

GRAl' ZU SOLMS-LAUBACH— MONOaiUPlI OY THE ACETABULARIEJ£. :J9 



8. Halicoryne Wrighiii, Harv. Transverse section of the spore-membrane through the edge of the 



lidj after careful decalcification, drawn without a prism and very strongly magnified. 



9. Halicoryne apicata, Kiitz, Fragment of a fertile whorl with two complete rays, of whi(;]i one, a, 



is seen obliquely from the side, the other, b, from above, x . 



10. Halicoryne Wrightii, Harv. Similar view as fig. 4 ; same lettering. 



1 1 . Halicoryne spicata, Kiitz. Basal portion of a ray from a fertile w horl with a hair-rudiment, a, 



preserved, marking the position of the coronal prominence, which is not visible. 



\_Note to p. 12. — Whilst this paper was passing through the press, I received from 

 Professor Cramer a memoir on Halicoryne Wrightii [7] in which the facts are correctly 

 stated, so far as the yet unfruiting plant is concerned. He found solitary dichotomously- 

 branched hairs on the coronal prominences ; in my specimens these were all uniformly 

 reduced to small unbranched processes. — May 20, 1895.] 



