148 " THETIS " SCIENTIFIC RESULTS. 



forms into the genus Alcijoniiim, where the sub-genus Erylhro 

 podium is designed for those that grow as menibranons expansions. 



Locality. — Eleven miles east of Broken Bay. 



Previou.sly recorded from 34"7'3" .S. Lat , 24°.59'3" E. Long., 

 Francis Bay, 100 metres. 



ALCYONIUM(ERYTHROPODIUM) REPTANS, Kiikenthal. 



(PI. Ixi., fig. i.) 



Alcyoiiiwn reptans, Kiikenthal, Alc3'onacea — Wiss. Ergeb. 

 deutsch. Tiefsee Exped., xiii., 1, 1906, pp. bZ-^i, pi ii., fig. 9, pi. 

 i.x., figs 45-49. 



Stations 17, 34, 41, 42, 43, 44, 48, 53. 



For 57 cm. of its entire length (83 cm.) the axis of a specimen 

 of PrimnoeUa austi-alasiae is completely overgrown wich a light 

 chocolate-coloured, Si/mpodiiim-\ike Alcyonid, which agrees with 

 Kiikenlhal's description of Alcyonium ( Erythropodium ) reptans. 

 The same species covers a branched Gorgonid axis from which all 

 trace of the original cceuenchj'ma has disappeared. Numerous 

 smaller specimens also occur that show scarcely more than a 

 fibrous residue of the Gorgonid a.\is which the Sympodinm-hke 

 mass had originally made its support. Without (he more com- 

 plete specimens with which to make a comparison, tlie.se last 

 forms would be very difficult of interpretation. 



The spicules in every case are (1) slender spindles with few 

 and simple warts, 306 x 084 mm. ; -27 x 032 mm. : -204 x 017 

 mm. ; (2) stouter, blunter spindles with more numerous, projecting 

 tuberculate warls— -255 x C68 mm.; -238 x 052 mm.; (3) 

 flattened spindles with jagged and toothed margins — -323 x 051. ; 

 •289 X '034 mm. ; (4) a few irregular bodies— 085 x -051 mm. 



Locality. — Eleven miles E. by N. of Barrenjoey, 30-40 

 fathoms, rocks. 



Previouslj' recorded from the east side of Bouvet Island, 

 470 metres. 



ALCYONIUM ETHERIDGEl, sp nov. 



(PI. Ixi., fig. 2 and 3 : pi. Ixii., fig. 3 ; pi. Ixvii., fig. 4 ; pi. Ixix.) 



Stations 10, 17, 28, 31, 34, 41, 44. 



This striking form is represented by numerous siiecimens. The 

 largest colonies have the following dimensions. — Height and 

 breadt^i in centimetres 75 x 8, 85 x 85., and 9 5 x 7., the 

 smallest is -5 cm. high by 7 cm. broad, 



