SYNAPTA. 38° 
Key to the Species *. 
Tentacles with more than five digits ...... 1. S. inherens, 
Tentacles with five digits or less. 
Tentaclesieleyany s.6<c. accun cane aes 2. S. buski. 
Tentacles twellye.'.. os). a. We daee dane 3. S. digitata, 
1. Synapta inherens. (Plate I. fig. 1.) 
Holothuria inheerens, O. F. Miill. Prod. Zool. Dan. (1776) p. 232 ; 
id. Zool. Dan. i. (1779) p. 35, pl. xxxi. figs. 1-7 ; de Bl. Dict. Sev. 
Nat. xxi. (1821) p. 319. 
Pentacta inherens, Jéger, De Hol. (1833) p. 18. 
Cucumaria inherens, de Bl. Actin, (1834) p. 195; Kinahan, Nat. 
Hist. Rev. vi. (1859) p. 869. 
Dactylota inherens, Brandt, Prodr. Descr. Anim. (1835) p. 45. 
Chirodota pinnata, Grube, Actin, ete. Mittelm. (1840) p. 41. 
Synapta duverncea, Quatrefages, Ann. Sci. Nat. xvii. (1842) p. 19, 
pls. 2-5 [anatomy]; Held, Vierteljahrschr. naturf. Ges. in Ziirich, 
ii. (1857) p. 20, pl. il. fig. 1; Frédol | Moguin-Tandon |, Monde de 
la Mer, (1866) p. 258, pl. xiv. 
Holothuria (Synapta) inhierens, Rathke, Nov. Act. Leop, xx. (1845) 
. 136. 
Sanne inheerens, Diiben § Koren, Vet.-Ak. Handlg. 1844 (1846), 
"pp. 322, pl. v. figs. 56-62; J. Miiller, Arch. f. Anat. u. Physiol. 
1850, p. 186; Woodward § Barrett, P. Z. 8, 1858, p. 363, pl. xiv. 
fies. 18-22; Sars, Norg. Ech. (1861) p. 124; Selenka, Z. f. wiss. 
Zool. xvii. (1867) p. 364; Lankester, Q. J. Micr. Sct. viii. (1868) 
p- 53; Semper, Hol. Phil. (1868); Norman, Rep, Brit. Assoc. 
1868 (1869), p. 318; Jarzynsky, Trans. Petersb. Soc. Nat. i. 
(1870) p. 319; Leshe § Herdman, Proc. R. Phys. Soc. vi. (1881) 
p. 95; Graeffe, Arb. Inst. Wien, iii. (1881) p. 842; Dan. §& Kor. 
Norske Nordhavs Holoth. 1882, p. 80; Barrois, Cat. Crust. (1882) 
p. 55; Carus, Prod. Faun. Med. (1884) p. 111; Lampert, Seewalzen, 
(1885) p. 217; Théel, Chall. Rep. Hol. (1886) p. 24; Bell, Proc. 
Rh. Irish Ac. iv. (1886) p. 621. 
Synapta inherens, Gray, brit, Rad. (1848) p. 12. 
Synapta henslowana, ed. bid. 
Synapta girardii, Powrt. Proc. Amer. Assoc, 1851, p. 14. 
Synapta pellucida, Stimpson § Kiirtz, apud Ayres, Proc. Bost. Soc, 
N, H. iv. (1852) p. 214. 
Synapta tenuis (not Quoy § Gaimard), Ayres, Proc. Bost. Soc. N. 
H, iv. (1854) pp. 11, 67, 148; Agas. Sea-side Studies, (1865) p. 95, 
fig. 124; Verr. Proc. Bost. Soc, N. H. x. (1864) pp. 342, 354. 
Cucumaria inherens, Thompson, Nat. Hist. Irel. iv. (1856) p. 448. 
Synapta galliennii vel saruiensis, Herapath, Q. J. M.S. v. (1865) 
p. 9, pl. i. figs. 4-7. 
Synapta ayresii, Selenka, Z. f, wiss. Zool. xvii. (1867) p. 362. 
Synapta sarniensis, Lankester, Q. J. M. S. viii. (1868) p. O32, 
Leptosynapta inherens, Verr, Trans. Connect. Acad. i. “1867” 
(1871), p. 325. 
Leptosynapta tenuis, zd. aid. 
* This and the following keys refer to British species ouly, and are there- 
fore generally based on characters arbitrarily selected. 
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