225 NOTES ON SOME SCOTTISH MARINE ISOPODS 



Plerogonium spinosissimum, G. O. Sars. 



Dr. Robertson records this species also from the Clyde, having 

 obtained it in the same locality with the other. This appears to be 

 the only Scottish record of the species hitherto. Though no specimens 

 of Pleurogonium spinosissimum have yet been observed during our 

 researches round the coasts of Scotland, I have had the opportunity 

 of examining specimens from other places. The extremities of the 

 body segments are remarkably angular in P. spinosissimum. In all 

 the three species the body is comparatively broad and considerably 

 depressed, and as the legs are slender and easily broken perfect 

 specimens are hardly obtainable. 



PSEUDARACHNA HIRSUTA, G. O. Sars. 



This is another of the curious Isopod species that have been 

 discovered by Professor Sars. A single specimen of a Crustacean 

 apparently belonging to this species was obtained in a small 

 gathering collected by F. G. Pearcey in the Moray Firth in June 

 last ; it was taken on a muddy bottom, in about 40 fathoms, north- 

 east of Lossiemouth. In this species the forehead is broadly 

 rounded and is sparsely fringed with short hairs. 



Eurycope (?) phalangium, G. 0. Sars. 



In my " Fishes and Invertebrates of Loch Fyne," published last 

 year, I record Eurycope phalangium. I have now obtained what 

 appears to be the same species in a gathering of micro-crustacea from 

 the Firth of Forth collected in 1895 : it appears to be a rare species. 



There are still one or two other small Isopods to record, 

 but they require further study and will have to stand over 

 for a short time. 



