Geodia mesotriaena Lendenfeld. 



Figs. 1, 4, S, 14, 15, 17, 18, 20, 22-32. — var. megana Lendenfeld. 

 Figs. 2, 6, 7. 10-13, 16, 19, 21. — var. microana Lendenfeld. 



Figs. 3, .5, 9. — var. pachana Lendenfeld. 



1. — Group of small spicules in a centrifugal spicule-preparation of var. megana; magnified 300; phot. 

 Zeiss, apochr. 4, compens. oc. 6: 



a, parts of .small dermal rhabds; b, medium oxyasters. 

 2. — Group of small spicules in a centrifugal spicule-preparation of var. microana; magnified 100; phot. 

 Zeiss, apochr. 16, compens. oc. 6: 

 a, small dermal rhabds; b, euasters. 

 3. — Group of small spicules in a centrifugal spicule-preparation of var. pachana; magnified 100; phot. 

 Zeiss, apochr. 16, compens. oc. 6: 

 a, small dermal rhabds; b, euasters. 

 4. — Group of small spicules in a centrifugal spicule-preparation of var. megana; magnified 100; phot. 

 Zeiss, apochr. 16, compens. oc. 6: 

 a, small dermal rhabds; b, euasters. 

 5. — Group of small spicules in a centrifugal spicule-preparation of var. pachana; magnified 300. phot. 

 Zeiss, apochr. 4, compens. oc. 6: 

 a, parts of small dermal rhabds; b, ox ysphaerasters ; c, small strongylosphaerasters. 

 6. — Group of small spicules in a centrifugal spicule-preparation of var. microana; magnified 300; phot. 

 Zeiss, apochr. 4, compens. oc. 6: 



a, part of a small dermal rhabd; b, large oxyaster ; c, small strongylosphaerasters; d, medium 

 oxyaster. 

 7. — Group of euasters in a centrifugal spicule-preparation of var. microana; magnified 300; phot. Zeiss, 

 apochr. 4, compens. oc. 6: 



a, large oxyaster; b, large strongylosphaeraster; c, oxysphaeraster ; d, small strongylo.sphaer- 

 asters. 

 8. — Group of euasters in a centrifugal spicule-preparation of var. megana; magnified 300; phot. Zeiss, 

 apochr. 4, compens. oc. 6: 



a, sterroid; b, oxysphaeraster. 

 9. — Group of euast«rs in a centrifugal spicule-preparation of var. pachana; magnified .300; phot. Zeiss, 

 apochr. 4, compens. oc. 6: 



a, large strongjdosphaeraster ; b, small oxyaster. 

 10, 11, — Groups of euasters in a centrifugal .spicule-preparations of var. microana; magnified 600; u. v. 

 phot. Zeiss, q. monochr. 2.5, q. oc. 5: 



a, large medium oxyaster with blunt conic rays; b, small strongylosphaeraster. 

 12, 13. — Group of euasters in a centrifugal spicule-preparation of var. microana; magnified 600; u. v. 

 phot. Zeiss, q. monochr. 2.5, q. oc. 5: 

 12, focused higher; 13, focused lower; 



a, large mediiun oxyaster with stout blunt rays; b, small strongylosphaerasters. 

 It. — Group of euasters in a centrifugal spicule-preparation of var. megana; magnified 600; u. v. phot. 

 Zeiss, q. monochr. 2.5, q. oc. 5: 



a, medium oxyasters; b, small strongylosphaeraster. 

 15. — Group of large medium oxyasters in a centrifugal spicule-preparation of var. megana; magnified 



200; phot. Zeiss, apochr. 8, compens. oc. 6. 

 16. — Small strongylosphaeraster with numerous rays of var. microana, magnified 600; u. v. phot. 



Zeiss, q. monochr. 2.5, q. oc. 5. 

 17, 18. — Small strongylosphaerasters with a medium number of rays of var. megana; magnified 900; 



u. V. phot. Zeiss, q. monochr. 2.5, q. oc. 7. 

 19. — Medium oxyaster of var. microana; magnified 600; u. v. phot. Zeiss, q. monochr. 2.5, q. oc. 5. 

 20. — Group of small strongylosphaerasters in a centrifugal spicule-preparation of var. megana; magni- 

 fied 600; u. V. phot. Zeiss, q. monochr. 2.5, q. oc. 5. 



