152 DISCOVERY REPORTS 



250 mm. long, a much greater length than any previously recorded; the male pinnule is 

 from a smaller specimen. 



One of the specimens from St. 190 is infested with a Myzostomum on the disk. 



Genus Solanometra A. H. Clark 



Solanometra antarctica (P. H. Carpenter) 



Antedon antarctica P. H. Carpenter, 1888, p. 144, pi. i, figs. 6 a-d, 7 a, b, pi. xxv. 

 Antedon australis P. H. Carpenter, 1888, p. 146, pi. xxvi, figs. 4, 5, pi. xxvii, figs. 14-20. 

 Promachocrinus {Solanometra) antarctica Clark, 1915 a, p. 135— list of earlier references and 



synonymy. 

 Solanometra antarctica Clark, 1937, p. 9. 



There are no specimens of this species in the present collection. 



Bell records it (as Antedon antarctica) from the Ross Sea both in his Discovery (1908) 

 and Terra Nova (19 17) reports. I have re-examined the specimens and find that not 

 one of them is Solanometra atitarctica. 



The species is known only from the Challenger specimens taken near Heard Island 

 (of which there are six in the British Museum collection, three each from Sts. 150 and 

 151), and from the Australian Antarctic Expedition's collection from near the coast of 

 Adelie Land on the Antarctic continent. 



Subfamily ZENOMETRINAE 

 Genus Eumorphometra A. H. Clark 



Eumorphometra aurora n.sp. (Plate IV, fig. i) 



St. 160. 7. ii. 27. Near Shag Rocks. 53° 43' 40" S, 40° 57' W. 177 m. Gear DLH. Bottom: 

 grey mud, stones and rock. One specimen. 



Description. All the arms are broken off at what I judge to be about three-quarters 

 of their length; the parts remaining are composed of about 30 brachials and are nearly 

 20 mm. long. 



The centrodorsal is a rounded cone not so high as it is broad at the base. The ventral 

 edge is produced into very low and wide corners interradially. The cirrus sockets are 

 arranged in ten columns, one close against another, the arrangement of which is regular 

 but for the most ventral circle which is composed of fourteen. 



Cirri ca. XLI, 17-28. They increase in size from the apex of the centrodorsal to the 

 edge. Those around the dorsal pole are of about 17-19 segments and short; the next 

 circle are longer, of 21-23 segments; the outermost are of 27 or 28 segments and up to 

 10 mm. or more in length, about twice as long as the apical (Fig. 6 a). The first three 

 segments of the cirri are broader than long, the fourth is as long as broad, and the fifth 

 to the eighth or ninth are sHghtly longer than broad. All these have the distal end 

 slightly flared, more strongly on the dorsal than the ventral side, so that they are a little 



