34 HOLOTHUKTOIDEA. 



Leptosvnapta girardii, Verr. Rep. Comm. Fish. U. S. 1871 & 1872 



(1873), part i. p. 716. 

 Leptosynapta roseola, id. ibid. ; Theel, Chall. Rep. Hoi. (1886) 



p. 25. 



Twelve tentacles, each with, six or seven digitate processes on 

 either side ; a single madreporic canal ; one to three Polian vesicles ; 

 edge of flnke of anchor serrated ; several of the anchor-plates with 

 serrated holes ; miliar y granules not largely developed. 



From 40 to 50 mm. long in spirit, hut always greatly disfigured 

 hy preservation in alcohol. 



Distribution. Both sides of North Atlantic ; White Sea and Medi- 

 terranean. 0-96 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. 

 /. Aberystwyth. Mus. Leach. 



g-h. Polperro, " gravel bottom." 



i. S. Devon. Mus. Leach. 



2. Synapta buski. (Plate I. fig. 2.) 



Synapta buskii, Mcintosh, Proc. Roy. Soc. Ed. v. (I860) p, 611, 



fig. 6. 

 Synapta tenera, Norman [n. n.], Rep. Brit. Assoc. 1863 (1864), 



p. 106; Brady $ Robertson, P. Z. S. 1871, p. 690, pi. lxxi. figs! 



1-3; Dan. Sf Kor. Norske Nordliavs Hoi. (1882) p. 80; Lampert, 



Seewalzen, (1885) p. 216 ; Theel, Chall, Rep. Hoi. (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-])! ates (see PI. I. fig. 2) with seven dentate 

 holes and long narrow handle. 



25 to 35 mm. long ; body transparent and faintly rosy when 

 fresh. 



Distribution. Apparently rare in British seas, but very common 

 on west coast of Sweden. 15-30 fms. 



a-d, Sound of Harris. Prof. Mcintosh. 



3. Synapta digitata. (Plate I. fig. 3 & Plate VII. figs. 1 & 2.) 



Holotmiria digitata, Montagu, Trans. Linn. Soc. xi. (1815) p. 22, 

 pi. iv.fig. 6; Grube, Arch. f. Anat. 1850, p. 115. 



Fistularia digitata, Lamk. An. s. Vert, iii. (1816) p. 76. 



Holothuria inhaerens, Delle Chiaje, Mem. An. s. Vert. iii. (1828) 

 p. 69. 



Miilleria digitata, Fleming, Hist. Brit. An. (1828) p. 484. 



Thyone digitata, de Bl. Actinol. (1834) p. 194. 



Ohirodota cliiajii, Grube, Actin. etc. Mittelm. (1840) p. 41; Delle 

 Chiaje, Invert. Sic. Cit. iv. (1841) p. 4. 



Chirodota digitata, Forbes, Brit. Star/. (1841) p. 239; Thompson, 



