ON THE BRITISH EDRIOPHTHALMA. 23 



closed) described several Scottish species. Prof. AUman, in the ' Annals 

 of Natural History ' for 1 847, published a memoir on the Chelura tere- 

 brans. 



But even on the continent the study of these animals has not been a 

 favourite pursuit, and few naturalists have examined for themselves beyond 

 the external form and general arrangement of structure. Hence we find 

 that each of the few actual observers is inclined to adopt some new scheme 

 of generalization for himself, founded on some peculiar fact more or less 

 common to the tribe. This will continue to be the case until the anatomy 

 and development be properly displayed, and their structure demonstrated la 

 comparison with other known types. 



The labours of the great French carcinologist are among the best known, 

 and certainly the most recognized and appreciated of any of the systematic 

 works on Crustacea. But the investigations of KoUiker, Miiller, and the 

 labours of Von Siebold are valuable both in interest and importance. But 

 these have, probably from their inland position, confined their researches 

 chiefly to the internal structure of the Isopoda. 



Rathke's contributions to the fauna of the Crimea are not only valuable 

 for the addition of animals from a region that has been little examined, but 

 ai'e noticeable for great accuracy of delineation in minute detail, which make 

 them second to none, if not before all others, in value, for truthfulness and 

 the close observation of the author. But Prof. Kroyer appears to have been 

 the one of all the naturalists who has entered upon the investigation of this 

 order in a manner which induces us to believe that he felt the import- 

 ance of its close and extended observation, and his great work, entitled 

 ' Voyages en Scandinavie, en Japonic, Spitzberg, et en Feroe,' is a labour, of 

 which it is to be regretted Europe has so few examples. 



Recently, Mr. Dana has given to the world a great work on the Crustacea 

 as the result of his researches in the southern seas, where he was sent by the 

 United States Government. This work, of which the plates have only been 

 published since this paper has been in the press, will rank its author as second 

 to no European carcinologist, and during the course of this Report, the work, 

 though but recently obtained, will be found frequently alluded to and 

 quoted. 



In furnishing to the best of our opportunities this Report to the British 

 Association for the Advancement of Science, we are aware of shortcomings. 

 These chiefly arise from inability of obtaining foreign works published many 

 years since, "and others difficult to be procured. But these faults (not many 

 or important, we hope) might have been more considerable but for the kind- 

 ness of friends, who willingly supplied us with those in their possession. In 

 this way we are indebted mostly to John Lubbock, Esq., Col. C. Hamilton 

 Smith, C. Darwin, Esq., and J. O. Westwood, Esq. 



To study the results of other observers in connexion with a British fauna, 

 it became desirable that specimens should be obtained from as many and 

 distant localities as possible. In pursuance of this plan, we have many 

 valued friends to thank, and if gratitude is to be measured in proportion to 

 liberal communications and generous supplies, then we are most indebted to 

 our highly esteemed correspondent the Rev. George Gordon, Bernie Manse, 

 near Elgin, for many most interesting species, among which are some that 

 are additions to the British fauna, as well as others that are new to 

 science. 



Our kind friend, George Barlee, Esq., so well known to naturalists by his 

 dredging results, has sent us many valuable collections from Penzance, St. 

 Ives, and the Arran Isles. So also from the first of these localities we have 



