276 



DISCOVERY REPORTS 



This Species is viviparous, and it seems almost certain that the development is intra- 

 ovarial. Further, it seems beyond doubt that this species has separate sexes; at least, 

 I have found the various specimens opened to have either purely male or purely female 

 gonads (there is only one gonad, more rarely two at the interradial side of the genital 

 slit). 



Some of the specimens from St. WS 33 look rather peculiar on account of their being 

 preserved with the mouth widely open, the papilla of the inner mouth tentacle thus 

 becoming very prominent ; its edge may also be more or less distinctly serrate (Fig. 14ft). 

 As these specimens do not show other special characteristics I do not hesitate to refer 

 them also to A. Lymatii. 



Amphiura deficiens, Koehler 



Amphiiira deficiens, Koehler, 1922. Austral. Antarct. Exped. Echinod. Ophiuroidea, p. 28, 



pi. Ixxx, figs. 1-4. 

 A. tomentosa deficiens, Hertz, 1926. Deutsche Siidpolar- Exped. Ophiuroiden, p. 31. 



St. 160. 7. ii. 27. Near Shag Rocks, South Georgia, 177 m. 2 specimens. 



St. 170. 23. ii. 27. Off Cape Bowles, Clarence Island, 342 m. 4 specimens. 



St. 175. 2. iii. 27. Bransfield Strait, South Shetlands, 200 m. 5 specimens. 



St. WS 33. 21. xii. 26. 54° 59' S, 35° 24' W, South Georgia, 130 m. 5 specimens. 



These specimens are in good agreement with the description and figures given by 

 Koehler. The figures are, however, not clear enough to show the details distinctly 



Fig. 15. Amphiura deficiens, Koehler. Part of oral side [a); dorsal side of arm, 

 from the proximal part {b). 25. 



and I have thus thought it desirable to give a couple of drawings to show the shape of 

 the plates more clearly. 



It may be pointed out that most of the specimens have the proximal half of the 

 ventral interradius naked, but in other specimens the scales continue almost to the edge 

 of the buccal plates. 



This species is viviparous ; there is only one gonad at each bursal slit, placed on the 

 interradial side. I regret to have forgotten to notice the character of the gonads, whether 



