10 CARBONIFEROUS TRILOBITES. 



60. 1879. Prof J. D. Dana, in his ' Manual of Geology' (3rd edition, New 

 York), p. 304 and p. 308, refers to the Carboniferous Trilobites Phillijpsia, 

 Griffilhidcs, and Brachymetopiis, and at p. 342 he records Ph. Missouriensis, P. 

 major, and P. Cliftonensis, Shumard, from the Upper Coal-measures of Missouri ; 

 and P. scitnla, M. and W., common in Illinois and Indiana. At p. 308 he gives a 

 figure of Phil. {Griffithhl es) seminifera (after De Koninck), and quotes also 

 P. pustulaia, as occurring in the Irish Rocks. 



67. 1879. Peof. H. A. Nicholson, in his 'Manual of Palgeontology ' (2nd 

 edition), 2 vols., p. 371, gives the distinguishing characters of PhilUpsia and 

 Grifjithkles, but figures PhilUpsia {Qriffithides) seminifera (reproduced from Dana's 

 ' Geology.') 



68. 1879. Peop. A. von Koenen, of Marburg, in the ' Ncues Jahrbuch fiir 

 Mineralogie, Geologic und Palaeontologie ' (p. 309), gives a description of " The 

 Culm Fauna from Herborn," consisting of more than fifty species; and he 

 describes two species of PhilUpsia, viz. Ph. aiqualis, H. von Meyer, sp., and P. 

 latlspinosa, Sandberger, sp. 



69. 1879. Me. Robert Etheeidge, Jr., in ' Explanation of Sheet 31, Memoirs 

 of the Geological Survey of Scotland' (p. 81), refers to the occurrence, in "The 

 shale above the Castlecary Limestone," of remains of a species of PhilUpsia, 

 nearly allied to P. pustulata, Schlot., or P. seminifera, Phillips. 



70. 1882. Peop. a. Geikie, LL.D., F.R.S., in his ' Text-book of Geology ' 

 at p. 724, under the Carboniferous Fauna, observes, " Trilobites now almost wholly 

 disappear, only two or three genera of small forms {Grlffithidcs, PhilUpsia, Brachy- 

 metopus) being left." 



