70 GEODIA VARIOSPICULOSA. 



DIMENSIONS OF THE SPICULES OF GEODIA VARIOSPICULOSA THIELE {continued). 





Var. 

 typica 



Var. 

 clavigera 



Var. 

 intermedia 



Var. 

 inicraster 



Orthoplagio- 

 triaenes 



rhabdome 



length mm. 



2 



1 .25 



2.4-3 



2.6-3 



thickness at 

 cladome /i 







35-65 



30-50 



maximum 

 thickness fi 



70 





50-75 



43-64 



clades length /t 



4U0-4d0 



250-300 



220-550 



240-760 



angle between clade-chords 

 and rhabdome ° 



103* 





100-111 



99-105 



Dichotriaenes 



rhabdome 



length mm. 



2 



1.25 





1.7-2.6 



thickness at 

 cladome n 



75* 





45-48 



30-40 



maximum 

 thickness /< 



90* 





55-60 



45-58 



main clade length /j 



200* 





150-160 



160-340 



end clade length jx 



300* 





170-280 



140-400 



angle between main eladc- 

 ehords and rhabdome ° 



90* 





a little 

 over 90 



a little 

 over 90 



Mesoprotri- 

 aenes 



rhabdome 



length mm. 



2.5 





2.9-3.2 





thickness at 

 cladome ji 



12* 





18-23 



7-20 



epirhabd length /i 



95 



30-60 



60-75 



25-90 



clades length /j 



220 



60-70 



100-142 



40-140 



angle between clade-chords 

 and epirhabd ° 



40* 





37-44 



30-63 



Large anatri- 

 aenes 



rhabdome 



length mm. 







4.2 



3.6-5.2 



thickness at 

 cladome // 



20* 





12-40 



12-46 



clades length p. 



160-180 



30-40 



30-135 



30-130 



angle between clade-chords 

 and rhabdome ° 



28-42* 





35-48 



37-70 



Minute dermal 

 anaclades 



rhabdome 



length /£ 



286* 





205-560 



275-410 



thickness at 

 cladome /t 



1* 





1-3.5 



1.5-4 



maximum 

 thickness /i 



2* 





3-7.5 



4-6 



clades length fi 



5 





3-13 



5-12 



angle between clade-chords 

 and rhabdome ° 



50* 



40-52 



38-54 



'The dimensions marked * are taken from Thiele's figures. 



