DESCRIPTIONS OF GASP]£ FAUNAS 



I FAUNA OF THE ST ALBAN BEDS 

 Phacops logani Hall 



Sec- further p. ii8 



Grande Cavee of Griffon Cove river. 



Dalmanites griffoni nov. 



Plate 7, figure 4 ; plate 9, figure 4^ 



There occurs in the Grande Cavee outcrops a Dalmanites having the 

 characters of D. niicrurus Green. In lobation of tail there is little to 

 distinguish it from that species and the general outline of the head and of 

 the glabellar lobes is similar, but in excavating these fossils from the com- 

 pact residual clay into which the rock has altered I observed and made sketch 

 of a cephalon on the anterior limb of which was a very pronounced elon- 

 gate and spatulate extension, as is represented in outline in our figure. This 

 was so fragile that I was unable to preserve it and no other specimen of the 

 cephalon was complete in this frontal region. It is such a prolongation or 

 snout as one sees in Salter's figure of D. 1 o n g i cau d a t u s (British 

 Trilobites, 1864, pi. 3, fig. 19) from the Wenlock shale which one may 

 regard as an incipient condition of the Probolium condition. It seems, 

 hence, eminently appropriate to find this development accompanying a con- 

 dition of complete glabellar lobation characteristic of true Odontochile, 

 and likewise to find this expression of Dalmanites in earliest Devonic as 

 well as in latest Siluric rocks. 



Dalmanites coxius nov. 



Plate 7, figure i 



Among the specimens loaned for this study from the collections of the 

 National Museum is a rather large pygidium labeled as from " between 

 Cape Gaspe and Cape Rosiers." This locality would seem to be along the 

 line of the road leading from Grande Greve to Cape Rosier as the rocks 

 are not elsewhere accessible in this region except by cruising about Ship- 

 head and along the coast. This pygidium is subequally triangular and 

 distinctly flat with relatively narrow axis and broad sides. The margins 

 have a slight outward curve and meet behind in a short broad caudal spine. 

 The pleural ribs extend very nearly to the margin and on the cast they 

 appear to be elevated abruptly on the posterior edge and slope gradually 

 from this edge upward. The same character is noticeable on the segments 

 of the axis. The intervening grooves are thus not sharply defined except 



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