Marine Dredgings and other Natural History Materials. 173 
the fingers. Munida rondeletii, another species of the Anomura 
in the collection, is of interest because of its remarkably long 
chelipeds. A considerable number of specimens of Munda 
occurred in a gathering from Loch Spelve. 
Five species of Schizopods were obtained in the collection, 
viz.—Mysidopsis didelphys, Mysis flexuosus, Mysis inermos, 
Mysis lamorne, and Neomysis vulgaris. The latter occurred 
in great abundance in a gathering from Loch Dow. Mysis 
lamorne, when alive, is of a bright red colour, and its eyes 
are large and black. 
The next group deserving of special notice is the 
Amphipoda. I find it difficult to select species for reference 
here, for almost all of them are of interest. Hyperia galba, 
with its large beautiful eyes, is not nearly so plentiful on the 
West Coast as it is on the East Coast of Scotland. I was 
therefore the more surprised to find a considerable number 
of specimens in Mr Brook’s collection. Lysianassa coste, 
Phoxocephalus Holbolli, Ampelisca assimilis, Haploops tubi- 
cola, and Leucothoe Lalljeborgw are all of special interest. 
Eusirus longipes, a somewhat rare species with curious 
gnathopods, occurred in considerable numbers in a gathering 
from Loch Linnhe near Fort William. Dexamine spinosa 
appears to have a distribution the reverse of that of Hyperia 
galba ; this Dexamine, though not uncommon on the West 
Coast, is, so far as my experience of it goes, much rarer on 
the Hast Coast—I do not have a single Kast Coast specimen 
in my collection. Cheirocrates Sundewalli, Gammaropsis 
erythrophthalmus (with its red eyes), Pleonexes gammaroides, 
and Podocerus Herdmanni, are also all more or less interesting. 
A species which has the posterior gnathopods armed with 
enormous claws was represented only by a fragment, con- 
sisting of the anterior half, extending from the head to 
the second gnathopod. I have not been able to identify 
this with any British species, and therefore submit the 
following description :— 
(?) Mera Brooki, sp.n. [Pl. V., Figs. 1-6.] 
Description of the Species—Cephalon nearly as in Mera 
othonis (M.-Edw.), lateral corners produced and narrowly 
rounded. Eyes small. Superior antennz elongated and 
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