346 



DISCOVERY REPORTS 



this species the form varies from massive or flabellate, to the highly speciaUzed form 

 which I have called " carrot-shaped " (cf. fig. 25 d, p. 304). The specimens of this species 



Fig. 44. Plan of distribution of the species of Tedania. T. nigrescens, Schmidt, is represented by the black 

 dots, the remaining species by crosses. The size of the crosses is proportionate to the degree of specialization 

 attained by the species they represent. 



in the present collection, classified as follows, show how this specialization is increased 

 as the Antarctic continent is approached : 



T. oxeata, Topsent; T.pectinkola, Thiele; T . phacellina , Topsent; T. placenlaeformis, Brondsted; T. scotiae, 

 Stephens; T. suctoria, Schmidt (with T. incresceris, Schmidt, and T. comdigera, Topsent, as synonyms); 

 T. tenuicapitata, Ridley and Dendy; T. {Tedaiiione) zvilsoni (Dendy); and T. {Tedaniopsis) lurbinata (Dendy). 

 [The following must be removed from the genus Tedania: T. crisla-gaUi , Dendy, to Axinellidae; T. 

 coubnani, Kirkpatrick, to Kirkpatrickia; T. variolosa, Kirkpatrick, to Kirkpatrickia; T. laevis, Kirkpatrick, 

 to ? Plocamicae; T. laxa, Lendenfeld, to Stylotella agminata, Ridley; T. tenuispina, Lendenfeld, to Stxlotella 

 agminata, Ridley; T. leptoderma, Topsent, to Lissodendoryx isodictyalis , Carter.] 



