219 NOTES ON SOME SCOTTISH MARINE ISOPODS 



I found Tanais tomentosus more or less common amongst living 

 and dead barnacles on rocks, near low water, at the mouth of East 

 Loch Tarbert, Loch Fyne, in 1886. Dr. Robertson obtained the 

 same species on the wood piles of Millport pier, and on rocks, near 

 low water, Cumbrae. 



Paratanais Batei, G. O. Sars. 



According to Professor Sars, the Paratanais forcipatus of Spence 

 Bate is not Lilljeborg's species of that name, but is one previously 

 undescribed ; and as it was therefore necessary to rechristen the 

 species, he has named it as above. Thomas Edward is said to 

 have obtained Paratanais Batei at Banff, and Dr. Robertson records 

 its occurrence at Cumbrae between tide-marks. I have it from 

 Whiting Bay, Arran, where it was collected in November 1895, 

 and from Tarbert Bank, Loch Fyne, collected in May 1896. The 

 Firth of Forth has also now to be added to the list of Scottish 

 localities for this Isopod — a specimen having been obtained amongst 

 a lot of other Tanaida; collected off North Berwick in December 

 1892. It is quite possible there may be some confusion among 

 previous records of Paratanais Batei, and that both it and Lillje- 

 borg's species may have been included under Spence Bate's name 

 of Paratanais forcipatus. There is, however, one very obvious 

 difference between these two Isopods — Paratanais Batei has small 

 but conspicuous black eyes, that are quite distinct even in specimens 

 that have been some years in spirit ; in the other species the eyes 

 appear to be altogether wanting, at any rate they are not percept- 

 ible in specimens that have been preserved in spirit. The form of 

 the chela in these two Isopods is also very different. 



Leptognathia Lilljeborgi, Stebbing. 



This species was described and figured in the " Annals and 

 Magazine of Natural History" for October 1891 by the Rev. 

 T. R. R. Stebbing, from specimens obtained in the sands at Lee 

 and Woolacomb, North Devon, in August 1890. A number of 

 specimens of what is undoubtedly the same species have been 

 taken in the Firth of Forth at various times, and the species seems 

 to be generally distributed in that estuary. In May 189 1 it was 

 obtained both in Largo Bay and off Musselburgh. It occurred off 

 North Berwick in December 1892, and off Aberdour in November 

 1893 ; but I have no special records of it since that time. Leptog- 

 nathia Lilljeborgi appears to be somewhat out of place among the 

 species of that genus described by Sars : these all have the " superior 

 antennas in the female distinctly 4-articulate," whereas in this one 

 the fourth joint is described as "quite rudimentary." In the 

 specimens from the Firth of Forth I have been unable to satisfac- 



