Canon A. M. Norman on British Amphipoda. 130 



1)6 that species, inasmucli as these peculiar spines are not to 

 be seen on the large figures he gives of the peraiopods. 



Hah. Eantry, Ireland {A. J/. N.) ; Torbay and Banff 

 (Siebhing) : Mus. No7\ Jersey and Sark (^Sinel and HorneT) ; 

 Jsle of Cunibrae {D. R). 



Distrih. South and West Norway {Sars) ; Western Franco 

 and Algiers (Chevreux). 



Genus 3. Oechestia, Leach. 



13. Orchestia littorea (Montagu). 



1861. Orchestia littorea, Bate & Westwood, (1) vol. i. p. 27. 



1869. Orchestia hrevidigitata, Bate & Westwood, (1) vol. ii. p. 497 (see 



Barrois, ' Note sur quelques points de la Morphologie des 



Orchesties,' Lille, 1887, p. 13). 

 1890. Orchestia littorea, Sars, (142) p. 24, pi. x. 



It is also Tnlitrus tripudians of Kroyer and Orchestia 

 euchore of F. Miiller. B. & W. refer it to Cancer gama- 

 rellus of Herbst, but that author's figure certainly does not 

 agree, and is in fact more like 0. mediterranea. The de- 

 scription of Oniscus gammarellus in Pallas's ' Spicilegia,' 

 moreover, cannot, I think, be reconciled with this species. 



Hah. Diffused in suitable localities round our coasts. Like 

 TaJitrus it is found beneath decaying seaweed, but In this 

 case only when the seaweed is lying on pebbles, or pebbles and 

 sand, and it is not found in pure sand, which is the habitat 

 of Talitrus. 



])isti-ib. On the West Norwegian coast as far north as the 

 Trondhjem Fiord {Sars), thence southward throughout the 

 Athmtic coasts of Europe to the Mediterranean and Black 

 Sea [Czermavsl-t/) ; Madeira (Morelet) ', Azores (^Barrois). 



14. Orchestia mediterranea, A. Costa, 



1861. Orchestia mediterranea, Bate & Westwood, (1) vol. i. p. 31. 



1893. Orchestia chilensis, Dalla Valle, (139) p. 498, pi. ii. fig. 8 aud 

 pi. XV. tigs. 31-38. 



1899. Orchestia mediterranea, T. Scott, Rep. Fishery Board of Scot- 

 land, p. 264, pi. xiii. tigs. 9-11. 



Ilab. As yet there is no record of this species occurring on the 

 eastern shores of our islands, nor further north than the Firth of 

 Clyde on the west. Weymouth and Inverary (4, M. N.) : 

 Mus. Nor. Topsham and Exmouth Warren (Farjitt) ; be- 

 tween Fairlie and Ilunterston, Firth of Clyde (T. Scott). 



Distrih. Adriatic {Prof. Heller); Naples {Bella Valle): 

 Mus. Nor. West France [Chevreux). 



Genus 4, Oechestoidea, Nicolet. 



15. Orchestoidea Besha i/es ii {Andou'm). 



1861. Orchestia Deshayesii, Bate & Westwood. (1) vol. i. p. 36. 

 1887. Orchestia Deshayesii, Th. Barrois, Note sur quelques points de 

 la Morphologie des Orchesties, Lille, p. 6, tigs. 1-13. 



