q/ the Fisherji Board for ^kotland. 451 



This is the first time the species has beeen observed on the east coast, 

 but on the west coast it lias been taken in Loch Fyne and in the Sound 

 of Mull ; it appears to be a very scarce species. Prof. G. O. Sars informs 

 me in lit. tliat this species has long ago been found by him off the 

 Norwegian coast, and that, though the female resembles somewhat the 

 female of Steplins gyraiis, Giesbrecht, the male (which I have not seen) 

 differs very considerably from the male of the ' form described by that 

 author. He also informs me that the name he proposes for this species is 

 Steplms scotti, a full description of which will be found in vol iv of his 

 work on the Crustacea of Norway, now in course of publication. 



Pseudoeydopia caudata, T. Scott. 



1894. rseudocydopia caudata, T. Scott, 12th Ann. Kept. 

 Fishery Board for Scot, pt. iii., p. 236, pi. v., figs. 1-8. 

 This is a smaller and rarer species than Pseudoeydopia crassicornis ; 

 it has been taken in the Firth of Clyde as well as in the Firth of Forth, 

 and I now record its occurrence in the deep water (60 fathoms) about 10 

 miles off Aberdeen, where it was collected on July 30th, 1901. In this 

 species the caudal furca are distinctly more elongate than in the other 

 described species. 



jEtidius armatus, Brady. 



The female specimen of a copepod which I regard as identical with 

 the species described by Dr. Brady under the above name in his Report 

 on the Challenger Copepoda, occurred in a niid-water tow-net gathering 

 collected off the east side of the Shetland Islands on May 22nd, 1901. 

 Professor Sars, in his new work on the Copepoda of Norway, remarks that 

 the Psendocakmus armatus of Boeck is probably identical with the 

 ^Etidius armatus described by Professor G. S. Brady, and if so, the 

 name of the species would stand as jEtidus armatus (Boeck). 



Bradyidius armatus (Vanhoffen). 



1878. Pseudocalanus armatus, Brady (not Boeck), Brit. Copep., 



vol. i., p. 46, pi. iv., figs. 1-11. 

 1899. Bradyidius arviattis (VRnholfen). Vide Das Tierreich, 

 p. 32. 

 C?) 1884. Undinopsis Bradyi, G. 0. Sars, in Sp. Schneider's Kept, 

 of Invertebrata from the Kvsenangen Fjord. 

 A set of drawings showing the structural differences between the male 

 and female of this species, with descriptive notes, was published in the 

 14th Annual Report of the Fishery Board for Scotland. It is a species 

 that is of frequent occurrence in the Clyde, where it was first obtained 

 by Dr. Brady many j^ears ago, and it is also found on other parts of the 

 Scottish coasts — its distribution extending to the north of the Shetland 

 Islands, where it was collected on the 17th of May of the present year 

 (1901). Undinopsis Bradyi, G. O. Sars, may be identical with this 

 species, but it diff^ers somewhat in the structure of the fifth thoracic feet 

 of the male. 



Scolecithrix hihernica, A. Scott. 



1896. Scolecithrix hihernica, A. Scott, Ann. and Mag. Nat. 



Hist., (6), vol. 18, p. 362, pi. xvii., figs. 1-9 ; pi. xviii., 



figs. 1-9. 



This species was obtained in Loch Etive in about 60 fathoms on 



September 17th, 1901 ; Loch Etive is a new station for this Scolecithrix, 



