218 ANNALS OF SCOTTISH NATURAL HISTORY 



NOTES ON SOME SCOTTISH MARINE ISOPODS. 



By THOMAS SCOTT, F.L.S., 

 Naturalist to the Fishery Board for Scotland. 



SEVERAL small marine Isopods have occasionally been 

 observed in gatherings of dredged and other material 

 collected during the past six or seven years, but the study 

 of them was for various reasons allowed to stand over. 

 The second volume of Professor G. O. Sars's valuable work 

 on the " Crustacea of Norway," though not yet completed, has 

 been of much assistance to me in the discrimination of these 

 small Isopods, and has permitted of the satisfactory identi- 

 fication of, at least, some of them. The following notes 

 have been prepared with the assistance of the work alluded 

 to, and include references to a few rare species already 

 recorded for Scotland, extending in some cases their distribu- 

 tion in the Scottish seas. A few others are referred to that 

 do not appear to have been previously recorded from any 

 locality in Scotland : one or two of these are also additions 

 to the British fauna. 



Changes in the nomenclature of some of the species already 

 recorded are also noticed. For details as to general distribu- 

 tion, etc., the reader is referred to Sars's work mentioned 

 above, as my notes have reference chiefly to Scotland. 



APSEUDES TALPA (Montagu}. 



This species is recorded by the late Dr. Robertson of Millport 

 as having been taken amongst the roots of Laminaria at the Tan, 

 Cumbrae, in seven fathoms ; l so far, this is the only Scottish record 

 for Montagu's species known to me. 



TANAIS TOMENTOSUS, Kroyer. 



This is the Tanais vittatus of Bate and Westwood's "British 

 Sessile-eyed Crustacea," and it has been recorded for the Clyde 

 under that name. Professor Sars has shown, however, that Kroyer's 

 name Tanais tomentosus was published in 1842, whereas Rathke's 

 Crossurus (Tanais] vittatus was not published till the following year. 



1 " Amphipoda and Isopoda of the Clyde," Second Part, p. 28. (Dr. 

 Robertson's catalogue is frequently referred to in these notes.) 



