THTONE. 41 



8. Cucumaria andrewsii. 



Pentactes andrewsii, Farran, Proc. Nat. Hist. Soc. Dublin,].. (I860)* 

 p. 155. 



Throne andrewsii, Kinahan, Nat. Hist. Rev. vi. (1859) p. 368 ; Lam- 

 pert, Seeivalzen, (1885) p. 104 ; Theel,Chall. Rep. Hoi. (1886) p. 141. 



Nothing can be said about this species except that it is certainly 

 a Cucumaria ; a leading ground for regarding it as new was the 

 canary colour of the tentacles. 



It was taken at Clonea, co. Waterford, and was found intertwined 

 among the roots of Laminaria digitata. 



Species incertce vel inquirendce. 



1. Hoi. decollata, Leach, is a MSS. name, apud Gray, Brit. Had. 

 (1848) p. 11, a synonym of Cucumaria montagui, Fleming, and 

 wrongly cited by Theel, Chall. Eep. 1886, p. 116. 



2. Cucumaria neillii, Fleming, Brit. An. (1828) p. 483. 



3. Cucumaria dissimilis, id. loc. cit. 



4. Cucumaria saxicola, Brady & Robertson, Proc. Zool. Soc. 1871, 

 p. 690. 



3. THYONE. 



Thyone, Oken, Lehrb. Naturg. iii. (1815) p. 351 ; Bub. # Kor. Vet.- 

 Ah. Hdlg. 1844 (1846), p. 308; Semper (sens, emend.), Hoi. Phil. 

 ( 1867) p. 64 ; Theel, Chall. Rep. Hoi. (1885) p. 132 ; Ludwig, Klass. u. 

 Ordn. (1891) p. 346. 



Mulleria, Fleming, Brit. An. (1827) p. 484. 



Anaperus, Trosch. Arch.f. Nat. xii. (1846) p. 60. 



Sclerodactyla, Ay res, Proc. Bost. Soc. Nat. Hist. iv. (1854) p. 6. 



Stereoderma, id. torn. cit. p. 46. 



Pentamera, id. t. c. p. 207. 



Stolus, Selenka, Zeits.f. w. Zool. xvii. (1807) p. 355. 



Uroxia, Costa, Ann. Mus. Zool. Nap. v. (1869) p. 57. 



Thyonella, Verrill, Amer. Journ. Set. iii. (1872) p. 437. 



Trachythyone, Studer, MB. Ah. Berl. 1876, p. 453. 



A dendrochirotous form with ten tentacles, of which the two 

 ventral are smaller than the other eight, the podia numerous and 

 scattered, rarely exhibiting any arrangement in rows ; the anus is 

 often armed with five calcareous teeth. 



Keg to the Species. 



1. Body not curved on itself 1. T.fustis. 



2. Body curved on itself 2. T. raphanus. 



Spec, inquiv. 



3 3. T.Jlexus. 



4 , . . 4. T. elegans. 



* The communication of Farran bears date Nov. 21st, 1852, and a notice was 

 published in some newspaper — not, however, as Kinahan states, ' in Saunders's 

 Newsletter' for February 1852; I have vainly searched journals about that 

 date. 



