CUCUMAEIA. 35 



Nat. Hist. Irel. iv. (1856) p. 443; Kinahan, Nat. Hist. Rev. vi. 

 (1859) p. 369. 

 Synapta digitata, J. Miiller, Arch. f. Anat. 1850, p. 136 ; id. JJeber 

 Svnapta digitata, cy-e. 1852 ; id. Arch. f. Anat. 1852, p. 1 ; Leydir/, 

 t.e. p. 507, pi. xiii. figs. 4-11 ; W. Berlin, op. cit. 1853, p. 442 ; 

 Held, Vierteljahrschr. naturf. Ges. in Zurich, ii. (1857) p. 258, 

 pi. ii. fig- 2; Woodward $ Barrett, P. Z. S. 1858, p. 361, pi. xiv. ; 

 Sars, Midd. Litt. Fauna, 1857, p. 88 ; Baur, Nov. Act. A. C. L. 

 xxxi. (1864) i. & ii. pis. i.-v. ; Selenka, Zeitschr.f. wiss. Zool. xvii. 

 (1867) p. 364 ; Semper, Hoi Phil. (1868) p. 264 ; Norman, Pep. 

 Brit. Assoc. 1868 (1869), p. 318; Fischer, Act. Soc. Linn. Bor- 

 deaux, xxvii. (1869) p. 374; Gracffe, Arb. Inst. Wien, iii. (1881) 

 p. 342; Cams, Prod. Faun. Med. (1884) p. Ill; Lampert, See- 

 wahen, (1885) p. 224 ; Theel, Chall. Pep. Hoi. (1886) p. 29 ; Semon, 

 Jen. Zeitschr. xxii. (1888) p. 175 (development). 



Twelve tentacles, each with four or five digitate processes on either 

 side ; a single madreporic canal and Polian vesicle. Fluke of anchor 

 smooth or slightly serrated ; the holes of the anchor-plates smooth 

 or with fainter serrations than in S. inhcerens ; miliary granules 

 numerous and in places crowded. 



From 30 to 40 mm. in spirit, which always injures these animals. 



Distribution. British, French, Spanish coasts and Mediterranean ; 

 east coast of Xorth America. 10-20 fms. 



a-e. Polperro. 



f,y. South Devon and Cornwall. Mus. Leach. 



2. CUCUMAMA. 



Cucumaria, de Bl. Diet. Sci. Nat. lx. (1830) p. 173; id. Actin. (1834) 

 pp. 191 & 195 (pars) ; Forbes, Brit. Star/. (1841) p. 209 ; Dub. $ 

 Kor. Vet.-Akad. Hdly. 1844 (1846), p. 293; Duj. $ Hup. Fchin. 

 (1862) p. 621 ; Selenka, Zeitschr. wiss. Zool. xvii. (1867) p. 346 ; 

 Semper, Hoi. Phil. (1867) p. 47 ; Verrill, Trans. Conn. Acad. i. 

 (1867[71]) p. 321 ; Cams, Prodi: Faun. Med. (1884) p. 107 ; Lampert, 

 Seewalzen, (1885) p. 17 ; Theel, Chall. Rep. Hoi. (1886) p. 99; Bell, 

 Ann. Sf Mag. viii. (1891) p. 406; Ludvrig, Klass. u. Ordn. (1891) 

 p. 344. 



Pentacta, Jciger, De Hoi. (1833) p. 11 (non Goldfuss) (pars) ; Verrill, 

 Trans. Connect. Acad. i. (1867[71]) p. 321. 



Cladodactyla, Brandt, Prodi: descr. (1835) p. 43. 



? Psolinus, Forbes, Brit. Starf. (1841) p. 207. 



Ocnus, Forbes § Goodsir, op. cit. p. 229; Semper, Hoi. (1867) p. 54; 

 Cams, Prodi: Faun. Med. (1884) p. 109 ; Lampert, Seewalz. (1885) 

 p. 17 ; Theel, Chall. Rep. Hoi. (1886) p. 117. 



Botryodactyla, Ay res, Proc. Bost. Soc. Nat. Hist. iv. (1854) p. 52. 



Ecliinocucumis, Sars, Forh. T'id. Selsk. Christiania, 1858 (1859), p. 176 ; 

 id. Norg. Ech. (1861) p. 102. 



Pentactelia, Verrill, Bull. U.S. Nat. Mus. no. 3 (1876), p. 68. 



Semperia, Lampert, Seewalz. (1885) p. 150. 



A dendrochirotous form with ten tentacles, of which two are 

 ordinarily smaller than the rest, in which the podia are set in rows 



d2 



