REPORT OF THE DIRECTOR 1^12 



31 



of New York. The work has now been completed and issued. 

 It is the summation of many years of labor in the acquisition and 

 study of this interesting extinct group of animals, which, by vir- 

 tue of their abundance and variety in the rocks of New York, 

 form one of the very striking features of its paleontology. This 

 memoir is presented in two volumes, one of text and one of 

 plates, the pages numbering 628 and the plates 88. A conception 

 of the contents of the memoir is conveyed by its table of con- 

 tents : 



Volume I 



PAGE PAGE 



Preface 5 Eurypterida III C Geological 



Introduction: distribution in other 



History of investigations... 13 countries 94 



Eurypterida I Morphology, an- D Bionomy of the eurypterid 



atomy, and terminology 23 faunas 96 



II Mode of life 71 IV Ontogeny 113 



III Geological distribution and V Phylogeny 124 



bionomic relations 85 VI Taxonomic relations 135 



A Conspectus of American VII Synoptic table of North 



species arranged ac- American Eurypterida. 149 



cording to their geo- VIII Systemic account of the 



logical occurrence 85 Eurypterida 152 



B Biologic facies of the Eurypteridae 152 



eurypterid faunas 90 Pterygotidae 329 



Appendix 385 



Bibliography 432 



Volume 2 



PAGE PAGE 



Explanations of plates 441 Index 617 



In last year's report a brief notice was given of an extraordi- 

 nary section of the Siluric rocks on the Bay of Chaleur, at Black 

 Cape. Previous to this account, only very brief notice had been 

 taken of this place in the geological reconnaissance of that re- 

 gion, but as this section proves to be one of the extraordinary 

 developments of the Siluric system, attaining a thickness of de- 

 position perhaps not elsewhere equaled, it seemed very desirable 

 to have a more exact examination of it made. With the consent 

 and substantial support of the director of the Geological Survey 

 of Canada, C. A. Hartnagel of this staff was detailed to this work. 



Black Cape lies on the north shore of the Bay of Chaleur, seventy 

 miles east of Matapedia and directly east of the valleys of the Grand 



