Canon A. M. Norman o/t liritisli Ainji/iij>oili(. IHO 



1)1' tliut speciofl, inastnncli as these peculiar spines are not to 

 be seen on tlie laif^^e fi;,Mire.s lie ^ive.s t)t'tlie jieneopods. 



H<ih. l^antry, Ireland {A. M. N.) ; 'I'orhay and HanlV 

 (StehhiiK/) : Mas. Nor. Jersey and 8ark {iSinel and Hornel) ; 

 Isle ot'Cumhrae (/>>. /?.). 



Ihstrilt. Soutli and West Norway (Sars) ; Western France 

 and Algiers (Chevreux). 



Genus 3. Ohchestia, Leach. 



13. Oichestia Uttorca (Montagu). 



1861. Orchestia littvrea, Bate .t AVestwood, (1) vol. i. p. 27. 



1869. Orchestia hreridujitata, IJate & Westwood, (1) vol. ii. j). 407 (see 



Bnrrois, ' Note sur quelqiies points de 1ft Morpliologie des 



Orchesties,' Lille, 1887, p. l.'J). 

 1890. Orchestia littorea, i?ars, (142) p. 24, pi. x. 



It is also TiiJitrus tn'pudians ot" Krciyer and Orchestia 

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

 reUus of IIerb.<t, but that author's figure certainly does not 

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

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

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



Hab. Diffused in suitable localities round our coasts. Like 

 Talitrus 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. 



Jh'strib. On the West Norwegian coast as far north as the 

 Trondhjcm Fiord {Sars), thence southward throughout the 

 Atlantic coasts of Europe to the Mediterranean and Black 

 Sea {Cserriiavski/) ; Madeira (Morelet) ; Azores (Barrois). 



14. Orchestia mediterranean A. Costa. 



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



1893. Orchestia chilengis, Dalla Aalle, (139) p. 498, pi. ii. fig. 8 and 

 pi. XV. tigs. 31-38. 



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

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



I lab. 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 {A. M. N.): 

 Mus. Nor. Topsham and Exmouth Warren (I'arjiit) ; be- 

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



Distrib. Adriatic {Prof. Jleller) ; Naples {Delia Valle) : 

 Mus. Nor. West France {Chevreua:). 



Genus -4. OUCHESTOIDEA, Nicolet. 



15. Orche!>toidea J hshai/esii {Ani\ou\n). 



1861. Orchestia Deshayesii, Bale A Westwood, (1) vol. i. p. 36. 

 1887. Orchestia Deshai/esii, Th. Bairoii;, Note sur quelques points de 

 la .M orpin l-.^'ic do- Orcli' sties, Lille, p. (>, figs. 1 13. 



