136 Proceedings of the Royal Physical Society. 



Astacilla affinis, G. 0. Sars {Crustacea of Norivay^ 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.— DvQdigQdi off St Monans, 22nd May 1901 ; only 

 a single male specimen was obtained. 



ASELLOTA. 



Family Asellid^. 

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



21. Asellus aqaaticics (Linne). 



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

 1868. Asellus aquaticus, Bate and Westw., Brit. Sessile-ej'ed 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). Marchfield 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 J a N i R i D ^. 

 Genus (15) Janira, Leach, 1813 



22. Janira maculosa, Leach. 



1813. Janira maculosa, Leach, Edin. Eucycl. , 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. Jcera marina (0. Fabricius). 



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

 1813. Jcei-a albifrons, Leach, Edin. Encycl., vol. vii. p. 434. 



Habitat. — Coumion at May Island and Granton Quarry 



