II—SOME ADDITIONAL NOTES ON COPEPODA FROM 
THE SCOTTISH SEAS. 
By THomas Scott, LL.D., F.L.S., Mem. Soc. Zooi. de France. 
(Plates XITI.—XV.) 
The descriptions of several of the new or rare Copepoda obtained 
during the investigations that have been carried out under the direction 
of the Fishery Board for Scotland, and published in the earlier Annual 
Reports of the Board, were for various reasons somewhat incomplete. In 
_ some cases only the female was available for description, the male being 
at the time unknown; while in others, where the species, though rare, 
was already established, only the fact of its occurrence in our seas was 
recorded and the description of it left to some future occasion. 
In the remarks which follow I have, with the help of the drawings ~ 
prepared for me by my gon Andrew Scott, A.L.S., endeavoured to 
describe somewhat fully three curious forms obtained from different 
‘Scottish localities, where they have occurred in sufficient numbers to 
permit of a more accurate study of the peculiar characteristics by which 
they are distinguished than was possible at the time they were first 
recorded. 
These species include the two Harpacticoida Harrietella simulans, T. 
Seott, and Laophontodes typicus, T. Scott, of which only the females 
have been previously recorded, together with a description of what 
appears to be the male and female of a remarkable species known as 
Notopterophorus papilio, Hesse, found as a commensal in the branchial 
chamber of large Ascidians. 
Descriptions are also given of two Copepod parasites of fishes which 
do not appear to have been previously recorded, and which belong to a 
somewhat aberrant genus of the Caligoida, viz., Nogagus. 
These different forms are described in the sequel in the order in which 
they are here referred to. 
It may also be stated that the species mentioned above, though only 
now described, have been-in my possession for several years, the 
_ publication of their description having been for various reasons delayed. 
Division Harpacticoida, G. O. Sars, 
Fam. Laophontide, G. O. Sars. 
Genus Harrietella, T. Scott. 
Harrietella simulans, T. Scott. Pl. xiii., figs. 1-5. 
1894 (?) Laophonte simulans, T. Scott, Twelfth Annual Report 
of the Fishery Board for Scotland, Pt. III., p. 248. Pl. vii., 
figs. 24-32. 
1906. Harrietella simulans, T. Scott., Ann. and Mag. Nat. Hist. 
Ser. 7, vol. xvii., p. 464, pl. xi., figs. 9 and 10. 
The structure of Harrietella simulans is in some respects similar to 
that of Laophonte, Philippi, and, therefore, while differing considerably 
In one or two points, it was, when first discovered, ascribed, though 
