PKEFACE. 
IX 
Day, of Cheltenham ; Mr. A. de Bormans (Dubrony), of Brussels 5 
Mr. Henry Edwards, of New York ; Dr. Aug. Forel, of Munich ; Prof. 
Albert Gaudry, of Paris ; Dr. H. B. Geinitz, of Dresden; Mr. O. Har- 
ger, of New Haven; Mr. J. S. Kingsley, of Worcester; Dr. L. Koch, of 
Nuremberg; Mr. P. de Loriol, of Frontenex; Dr. A. W. Malm, of 
Gothenburg; Mr. Edward J. Miers, of the British Museum; Dr. A. B. 
Meyer, of Dresden ; Mr. P. O. Olsson, of Ostersund ; Mr. W. H. Patton, 
of Washington ; Prof. Felipe Poey, of Havana ; Dr. 0. Bitsema, of 
Leyden ; Dr. O. Staudinger, of Dresden, and Rev. T. R. R. Stebbing, of 
Tunbridge Wells. 
' Valuable notes were also communicated by Mr. J. A. Allen, of the 
Museum of Comparative Zoology, upon the genera of birds, and on the 
same by Dr. Elliott Coues, of Washington; Dr. Ph. Bertkau, of Bonn, 
kindly sent a list of recent genera of arachnida ; Rev. A. E. Eaton, of 
Bromley, notes of many genera of ephemeridae ; Prof. C. H. Fernald, 
of Orono, memoranda of Lord Walsingham’s genera; and the late Dr. 
Snellen van Vollenlioven, of the Hague, notes of various genera. 
Besides the complete lists of their genera sent by various naturalists 
many others responded to the circular asking for names introduced since 
1877, and full lists of these, some of them very extensive and all very 
welcome, are gratefully acknowledged from Dr. Joachim Barrande, of 
Prague ; Dr. Evald Bergroth, of Helsingfors ; Sen. J. N. Barboza du 
Bocage, of Lisbon ; Dr. Ignacio Bolivar, of Madrid ; Mr. George S. 
Brady, of Sunderland ; Rev. O. P. Cambridge, of Blandford ; the late 
Dr. Candbze, of Liege ; Mr. H. J. Carter, of Budleigh ; Mr. Y. T. Cham- 
bers, of Covington; Dr. Herman Friele, of Bergen; Mr. F. D. Godman, 
of London (including those established in conjunction with Mr. Salvin) ; 
Mr. G. Brown Goode, of Washington; Mr. H. S. Gorham, of Shipley; 
Mr. G. Bird Grinnell, of New Haven; Mr. A. R. Grote, of New Brigh- 
ton ; Dr. Richard Hertwig, of Jena ; Dr. A. A. W. Hubrecht, of Leyden; 
Count E. Keyserling, of Glogau ; Dr. R. Leuckart, of Leipsic ; Mr. G. M. 
R. Levinssen, of Copenhagen; Mr. Jules Lichtenstein, of Montpellier; Mr. 
Frederick Moore, of London; Dr. H. Alleyne Nicholson, of St. Andrews ; 
Baron R. von Osten Sacken, of Heidelberg ; Dr. G. O. Sars, of Christi- 
ania ; Baron E. de Selys Longchamps, of Liege ; Dr. David Sharp, of 
Thornhill; Dr. Signoret, of Paris; Mr. E. Simon, of Paris; Mr. W. J. 
Sollas, of Bristol; Dr. E. L. Trouessart, of Yilleveque; Dr. F. Yej- 
dovsky, of Prague, and Lord Walsingham, of London. Several others 
sent their recent publications. 
These contributions have added vastly to the value of the supple- 
mental list,* and having also delayed its appearance I have attempted 
* It may be remarked here that believing such contributions to be of some intrinsic 
value, at least as a corrective of errors in the printed list, the originals have, wher- 
ever possible, been preserved, collected into a volume, and deposited in the Museum 
of Comparative Zoology at Cambridge, where they can be examined together with the 
annotated Nomenclator of Agassiz. 
