CKRIANTHARIA. 



The length of the metamesenteries in relation 



to each other and to the length of the column 



counted from the aboral end of the stomato- 



daeum to the aboral pole 



The length of the ciliated tract 

 on M and m. 



Family I. Cerian thidae. 

 Pachycerianthus solitarius (Rapp.) . . . . 



aestuarii (Torr. a. Kleeb.) . 

 iohnsoni iTorr. a. Kleeb.) . 



fimbriatus Me. Murr. 



multiplicatus Carlgr. 



inonostic/ms Me. Murr. 



benedeni Roule . 

 maua (Carlgr.) . 



Cerianthus membranaceus (Spall.). 



lloydii Gosse 



vogti Dan 



valdiviae n. sp. Carlgr. 



ambonensis Kwietn. 



sulcatiis Kwietn. 



taedus Me. Murr. . 

 borealis Verr. . . 



Ceriantheopsis americanus (Verr.). 



Family 2. Acontif eridae. 

 Arachnanthus oligopodus (Cerf.) 



sarsi Carlgr. 

 (Arachnactis albida Sars) . . 



( lobiancoi Carlgr.) . . 



Family 3. Botrucnidif eridae. 

 Botrucnidifer norvegicus Carlgr 



Botruanthus benedeni (Torr. a. Kleeb.) 



distinct difference between M and m and be- 

 tween B and b. The longest M reach almost 



to the aboral pole, 

 little difference between Afand m which reach 



to the aboral pole. B and b very short, 

 rather great difference between M and m ; M l 

 reach to the aboral pole; most of HI l \ 2 of the 



length of the column '). 



M 1 reach to the aboral pole, the other M and 

 2 /3 and on '/3 f the length of the colunm 1 ). 



B and b short unequal in length. 



M reach to the aboral pole, m short about of 



the length of the P%; B and b short. 



M reach to the aboral pole, the other mesen- 

 teries short. 



M l reach to the aboral pole. The others short. 

 J/j, M K and M 13 on the right side and M l 

 and J/ fl an the left longer than the other M, 

 which are '/ 2 as long as the column 1 ), m much 

 shorter than M. 



m about as long as M. M '/^ of the length 

 of the column. 



m and M about the same length, reach to the 

 aboral pole. 



as the former. 



little difference in length between m and M. 

 M i/j of the length of the column '). 



difference in length between M and m resp. B 

 an b distinct but not great. M 5/ 7 , B 1/7 of the 



length of the column I ). 



like" the former; the mesenteries though some- 

 what shorter 



do not reach to the aboral pole, 

 great difference in length, M reach to the 

 aboral end, m are half the length of the column ! ). 

 great difference in length between M and m 

 little difference between B and b, the longest 

 M reach to the aboral pole. M increase in 

 length towards the chamber of multiplication 

 with many interruptions. 



fairly distinct difference in length between M 

 and m. 



distinct difference in length between vl/and m. 



like the former 



fairly distinct difference in length between M 

 and m. 



The longest J/end some way from the aboral 



pole. Distinct difference between M and m 



and between B and b. B and b long. 



Distinct difference between Ma.nA.rn. Jlf and m 



reach almost to the aboral pole (B and * of 



different length, short). 



reach almost to the aboral ends of 

 the mesenteries. 



long 

 i/4 of the length of the column 1 ). 



reach about to the aboral ends of 

 the mesenteries. 



reach on M to the aboral ends of 

 the mesenteries, on m not as long. 



reach almost to the aboral ends of 

 the mesenteries. 



rather long but short in compari- 

 son to the length of the mesen- 

 teries. 



long almost as the former, 

 rather long but less than I / 2 of the 



length of the mesenteries 1 ). 



rather short 



on the longest mesenteries almost 

 the same length as the hypoeulcua 



almost the same as the former 



like the former 



long, reach almost to the aboral 

 ends of the mesenteries 



on the longest mesenteries some- 

 what longer than the length of 

 the stomatodaeum 



>) The length of the mesenteries and of the column is always in these tables counted from the aboral end of the stomatodaeum to th< 



