8 2 DISCOVERY REPORTS 



Distribution. H. fasmeriana has been previously recorded from Stewart Island, to the south of 

 South Island, New Zealand (Michaelsen, 1924) and from Christchurch, South Island, New Zealand, 

 and East Cape, North Island, New Zealand (Brewin, 1946, 1950, 195 1, 1953). The 'Discovery' record 

 considerably extends the range northwards. The species seems to be confined to the New Zealand 

 region, but within that region it exists in the different temperature conditions which prevail at the 

 extreme south and extreme north of these islands. 



Genus Cystodytes von Drasche, 1884 



Cystodytes dellechiajei (Delia Valle) 



Distoma dellechiajei Delia Valle, 1877, p. 40. 

 For synonymy see van Name (1945), p. 133. 



Occurrence. St. 934: North Island, New Zealand, 98 m. St. 935: North Island, New Zealand, 

 84 m. St. WS 871 : Patagonian Shelf, 336-342 m. 



Colony. The several colonies collected from St. 935 are ovoid rather than flat and encrusting; the 

 largest is 3-0 cm. in length. The colony from St. 934 has its outline broken by a number of projecting 

 lobes. 



Distribution. This species is very widely distributed, mainly in tropical and subtropical waters. 

 It also extends to the more temperate waters of New Zealand and the Chatham Islands (Brewin, 

 1948, 1951, 1952, 19566). 



C. dellechiajei f. antarctica (Sluiter) (Text-fig. 23) 

 Cystodytes antarcticus, Sluiter, 1912, p. 460; 1914, p. 27; Arnback, 1950, p. 26, pi. 5, fig. 25, text-figs. 6-8. 

 Occurrence. St. 181: Palmer Archipelago, 160-335 m - St. 190: Palmer Archipelago, 93-126 m. 

 Colony. Several colonies were collected from the Palmer Archipelago, and the largest of these 

 measures 6 cm. long by 1-5 cm. wide and about 1-5 cm. thick. This colony is considerably larger than 



0.3 mm 

 Text-fig. 23. Cystodytes dellechiajei (Delia Valle): A, spicules of f. antarctica (St. 190); B, spicules of typical form (St. 934); 



C, spicules of typical form (St. WS 871) 



any collected by the second Charcot Expedition or the Swedish Antarctic Expedition of 1901-3, the 

 only two expeditions which have hitherto taken the form. 



The disc-shaped spicules (Text-fig. 23 A), which reach 0-3 mm. in diameter, have a crenelated 

 margin, as described by Arnback (1950). 





