PLATE 41. 



Hyalonema (Hyalonema) agassizi Lendenfeld. 



Fig. 1 —form B, Station 4651. 



Figs. 2-11 —form A, Station 4656. 



Fig. 12 —form D, Station 3684 (A. A. 17). 



Figs. 13, 14 — form C, Station 4740. 



1. — Side-view of the specimen of form B; natural size; phot. Zeiss, anastig. 480/412 mm. 



2. — Side-view of the specimen of form A; reduced 1: 0.83; phot. Zeiss, anastig. 480/412 mm. 



3-6. — Obhque view of hypodermal pentactines of form A; magnified 50; phot. Zeiss, achr. aa, compens. 

 oc. 6: 

 3, 4, 6, larger ones; 

 5, a small one. 



7. — Side-view of a small hypodermal pentactine of form A; magnified 50; phot. Zeiss, achr. aa, 



compens. oc. 6. 



8. — Apical view of the lateral rays of a large hypodermal pentactine of form A; magnified 50; phot. 



Zeiss, achr. aa, compens. oc. 6. 



9. — The end-part of a lateral ray of a large hypodermal pentactine of form A; magnified 300; phot 



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



10. 11. — Smaller hypodermal pentactines of form A; magnified 50; phot. Zeiss, achr. aa, compens. oc. 6: 



10, apical view of the lateral rays of one; 



11, side-view of another 



12. — The specimen of form D seen from above; natural size; phot. Zeiss, anastig. 480/412 mm. 



13, 14. — A specimen of form C; reduced 1: 0.83; phot. Zeiss, anastig. 480/412 mm.: 



13, seen from below; 



14, seen from above. 



