332 Canon A. M. Noiraan on 



8. Sphyrapus tudes, Norman & Stebbing. 



1886. Sphyrapus iudes, Norman & Stebbing, (86) p. 99, pi. xxii. fig. 1. 



Ilah. ' Porcupine,' 1869, Stat. 23 a, lat. 56° 13' N., long. 

 14° 18' W., to the south of Rockall, in 420 fath. 



Fam. II. Tanaidae. 

 Genus 1. Tanais, M. -Edwards. 



9. Tanais Cavolinit, H. M.-Ed\vard:<. 



1828. Tanais CavoUnii, II. Milne-Edwards in Audouin & Milne- 

 Edwavds's Pri^cis d'Entoniologie, vol. i. pi. xxix. fig. 1. 



1840. Tanais CavoUnii, H. Milne-Eewards, Hist. Nat. des Crust, 

 vol. iii. p. 141, pi. xxxi. fig. G. 



1842. Tanais totnentosus, Krover, (52) p. 183, and Voyage en Scan- 

 dinavie &c. (1849 ?) pi. xxvii. figs. 2a-q. 



1843. Cross7iriis vitfatits, Rathke, (89) p. 39, pi. i. figs. 1-7. 

 1866, Ta7iais viitatus, Bate & Westwood, (1) vol. ii.' p. 125. 



1875. Tanais viftatits, Macdonald, Trans. Linn. Soc. ser. 2, vol. i. 



(Zoologv) p. ()7, pi. x\. 

 1881. Taium riiiatvs, Harger, (37) p. 418, pi. xiii. figs. 81, 82, 



1896. Tanais fomenfosus, G. O. Savs, (105) p. 12, pi. v. 



1897. Tanais CavoUnii, A. Dollfus, (25) p. 207. 



1898. Tanais CavoUnii, A. Dollfus, (26) p. 35. 



Hah. Tide-marks among weeds, Farland Point, Cumbrae, 

 N.B., and Tobermory in the Isle of Mull {A. M. N.) ; May 

 Island, Firth of Forth, and Dunbar {Henderson). Bate & 

 Westwood record it from Berwick {Dr. Johnston) and Pol- 

 perro, Cornwall {Laughrin) ; Jersey {Koehler) ; Netley 

 Hospital Pier and Alum Bay, Isle of Wight {Macdonald). 



Histrih. It is found on the coast of Norway {Bathke &c.) ; 

 Oresund {Kroner); West France {C/ievreux); Mediterranean, 

 in many places {Chevreux, fide Dollfus) ; Azores {Th. Bar- 

 rels) ; Greenland {Hansen) . 



III. A. Dollfus has described several closely allied species 

 from the Mediterranean — one wnth the uropods three-jointed, 

 which is the species of whicli the above are synonyms, tlie 

 true T. Covohmi oi' Milne-Edwards; and three others which 

 agree in having the uropods four-jointed and differ from each 

 other in slight particulars. It is ])robable that tlie form 

 which Prof. G. O. Sars has described in Ins memoir on the 

 Mediterranean Isopoda Clielifera (103, pi. ix. figs. 1-3) is 

 referable to T. Chevreuxi^ A. Dollfus. It differs from 

 T. Cavoh'nn ( = T. vittatus) in having the body more slender 

 and the uropods four-jointed. 



This species may hereafter be found on our soutliern 

 coasts, and it is possible that the " very slender form " which 



