TH 



UNIVERSITY 



OF 



PREFATORY NOTES. 



THE collections to which these Catalogues refer is confined to the 

 Fauna of Europe, together with that of the Arctic and North Atlantic 

 Oceans, including the Seas connected with them. 



The North Atlantic Ocean is here regarded as terminating towards 

 the South at lat. 35 N. ; or, at a line drawn from a little to the South 

 of the Straits of Gibraltar on the Eastern, to about Cape Hatteras on 

 the Western side. This boundary is adopted as perhaps the best to 

 embrace the Arctic and Temperate regions, and, at the same time, to 

 exclude the tropical animals of the Gulf of Mexico. The entire area 

 of the Mediterranean is of course included. 



These Catalogues are printed in order to make known to Curators 

 of Museums and private Naturalists the present condition of my 

 collection, and to invite exchange. 



Opportunities of adding species, which are among my desiderata, 

 either by exchange or purchase will, I hope, thus be afforded to me. 



I shall be glad to send, in return for animals received, species either 

 from the present or other classes of Invertebrata which may be 

 preferred. Of course it will be understood that a Catalogue which 

 embraces my entire collection necessarily includes a large number of 

 forms of which there are no duplicates. 



Letters should be addressed, 

 BURNMOOR RECTORY, 



FENCE HOUSES, 



Co. DURHAM, ENGLAND. 



In the following table will be found a summary of the total number 

 of the several orders of described Crustacea which inhabit Europe and 

 the Arctic and North Atlantic Oceans. It will be seen that their 

 number is nearly three times as great as that of the species of the entire 

 world known to Milne Edwards when he published his classical work. 

 While, on the one hand, it is certain that very many of the forms in 

 column III. will hereafter prove spurious or synonymous with others : 

 on the other hand, we know little of the Amphipoda of the Western 

 Atlantic, and nothing of the Ostracoda free living Copepoda and other 

 smaller Crustacea of that district, and very little of those of some other 

 parts of the area. I venture to prophecy that when the Crustacean 



