ACTINOrODOUS IIOLOTHURIOIDEA. 



Psolus sqaamatus 

 >t sole. X 201). 



Textfig. 42. 



rt,TforHt.;il plalcs 



description yiven of P. s.juamatus, is so closo tluxt I liavu coii- 

 siderod it safest to refer them to tlio present S])ecies. 



All the specimens arc from 

 the Sagami Sea, and all from a 

 depth of 400 hiro (:=333 fathoms, 

 u depth greater than that hitherto 

 rei)Oi'ted). They possess ten ten- 

 tacles. The odd ambulacrum of the 

 sole possesses some pedicels in the 

 anterior and posterior portions, but 

 is devoid of pedicels in the middle, 

 which is by far the largest part. Pedicels around tlu; margin of 

 the sole are in 3 — 4 rows. Dorsal scales are beset with fine 

 grains. I cair not find that they liavc any special arrangement 

 around the mouth or anus. The sizes of the specimens are : 

 7 X 2.5 cm. ; 7x2 cm. ; (i.5 x 4 cm. ; (i x 4.5 cm. ; 5.5 x 2 cm. ; 

 4x1.5 cm. The comparatively small widths are apparently due to 

 the lateral compression to which the specimens had been subjected. 



LocaUlij : — Sund; Greeiiliuul ; Kiuilcs (Selenka '()7, Semi'ei; '08); 

 West Coast of 8cainliiiavia from Bfrgeu to LofotcJi and I'lnmark (Saks, 

 DuBEN och KoitEX, Damelssen og KoKEX, MiJuius uikI Butschei, AXDr.EW 

 and Bakket) ; ]?ritish Is. (Nokman, Hodoe) ; (iiilf of St. Lanrenec (Belt.); 

 Cjast of New England (Verehx) ; Barents See, T'ergensf jord (SLriTi:n '95) ; 

 Pacific Grove, Cal. (CLA.RK '01) ; Sagami Sea. 



Genus Thyone ()ki;\ 1^15. 

 54. T/ii/one sftccllus (Sixenk.v). 



(PI. YU., fig. (J:! ; textfig. 43). 

 Sldxs mceUn-s SiaESKA 18U7, p. 'io'j, Taf. XX., Fig. 115— 6". 



