6 



JAMES A. GRIEG 



[REP. OF THE "MICHAEL SARS" NORTH 



23 /s. Stat. 41, 28 c 8' N., 13° 35' W., 1365 m., yellow mud. One 

 specimen. 



»A. Stat. 95, 50° 22' N., 11° 44' W., 1797 m. Common. Two 



specimens were preserved. 



The largest specimen was 220 mm. long and 47 mm. 

 broad. Several specimens had retained some of the 

 colouring. Judging from these the colour of the ventral 

 surface was a deeper dark violet than in the specimen 

 depicted by Koehler. It was very light violet on the 

 dorsal surface, while Koehler's specimen has a yellowish 

 hue. 



Benihogone rosea is an east Atlantic species, previ- 

 ously taken by the "Caudan" in the Bay of Biscay, and 

 by the "Talisman" off the Azores and the west coast of 

 North Africa. Horizontal distribution, 20° 41' to 50° 22' 

 N., bathymetrical range, 1103 to 2300 m. 



Peniagone wyvillii Theel. 

 (PI. 3, figs. 3—5). 



Peniagone wyvillii Theel, Holothurioidea 1, Rep. Sci. Res. 

 "Challenger", vol. 4, part 13, 1881, p. 42, pi. 10, figs. 3, 4, pi 44, figs. 

 5, 7, pi. 37, fig. 6. 



8 /s. Stat. 53, 34" J 59' N., 33° V W., 2615 to 2865 m., yellow 

 hard clayey mud, 5 specimens. 



The two best preserved specimens measured: 



Total length to the point of the 







dorsal processes 



92 mm., 



73 mm 



Basal length 



62 „ 



54 „ 



Greatest breadth 



27 „ 



24 „ 



Height 



29 „ 



25 „ 



Length of the biggest dorsal 







processes 



22 



16 ,, 



Breadth of the biggest dorsal pro- 







cesses 



1 1 „ 



9 „ 



Fig. 1. Calcareous deposits from the body of Peniagone wyvillii Theel. 



8 tentacles and 6 ambulacral papillae along both 

 sides of the ventral surface. The hindmost of these 

 papillae is situated at 7 mm. from the anus in the 

 largest of the specimens. There is a space of 6 to 7 

 mm. between the papillae respectively. The largest papillae 

 are 9 mm. long. Besides these large papillae three very 

 small ones are found at the lower border of the anus. 

 The disc of the tentacles is 5 mm. broad. The body, and 

 more especially the dorsal surface, is very sparcely covered 

 with calcerous deposits. They are cruciform and spiny 

 and frequently furnished with protuberances (fig. 1). The 

 calcareous deposits of the ambulacral papillae like those of 

 the body are in part cruciform in part rod-shaped (fig. 2). 

 The spicules may sometimes be branched. The calcareous 

 deposits of the tentacles resemble those of the ambulacral 

 papillae. But while the cruciform deposits are most fre- 

 quent in the papillae, the spicules predominate in the 

 tentacles. 



Fig. 2. 



Calcareous deposits from the tube-feet of Peniagone wyvillii Theel. 



The colour of the specimen in formol was hyaline 

 reddish, put into alcohol it changed to grayish. The 

 disc of the tentacles was pale red. 



The specimens agree closely in appearance with 

 P. wyvillii, and I have therefore referred them to that 

 species. Theel indeed states that P. wyvillii, like the 

 other species of the genus Peniagone, has 10 tentacles, 



