34 HOLOTHURIOIDEA. 
Leptosynapta girardii, Verr. Rep. Comm. Fish. U. S. 1871 & 1872 
(1873), part i. p. 716. 
Leptosynapta roseola, 2d. tbid.; Théel, Chall. Rep. Hol. (1886) 
p. 25. 
Twelve tentacles, cach with six or seven digitate processes on 
either side ; a single madreporic canal ; one to three Polian vesicles ; 
edge of fluke of anchor serrated ; several of the anchor-piates with 
serrated holes; miliary granules not largely developed. 
From 40 to 50 mm. long in spirit, but always greatly disfigured 
by preservation in alcohol. 
Distribution. Both sides of North Atlantic ; White Sea and Medi- 
terranean. O—96 fms, 
a-c. 49° 7'N., 10° 57’ W., 96 fms. ‘ Porcupine ’ Exp. 1869 (St. 35). 
d. Cumbrae, 25 fms. J. Murray, Esq. 
e. West coast of Scotland. J. Murray, Esq. 
Sf. Aberystwyth. Mus. Leach. 
g-h. Polperro, ‘ gravel bottom.” 
2. 8. Devon, Mus. Leach. 
2. Synapta buski. (Plate I. fig. 2. 
Synapta buskii, McIntosh, Proc. Roy. Soc. Ed. y. (1866) p. 611, 
fig. 6. 
Synapta tenera, Norman [n. n.], Rep. Brit. Assoc, 1863 (1864), 
p- 106; Brady § Robertson, P. Z S. 1871, p. 690, pl. lxxi, figs. 
1-8; Dan. & Kor. Norske Nordhavs Hol. (1882) p. 80; Lampert, 
Seewalzen, (1885) p. 216; Théel, Chall. Rep. Hol. (1886) p. 30. 
Eleven tentacles, with three true digits and two or three trans- 
verse ridges which look like digits; a single madreporic canal; one 
Polian vesicle. Anchor-plates (see Pl. I. fig. 2) with seven dentate 
holes and long narrow handle. 
25 to 35mm. long; body transparent and faintly rosy when 
fresh. 
Distribution. Apparently rare in British seas, but very common 
on west coast of Sweden. 15-30 fins. 
a—d. Sound of Harris. Prof. MeIntosh. 
3. Synapta digitata. (Plate I. fig. 3 & Plate VI. figs. 1 & 2.) 
Holothuria digitata, Montagu, Trans. Linn, Soc. xi. (1815) p. 22, 
pl. iv. fig. 6; Grube, Arch. f. Anat. 1850, p. 115. 
Fistularia digitata, Lamk, An. s. Vert, iii. (1816) p. 76. 
Holothuria inherens, Delle Chiaje, Mem. An. s. Vert. iii. (1828) 
. 69. 
Milleria digitata, Fleming, Hist. Brit. An. (1828) p. 484. 
Thyone digitata, de Ll. Actinol, (1884) p. 194. 
Chirodota chiajii, Grube, Actin. etc. Mittelm. (1840) p. 41; Delle 
Chiaje, Invert, Sie. Cit. iv. (1841) p. 4. 
Chirodota digitata, Forbes, Brit. Starf. (1841) p. 289; Thompson, 
