136 Proceedings of the Royal Physical Society. 



Astacilla affinis, G. 0. Sars (Crustacea of JSTorivay, vol. ii. 

 p. 90). 



Genus (13) Arcturella, G. 0. Sars, 1897. 



20. Arcturella dilatata, G. 0. Sars. 



1882. Astacilla dilatata, G. 0. Sars, Overs, af Norges Crust., vol. i. 

 p. 63, pi. ii. fig. 3. 



Habitat. — Dredged off St Monans, 22nd May 1901 ; only 

 a single male specimen was obtained. 



ASELLOTA. 



Family Asellida 

 Genus (14) Asellus, G. St Hillaire, 1764. 



21. Asellus aquaticus (Linne). 



1761. Oniscus aquaticus, Linn., Fauna Suecica, 2nd ed. , p. 500. 

 1868. Asellus aquaticus, Bate and Westw., Brit. Sessile-eyed Crust., 

 vol. ii. p. 343. 



Habitat. — Pond at Eedbraes, near Edinburgh, " in remark- 

 able profusion " (Sir J. Dalyell). Very common in Union 

 Canal, near Gilmore Place, Edinburgh (1889-90) ; Dudding- 

 ston Loch (1897). Marchrield Pond, very common (Dr and 

 Miss Sprague, July 1900). Braid Burn ; Peffer Burn, near 

 Aberlady, etc. (W. Evans). Upper Elf Loch, Braid Hills, 

 common in 1905 (W. Evans). 



• Family Janirida. 

 Genus (15) Janira, Leach, 1813 



22. Janira maculosa, Leach. 



1813. Janira maculosa, Leach, Edin. Encycl., vol. vii. p. 434. 



Habitat. — Firth of Forth, off Bo'ness, 1887. Taken at 

 Station IX. in April 1870, and subsequently at other 

 stations, but always very sparingly. 



Genus (16) Jsera, Leach, 1813. 



23. Jasra marina (O. Fabricius). 



1780. Oniscus marinus, Fabr., Fauna Gronlandica, p. 252. 

 1813. Jcera albifrons, Leach, Edin. Encycl., vol. vii. p. 434. 



Habitat. — Common at May Island and Granton Quarry 



