ACTINOl'OlMjrS IIOLOTHUUIOIDEA. 77 



united to this species, but the puhhshed ueeuuiit ol' that form is 

 very meagre. 1 also think tluit nW the tonus nu'utioned are 

 closely related to //. monacarla Lesson. In fact, there is very 

 little to distinguisli tliein from the latter species : the only 

 points seem to be that the stone-canal is attaclied in //. dlf- 

 ficilis (or at least in 11. caplioa), while it is not in II. monacaria, 

 and that in the Atlantic where //. capllca is found, //. monacaria 

 h&s not been found. 



Lucalltu : — Miinritius (H.v.\CKE 'SO, LuDWiG '83) ; Aiiihuiii;i, (FjUdwig '88) ; 

 Pnlo Etlam (Ludwig '88) ; Bay of Batavia (Bluitek '89) ; N. poiut of Tinr 

 I. (Sluitek : 01) ; Botuma (BedF01!D '98) ; Samoa (SEiiPEri '(37 — '68) ; For- 

 mosa ; Ogasawara Is. ; Osumi (?) 



I append here the references to //. capllca and II. farcimen 

 with their distribution. 



llololhuria capliva Ludwig 1874, p. 32, Fig. 45.— Ludwig 1883, p. 173. 

 — KYMPEnT 1885, p. 68.— Theel I8860, p. 220.— HEiLntra 1888, p. 311, PI. 

 XIV., fig. 4, 4rt.— Ludwk; 1889 -'92, p. 329.— Sluitei; 1895, p. 79.— Cl.u;k 

 1898 p. 413.— C'LAiiK 1899, pp. 125, 133.— Cl.uuv 1901^, p. 257. 



Localittj : — Barbados (Ludwig '74, Sluitek '95) ; Sine patria (Ludwig 

 '74, Lampeet '85) ; Bartholomew (Theel '86) ; Bermuda (Heilpein '88, 

 Cl^vek '98) ; Porto Eico (Clark : 01). 



Hololhuria farcimen Selenka 1807, ]>. 330, Taf. XVIIL, Fig. 65. — • 

 Sempeii 1867— '68, pp. 92, 279.— L.-vju'EKT 1885, p. 68.— Tueel 1886a, p. 

 220.— Ludwig 1889— '92, p. 329.— PEiaaEK : 00, p. 299. 



Localittj : — Azores (Sfj.enka '67). 



21. llolothiivia ednlis Lesson. 



llohtlmria cdulis Lesson 1830, pp. 125-6, Taf. XLN'L, Fig. 2. — Selenka 

 1867, p. 341.— Sempep. 1867— '68, pp. 89, 278, Taf. XXXI., Fig. 7, Taf. 

 XXXII., Fig. 4, Taf. XXXIIL, Fig. 3, Taf. XXXVI., Fig. 2, 5, 9, 10.— 

 Semper 1869, p. 120.— Ludwig 1882, p. 137.— Lampei;t 1885, p. 81-.— Tueel 



