104 ; REPORT—1863. 
Strémii, has been taken in Shetland by the Rey. A. M. Norman; the other two, 
viz. Nymphon miztum and Nymphon longitarse, have been taken by myself on the 
Durham coast. 
The following list contains all the species at present known to inhabit the British 
seas :— 
Nymphon, Fabricius. Achelia, Hodge. 
gracile, Leach. echinata, Hodge. 
ossipes, Fabricius. hispida, Hodge. 
emoratum, Leach. levis, Hodge. 
pictum. _ Pallene, Johnston. 
giganteum, Johnston. brevirostris, Johnston. 
longitarse, Kroyer. circularis, Goodsir. 
mixtum, Kroyer. pygmea, Hodge. 
Strémii, Kroyer. Phoxichilidium, M.-Edwards. 
hirtum, Fabricius. coccineum, Johnston. 
brevitarse, Kroyer. globosum, Goodsir. 
Johnstoni, Goodsir. olivaceum, Gosse. 
spinosum, Goodsir. petiolatum, Arvéyer (Pallene at- 
pellucidum, Goodsir. tenuata, Hodge). 
simile, Goodsi. virescens, Hodge. 
minutum, Goodsir. Pasithoé, Goodsir. 
brevirostre, Hodge. vesiculosa, Goodsir. 
Ammothoa, Dana. Phoxichilus, Montagu. 
brevipes, Hodge. spinosus, Latreille. 
longipes, Hodge. Pycnogonum, Fabricius. 
littorale, Strdm. 
There can be little doubt that a careful examination of the species found on 
various parts of our coast would add many new forms to this list, especially amongst 
the smaller species. 
Whilst most departments of marine zoology have made rapid strides within the 
last few years, our knowledge of the Pycnogons has scarcely advanced. No doubt 
this is owing in a great measure to the difficulty in determining the species in con- 
sequence of there being no complete list. It is hoped the foregoing may in some 
degree supply this want, and lead to these animals being better known and under- 
stood. 
On the Roman Imperial and Crested Eagles. 
By Joun Hose, MA., F.RS., LS., Se. 
The author, in giving an account of the Roman Imperial Eagle and several 
crested or crowned Eagles, showed that the former bird is the Aguila heliaca of 
pe which, in many of its characters, resembles our Golden Eagle (4. chry- 
saétus). 
The Roman Eagle was not crested ; and when lately engaged on his Memoir on 
Baalbec, the author was led to inquire if any existing species of the Eagle tribe 
could really have been the type of the beautifully sculptured crested Eagles which 
are seen in the pomp of the Sun at Baalbec and at Palmyra, in Syria. 
The author then described several crested or crowned Eagles, two of which are 
natives of Africa, viz. Aguila Desmursti and Spizaétus coronatus ; and these, with the 
Crested Indian Eagle, Spizaétus cirrhatus, inhabiting Nepal and India, might have 
been Inown to the Roman artist, and so have been taken for the model of those 
sculptured birds. He further described the Thrasaétus harpia, furnished with a 
larger crest, as well as that noble bird recently added to the Eagle-collection in 
the Zoological Society’s Gardens in the Regent’s Park, the Harpyhaliaétus coronatus 
of Temminck; but since both these species are natives of South America, they 
could not have influenced the sculptors in their selections of a type. Hence it is 
probable that one or both of the fie birds might have afforded to the Roman 
artists, suggestions for the modelling of the crested Eagles, which are so well 
executed in the temples of those ancient cities. 
Mr. Hogg illustrated his descriptions with several drawings which he had made 
of those sculptured Eagles, and of some of the species under consideration. 
