° 
new and rare Crustacea from Scotland. 463 
(Canthocamptus) brevipes, G. O. Sars. It was discovered in 
some hand-net gatherings from Loch Lubnaig, Perthshire, 
collected in September last. A description, with drawings, 
of it will be published in the ‘Thirteenth Annual Report of 
the Fishery Board for Scotland.’ 
PSEUDOTHALESTRIS, G. S. Brady. 
Pseudothalestris, G. S. Brady, Report on the ‘ Challenger’ Copepoda, 
p- 100, pl. xlii. figs. 1-8 (1883). 
In the Report on the ‘ Challenger’ Copepoda Dr. Brady 
has described a new genus of the Harpacticide under the 
above name. He had only asingle specimen (a male), which 
he describes as being like Thalestris ; its characters were so 
marked, as to be of generic rank. This Copepod was 
obtained by Dr. Brady in a gathering from Betsy Cove, 
Kerguelen Island (lat. 49° 16’ S., long. 70° 12! E.). 
Last year one of the authors of this paper instituted a new 
genus— Pseudowestwoodia—tor the reception of a Copepod that 
closely resembled Westwoodia nobilis (Baird) in general 
appearance, but differed in some important structural details. 
The genus Pseudowestwoodia was described, with illustrative 
drawings, in the ‘Twelfth Annual Report of the Fishery 
Board for Scotland,’ published last year. Descriptions of 
other two species of the same genus were published by us in 
the ‘ Annals and Magazine of Natural History’ for January 
last. 
A short time ago, when looking over the Report on the 
‘Challenger’ Copepoda, we happened to observe a certain 
resemblance between Dr. Brady’s Pseudothalestris and our 
Pseudowestwoodia ; a careful study of the two was then made, 
with the result that we believe them to be identical. It is 
unfortunate that Dr. Brady had only a single specimen (and 
a male) to describe from; had it been a female, the identity 
of the two genera would no doubt have been more clearly 
established. Though our name—Pseudowestwoodia—is more 
in accord with the general form of the British species of the 
genus, there can be no question as to the priority of Pseudo- 
thalestris. 
It is surely of much interest to find in this little group of 
Copepoda another instance of the remarkably close similarity 
between organisms living on opposite sides of the globe. 
