238 ANNALS OF SCOTTISH NATURAL HISTORY 
The following are the notes on two species of Marine 
Copepods :— 
DERMATOMYZON GIBBERUM, Z: and A. Scott. 
1894. Dermatomyzon gibberum, T. and A. Scott, “Ann. and Mag. 
Nat. Hist.” (vi.), vol. xu. p: 144, Plate 1X. Migs osug 
This species was described from a single specimen obtained in 
a tow-net gathering collected in the vicinity of the Bass Rock, Firth 
of Forth. Its structure seemed to indicate parasitic habits, but 
there was nothing at the time of its discovery to show what animal 
formed its host. In the early part of this year one of the authors, 
while superintending some line-fishing experiments in the Firth ot 
Forth, collected a number of specimens of the common Starfish 
(Asterias rubens) that were brought up attached to the hooks. 
These starfishes were subsequently washed in a bottle containing 
methylated spirit, and the result was that nearly one hundred speci- 
mens of Dermatomyzon gibberum were obtained, most of which, 
however, appeared to be immature, and only a few of them carried 
ovisacs. A short time after the capture of these specimens in the 
Firth of Forth, several examples of this starfish obtained in Liver- 
pool Bay were examined, and these also, on being washed in 
methylated spirit, yielded a number of specimens of Dermatomyzon 
gibberum, but in this case, though the specimens were not so 
numerous as those taken in the Forth, a greater proportion of them 
were mature and carried ova. From these and other investigations 
made by us, we are inclined to think that this Copepod is probably 
parasitic on Asterias rubens, but whether it is confined to that star- 
fish we are as yet unable to say. 
The colour of the animal is brick-red, with a few whitish streaks, 
so that in the fresh state Dermatomyzon gibberum is not unlike the” 
young of the mollusc Pectunculus glycimeris. The colour, however, 
soon disappears when the animal is put into methylated spirit. 
LICHOMOLGUS HIRSUTIPES, Z\ Sco??. 
1893. Lichomolgus hirsutipes, T. Scott, “ Eleventh Annual Report of 
the Fishery Board for Scotland,” part iii. p. 286, Plate IV. Figs. 1-12. 
This is a comparatively large Copepod, being in some cases at 
least 1; of an inch in length. It was first obtained among some 
trawled material collected in the Firth of Forth at the “ Rath 
Ground,” a shallow bank situated a short distance north of the Bass 
Rock. Lichomoleus hirsutipes, like the Dermatomyzon just described, 
appears to be more or less parasitic in its habits, but at the time of 
its discovery we did not know of any animal with which it was 
likely to be associated. During the same line-fishing experiments 
that are referred to in the notes on Dermatomyzon gibberum, various 
