Fordl, p. 195, pi. i, f. 5-r)&. 



Solcmplcura (?) tumida, p. 196, pi. 1, f. 2-2a. 



Ptychoparia Fitchi, p. 197, pi. i, f. G. 



Pti/clioparia (^?) (suhgcnus 'i) cJarata, p. 198, pi. i, f. 3. 



In tbe "Lower Tacouic" (262) be records tbe discovery of Hi/olithes, 

 Nothozoe Verniontmia, and Olenellus Asaplioides in tbe quartzites, and 

 Maclurea, Murchisojiia, and RapMstoma in tbe eastern limestone. 



Ilapbael Pumpelly (223) communicates a note on tbe fossils of Little- 

 ton, New Hampsbire. Tbese fossils were reported by T. Nelson Dale, 

 and were determined by 0. D. Walcott and C. Eominger, by wbom tboy 

 were referred to tbe Niagara age, wbile Billings determined otber fos- 

 sils, derived from tbe same formations by C. H. Hitchcock, to be of 

 Helderberg age. In a note in tbe iVmerican Journal, vol. xxxvi, p. 

 255, it is stated that C. H. Hitchcock referred tbese fossils to tbe Ni- 

 agara group. (See Whitfield, Amer. Journ. Sci., vol. xxv, p. 369.) 



In 18S8 Mr. Walcott (262) and Professor Dana (50) showed tbe im- 

 propriety of continuing tbe use of the name " Taconic system," and Mr. 

 Marcou (154, 155) defended the usage of" Taconic." In tbe meeting of 

 the International Congress at London tbe facts regarding tbe discovery 

 of fossils of the faunas of tbe Lower Silurian appeared as conclusive 

 argument against therecognitionof the " Taconic System," and theterms 

 " Cambrian," " Lower Silurian," and " Upper Silurian " were accBi)ted 

 for the three lower systems of tbe Palaeozoic. 



THE SILURIAN, LOWER AND UPPER. 



Henry M. Ami has published several brief articles on the Paleontol- 

 ogy of the Paleozoic rocks in Canada (3, 4, 5, 6, 7, 8, 9). In vol. i of 

 the Ottawa Naturalist (3) tbe author refers to the occurrence of Siphono- 

 trcta Scotica, Davidson, in association with a fauna of tbe Utica forma- 

 tion in a band of impure limestone on the banks of the Rideau River, 

 near Ottawa. In the transactions of the Field Naturalists' Club (8) bo 

 gives further account of the Utica fossils from Rideau, and notes their 

 X)Osition in the section wliicb he examined along Cricbton street. Sev- 

 eral species are recorded as new to the locality, and two, marked as 

 new species, are referred to Ambonychia and Mcioptoma. In tbe article 

 in the Canadian Record of Science (9) he discusses the fossils from the 



