THYONE. 41 
8. Cucumaria andrewsii. 
Pentactes andrewsii, Furran, Proc. Nat. Hist. Soc. Dublin, i. (1860)* 
p. 155. 
Thyone andrewsii, Ainahan, Nat. Hist. Rev. vi. (1859) p. 368 ; Lam- 
pert, Seewalzen, (1885) p. 164; Théel, Chall. Rep. Hol. 11886) 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 incerte vel inquirende. 
1. Hol. decollata, Leach, is a MSS. name, apud Gray, Brit. Rad. 
(1848) p. 11, a synonym of Cucumaria montagui, Fleming, and 
wrongly cited by Théel, Chall. Rep. 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. Soe. 1871, 
p-. 690. 
3. THYONE. 
Thyone, Oken, Lehrb. Naturg. iii. (1815) p. 551; Diib. § Kor. Vet.- 
Ak. Halg. 184 (1846), p. 808; Semper ree emend.); Hol. Phil. 
(1867) p. 64; Théel, Chall. Rep. Hol. (1885) p. 182 ; Ludwig, Klass. u. 
Ordn. (soi) p- 346. , 
Mulleria, Fleming, Brit. An. (1827) p. 484. 
Anaperus, Trosch. Arch. f. Nat. xii. i846) p . 60. 
Sclerodactyla, Ayres, Proc. Bost. Soc. Nat. Hist. iv. (1854) p. 6. 
Stereoderma, zd. tom. cit. p. 46. 
Pentamera, 7d. ¢. c. p. 207. 
Stolus, Selenka, Zeits. f. w. Zool. xvii, (1867) p ae 
Uroxia, Costa, Ann. Mus. Zool. Nap. v. (1869) p. 5 
Thyonella, Verrill, Amer. Journ. Set. iii. (1872) p. 437. 
Trachythyone, Studer, MB, Ak. 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. 
Key to the Species. 
1. Body not curved on itself ........ 1. 7. fusus. 
2. Body curved on itself ............ 2. T. raphanus. 
Spec. inquir. 
| PEEP co ee Soe ee 5. T. flexus. 
: Se er os Lee 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, 
= 
