GEODIA. 



229 



A5 The dermal asters small, usually 5-G, the largest never over 

 8.3 n in diameter. Regular or irregular (ataxastrose). 



G. erinaceus (Lendenfeld). G. variospiculosa Thiele. 

 var. typica Lendenfeld var. clavigera Thiele. var. 

 intermedia Lendenfeld. var. micraster Lendenfeld. 

 G. reniformis Thiele. G. japonica (Sollas). G. cook- 

 soni (Sollas). G. hilgendorfi Thiele. var. typica 

 Lendenfeld var. granosa Thiele. G. ataxastra Lenden- 

 feld. 



B5 The dermal asters large, usually 8-12, the largest never under 

 8 in diameter. Usually regular. 

 Ag Sterrasters over 300 long. 



G. hirsuta (Sollas). 

 Be Sterrasters up to 70-125 /( long. 



A7 The large choanosomal rhabds are chiefly amphioxes. 

 G. mesotriaena Lendenfeld. var. pachana Lendenfeld. 

 var. megana Lendenfeld. var. microana Lendenfeld. 

 G. agassizii Lendenfeld. G. mesotriaenella Lendenfeld. 

 G. breviana Lendenfeld. G. ovis Lendenfeld. G. 

 s])haeroides (Kieschnick). G. micropora Lendenfeld. 

 G. berryi (Sollas). G. kiikenthali Thiele. 

 B7 The large choanosomal rhabds are chiefly amphistron- 

 gyles. 



G. amphistrongyla Lendenfeld. 

 Ce Sterrasters under GO /( long. 



G. lophotriaena Lendenfeld. 

 Bo The large choanosomal asters are acanthtylasters. 



G. acanthtylastra Lendenfeld. 

 Regularly triaene promesocladcs (proclades) absent. Promesoclades (])r()- 

 clades) with more or less reduced cladomes (only two or one clatles) some- 

 times present. 



G. nigra Lendenfeld. G. media Bowerbank. G. 

 magellani (Sollas). G. exigua Thiele. G. incon- 

 spicua (Bowerbank). 



