280 



1)1! J. H. ASHWORTH AND DR JAMES RITCHIE ON THE 



Distinctive Characters of 



Dicoryne conybearei 



(Allman), char, 

 emend. 



Dicoryne 

 (Alder) 



conferta 



Matuue Tkophosomb. 



Height. 



Up to 4-8 nnii. 



Dicoryne 

 Sars 



fle.aiosa, 



Dicoryne annul i it a, 

 v. Lendenfeld 



Up to 13 mm. 



i mm. 



About 10 mm 



Hydrocaulus. 



Branches. 



Few or none, seldom 

 subdivided, arising 

 from a main stem 

 which resembles 

 them in thickness 



Many, usually sub- 

 divided, arising 

 from a weak main 

 stem, which scarce- 

 ly exceeds them in 

 diameter 



Few, occasionally 

 subdivided, arising 

 from a thin, flexile 

 stem which is often 

 dichotomously di- 

 vided 



Few, not subdivided, 

 arising from a 

 stout stem 



Wriukling of Perisarc. 



Generally distributed, 

 but irregular and in- 

 distinct 



Base of stem indis- 

 tinctly wrinkled 



Hardly any wrinkles 



Wrinkled throughout, 

 " terminal cup-shaped 

 expansions a little 

 larger than in D. con- 

 ferta " 



Polyp. 



Maximum N f 



No. of Polyps „, ', 

 u , Jt lentacles 

 on Hydro- 

 caulus. 



Polyp. 



6 on youngest 

 to 16 on 

 largest speci 

 men 



[About 12] 



[About 3] 



[2] 



G on youngest 

 to about 16 



12 



[About 10 or 

 11] 



Note. — Square parentheses [ ] indicate that in view of the incomplete descriptions of authors the 



