74 " ENDEAVOUR " SCIENTIFIC RESULTS. 



Distribution. — Hitherto known only from " Thetis " speci- 

 mens taken off the coast of New South Wales at the fol- 

 lowing localities: — Station 34. off Port Jackson, 39-36 

 fathoms ; Station 4:4, off Coogee, 49-50 fathoms (Thomson 

 and Mackinnon). 



MOPSEA ELEGANS, Thomson and Mackinnon. 



Mopsea elegans, Thomson and Mackinnon, Mem. Austr. 

 :\Ius., iv., 13. 1911. p. G77, pi. Ixiv.. figs. 3, 4, pi. 

 Ixviii., fig. 5, pi. Ixxii. 



A number of broken pieces showing dichotomous, .sub- 

 parallel branching, agree with Thomson and Mackinnon's 

 type. The height of the largest fragment is 18 cm., Avith 

 a width of 13 cm. The branches vary from 1-5 mm. to 

 2 mm. in diameter. 



The polyps are arranged in two alternating rows on each 

 side of the younger branches, leaving a median bare line on 

 ■each siu'face. They tend, however, to encroach on these, 

 especially towards the lower ])ortions of the colony, where 

 they are arranged in three or four rows. A comparison with 

 the polyps of the '" Thetis " type shows that the " Endeavour" 

 specimens are more slender, a difference due probably to 

 drying. 



The spicules of this species are : — (1) superficial ctenoid 

 scales, each with a nucleus from which radiate fine ridges — 

 -077 X -052 mm. ; -061 ■ -052 mm. ; -043 x (143 mm. ; (2) 

 tuberculate capstans Avith scarcely any Avaist — 057 x -043 

 mm. ; -049 x-(]35 mm. ; -038 x-035 mm. 



The colour is golden- broAvn. 



Localities. — Shoalhaven Bight, Xcav South Wales, 15-45 

 fathoms. 



Six miles S. 30° E. of Brush Island, New South Wales, 65 

 fathoms. 



Distribution. — Hitherto known only from " Thetis " speci- 

 mens taken off the coast of Xcav South AVales at the folloAving 

 localities : — Station 34, off Port Jackson, 39-36 fathoms ; 

 Station 41. off W'ata Mooli, 52-71 fathoms ; Station 42, off 

 Wata Mooli, 70-78 fathoms ; Station 47, off Bidgo, 63-57 

 fathoms ; Station 48, off Wollongong, 55-56 fathoms 

 (Thomson and Mackinnon). 



