VIII PREFACE. 



Zoological Record especially fitted him to do ; from his colleagues on 

 the Zoological Record, Dr. C. F. Liitken, of Copenhagen, who kindly 

 furnished memoranda of recently established genera of coelenterates 

 and echinoderms ; and Dr. E. von Martens, of Berlin, who sent a very 

 extensive list of recently established genera of mollusca. 



Only less extensive than these have been the lists and memoranda re- 

 ceived from numerous other naturalists. Mr. P. H. Carpenter, of Eton 

 College, sent an annotated synopsis of all the genera of recent and fossil 

 comatulidae ; Mr. Walter Faxon, of the Museum of Comparative Zoology, 

 furnished numerous references to old and new genera of Crustacea ; his 

 colleague, Mr. S. Garman, the same of fishes and reptiles ; Dr. Gestro, of 

 Genoa, a complete list of all genera published in the Annali del Museo 

 Civico in 1878 and 1879; Prof. D. S. Jordan, of Bloomington, a long series 

 of generic names of fishes, including all established by himself; Dr. G. 

 Lindstroin, of Stockholm, many genera of fossil corals ; Mr. Theodore 

 Lyman, of the Museum of Comparative Zoology, a list of the genera 

 of astrophytidae and ophiuridae published in 1878 and 1879 ; Mr. R. 

 McLachlan, of London, notes of many overlooked genera of orthoptera 

 and neuroptera ; Mr. J. Monell, of Saint Louis, a synonymic list of all 

 genera of aphidae ; Dr. W. Peters, of Berlin, lists of the recent genera 

 proposed by the staff of the Berlin Museum ; my lamented friend Count 

 L. de Pourtales, of Cambridge, the recent genera of echinoderms ; the late 

 Mr. J. Duncan Putnam, of Davenport, a list of the genera in the Proceed- 

 ings of the Davenport Academy ; Mr. C. V. Riley, of Washington, notes 

 on some of his genera ; Mr. E. C. Rye, of London, sundry overlooked 

 genera and corrections in previous lists ; Sir S. S. Saunders, of London, 

 similar memoranda in coleoptera; Dr. H. de Saussure, of Geneva, brief 

 notes on some of his own genera; Prof. S. I. Smith, of Yale College, 

 various memoranda and corrections in MarschalPs Nomenclator, as well 

 as a list of his own genera ; and Mr. F. M. Van der Wulp, of the Hague, 

 a list of the genera established in recent years by the Dutch entomolo- 

 gists, mostly from the Tijdschrift voor entomologie. 



As already stated, many naturalists furnished me with complete lists 

 of all the genera established by them ; prominent among these, from the 

 great extent of their lists, besides some already incidentally mentioned, 

 are Prof. E. D. Cope, of Philadelphia; Prof. James Hall, of Albany; 

 Dr. G. H. Horn, of Philadelphia ; Prof. A. Hyatt, of Boston ; Dr. J. L. 

 Le Conte and Dr. Joseph Leidy, of Philadelphia ; Prof. O. C. Marsh, of 

 New Haven (who had the goodness to put his copy in print for me) ; 

 the late Dr. A. Menge, of Danzig; Dr. A. S. Packard, of Providence; 

 Dr. O. M. Reuter, of Helsingfors; Dr. T. Thorell, of Genoa, and Prof. 



A. E. Verrill, of New Haven, to all of whom my best thanks are due. 

 Shorter similar lists are also gratefully acknowledged from Mr. W. G. 

 Binney, of Burlington ; Mr. Charles Brongniart, of Paris; Mr. George 



B. Buckton, of Haslemere ; Mr. W. S. Dallas, of London ; Mr. D. C. 

 Danielssen, of Bergen ; Dr. J. W. Dawson, of Montreal ; Dr. Francis 



