HOLOTHURIOIDEA 375 



Five species of this genus are known from the N.E. Atlantic, 

 nameh- Euphr. anchora Heroiiard, 31° 45' N., 42° 42' W., 

 3465 m. (•' Princesse Alice " ; only one specimen known) ; E. 

 cornuta Verrill (Syn, E. auriculata Perr.) (Fig. 222), from off the 

 Canaries to off Spain, 1918-2300 m. (" Talisman ", " Michael 

 Sars "), also known from off the east coast of N. America ; E. 

 Kerhervei (Her.) (Syn. Psychropotes Kerhervei Herouard), from 

 Azores to Canaries, 3825-5005 m. (" Princesse Alice ") ; E. Talis- 

 mani Perrier, 38° N., 29° 25' W., 2155-2220 m. (" Talisman ") ; 

 and E. violacea Perr., from off the Canaries and Portugal, 1180- 

 2210 m. (" Talisman ").i 



Key to the N.E. Atlantic species of Euphronides. 



1. Outer projection of larger deposits ending in four backwardly 



curved hooks, like an anchor (" Monaco ", Ixvi., p. 103 



Pis. I. 22-30, VI. 3) . . . . E. anchora Her. 



Outer projection of deposits not anchor-like ... 2 



2. Five or six pairs of anterior dorsal appendages, the two hindmost 



pairs much larger (" Talisinan " Holoth., p. 434, Pis. XIII. 1-2, 



XX. 12-13) E. cornuta V err. 



Four pairs of anterior dorsal appendages .... 3 



3. The hindmost pair of dorsal appendages not enlarged 



(" Monaco ", xxi., p. 27, PI. IV. 1-9 ; Ixvi., p. 107, PL III. 4-5) 



E. Kerhervei (Her.) 

 The hindmost pair of dorsal appendages much larger . . 4 



4. Ventral deposits very numerous, small, arms slightly bent ; 



dorsal deposits very large, ca. 1 mm. in diameter, spines on 

 arms rather fine and small, excepting the basal spine (" Talis- 

 man'' Holoth., p. 441, PL XX. 15; ''Monaco'', xxi., p. 30, 



PL II. 19-22) E. Talismani Perr. 



Ventral deposits few, small, arms nearly flat ; dorsal deposits 

 ca. 0-55 - 0-95 mm. in diameter, spines on arms rather coarse 

 (" Talisman " Holoth., p. 438, PL XX. 14) E. violacea Perr. 



Psychropotes Theel. (Fig. 223.) 



Body flat anteriorly, rising in height posteriorly, terminating 

 in a long tail-like prolongation which issues from the dorsal side 

 near the posterior end. Mouth and anus ventral ; tentacles 10-18. 

 Usually a double row of tube-feet along the mid-ventral ambula- 

 crum. Lateral tube-feet large, conical, only the hindmost more 

 or less distinctly united by a web. Deposits cross-shaped bodies, 

 often different in the outer and inner dermal layer ; those of the 

 ventral smaller than those of the dorsal surface. 



1 It seems doubtful whether E. violacea is really distinct from 

 E. Talismani. 



