TROPICAL PACIFIC HOLOTHURIOIDEA. 139 



Mem. M. C. Z. 17, p. 100, plate 6, fig. 1-5). In one specimen it is possible 

 to find the tentacles and there seem to be only sixteen. 



Station 4647. Eastern Tropical Pacific, 4° 33' S., 87° 42' 30" W., 2,005 fms. Bott. temp. 35.5°. Lt. gy. 



and br. glob. oz. 

 Station 4658. Eastern Tropical Pacific, 8° 30' S., 85° 35'-36" W., 2,370 fms. Bott. temp. 35.3°. Fne. 



gn. m., mang. nod. 



Two specimens. 



PSYCHROPOTIDAE. 



Euphronides dyscrita, 1 sp. nov. 

 Plate 2, fig. 3. 



Length, 75 mm.; width, 17 mm. or more. Dorsal appendage, 18 mm. 

 long, 10 mm. wide at base, 5 mm. wide at tip; situated only 8 mm. from pos- 

 terior end of body; somewhat flattened and with tip rounded. Mouth and 

 anus, ventral. Tentacles apparently 18, but the number is hard to make out. 

 Color, yellow-brown above; deep purple below; tentacles, very deep purple. 

 There is a well-marked and frequently lobed margin but it is in too poor condi- 

 tion to permit its exact character to be determined. 



Calcareous particles strongly arcuate 4-armed bodies with thorns but no 

 conspicuous spines either at center or elsewhere; arms 125 y. long or longer 

 and occasionally twice that, but the large ones are very slender. Though 

 very abundant dorsally, the spicules are not crowded there ; if present ventrally 

 they are more scattered and are concealed by the heavy pigmentation. 



Station 4672. Peru: southwest of Palominos Light House, 88 miles. 2,845 fms. Bott. temp. 35.2°. 

 Fne. dk. br. infus. m. 



Two specimens. 



The holotype is in poor condition but the paratype is much worse and gives 

 no assistance as to the generic and specific characters. It is light gray above 

 with a brownish tinge but most of the external layer of skin is rubbed off. It 

 shows the well-marked, lobed margin but lacks the dorsal appendage or at best, 

 possesses but a fragment. The species looks like a short-tailed Psychropotes 

 but the appendage is so short and the calcareous particles are so strongly arcuate, 

 it seems better placed in Euphronides. The position of the dorsal appendage, 

 and the calcareous particles serve to distinguish it from any other member of 

 the genus. 



1 56o*piTos = hard to determine, in reference to the doubtful generic position. 



