PHTLLOPnoErs. 47 



Body elongated, constricted at either end, with a thin, almost 

 transparent wall : the five longitudinal muscular bands quite appa- 

 rent. Twenty tentacles, arranged in pairs, alternately smaller and 

 larger. Very little order in the disposition of the podia, which are 

 small and by no means closely packed. Tables generally distributed 

 in the body-wall, but not numerous ; characterized chiefly by the 

 teeth at the top of the spire. 



Colour pale brown in spirit. 



Two to four inches long, and nearly half as wide in the middle 

 of the body. 



Distribution. Both sides of Atlantic, as far south as British Isles 

 and Florida Beef ; Arctic Ocean (White Sea). 5-70 f ms. 



a. The Minch. J. Gwyn Jeffreys, Esq. 



b-d. Firth of Lorn, 60-70 fms. J. Murray, Esq. 



2. Phyllophorus drummondi. (Plate V. fig. 4 & Plate VII. fig. 4.) 



Holothuria drunimondii, Thompson, Ann. fy Mar/, v. (1840) p. 100. 

 PCucumaria communis, Forbes, Brit. Star/. (1841) p. 217. 

 Cucumaria drumuiondii, id. t. c. p. 223 ; Thompson, Nat. Hist. Irel. 



iv. (1856) p. 443. 

 Thyone portlockii, id. t. c. p. 238. 

 ? Holothuria fusus, Oersted, Be reg. mar. (1844) p. 74 (fide Dub. Sf 



Kor.). 

 Thyonidium commune, Dub. fy Kor. Vet.-Akad. Hdlg. 1844 (1846), 



p. 305, pi. iv. figs. 18-23, pi. xi. tig. 51 ; Lampert, Seewalzen, (1885) 



p. 170. 

 Thyronidium drummondi, Gray, Brit. Bad. (1848) p. 11. 

 Thyonidium drummondi, Sars, Norg. Ech. (1861) p. 110; Theel, 



Chall. Bep. Hoi. (1880) p. 143. 

 Phyllophorus drumuiondii, Lvdwig, Klass. u. Ordn. (1891) p. 347. 

 ? Thyonidium dubeni, Norman, Bep. Brit. Assoc. 1868 (1869), p. 317. 

 Semperia drummondii, Hcrouard, Arch. Zool. exper. vii. (1889) 



p. 683. 



Body elongated, tapering sometimes slightly posteriorly ; wall, in 

 spirit, somewhat wrinkled, sometimes marked by longitudinal 

 grooves, much thicker than in P. pellucidus. Tentacles somewhat 

 irregular in disposition, the smaller not always arranged in pairs, 

 all of a deep violet colour. The podia more numerous than in 

 P. pellucidus, best developed on the ventral surface, pretty regularly 

 disposed aloug the ambulacra. 



Colour of body creamy or white. 



May be more than five inches long, but is not nearly as broad in 

 the middle as P. pellucidus. 



Distribution. East side of North Atlantic from British Channel to 

 Norway. To 80 fms. 



a, b. Off Ken-era, 20 fms. J. Murray, Esq. 



c. Firth of Lorn, 70-80 fms. J. Murray, Esq. 



d, e. Cornwall. 



