46 



CBRIANTHARIA. 



Family i. Cerianthidae. 

 Pachycerianthns solitarius (Rapp.) ... 



aeshiani (Torn a. Kleeb.) 

 1 iohnsoni iTorr. a. Klecb.) 



» fimhriatiis Mc. Murr. . . . 



miiltiplicatiis Carlgr 



» mottostic/itis Mc. Murr. . . . 



» hriitiliiii Roulc . 



» maua (Carlgr.) . . 



Ccrianthus membrunaceus (Spall.) 



llaydii (iosse 



vogti Dan. 



valdiviac ii. sp. Carlgr. 



amboiicnsis KwiL-tii. 



sulcattii Kwietii. 



taedus Mc. JIurr. 

 borealis Verr 



Ccrianllteopsis americanus (Verr.) 



I'aiiiily 2. Acontif eridac. 

 Arachiianlhm oUgopodiis (Cerf.) 



(Arachnactis albida Sars) . 



lobiancoi Carlgr.) 



I-'aiiiily 3. Botrucnidiferidae. 

 Hotrucnulifcr norvegicus Carlgr 



Botniantkus b,mdeni (Torr. a. Kleeb.) 



The length of the nietanieseiiteries 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 



distinct difference between M and m and be- 

 tween B and b. The longest M reach almost 



to the aboral pole, 

 little difference between M and m which reach 



to the aboral pole. B and b very .short, 

 rather great difference between J/ and m\ M^ 

 reach to the aboral pole; most of M ^2 of the 



length of the column '). 

 J/j reach to tlie aboral pole, the other M and 

 2/3 and on I3 of the length of the colunm"). 



B and b .short unequal in length. 



M reach to the aljoral pole^ m short about of 



the length of die P^ ; B and * short. 



M reach to the aboral pole, the other mesen- 

 teries short. 



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

 J/j, J/fi and jyj3 on the right side and J/, 

 and J/g an the left longer tlian the other it. 

 which are '/z as long as the column ■ ). m much 

 shorter than M. 



in about as long as .1/. M 'j 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 of the length of the column '). 



difference in length between J/ and m resp. B 

 an li distinct but not great, ^fi|^, B '^'1 of the 



length of the columns, 

 like' the former; the mesenteries though some- 

 what shorter 

 do not reach to the aboral pole, 

 great difference in length, .1/ reach to the 

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

 .great difference in length between J/ and in 

 little difference between /? and *, the longest 

 M reach to the aboral pole. .1/ increase in 

 length towards the chamber of multiphcatiou 

 with many interruptions. 



fairly distinct difference in length between M 

 and m. 



The length of the ciliated tract 

 on AI and m. 



sarsi Carlgr. : distinct difference in length between .l/ai 



reach almost to the aboral ends of 

 the mesenteries. 



long 

 '/) of the length of the column'). 



reach about to the aboral ends of 

 the mesenteries. 



like the former 



fairly distinct difference in length between M 

 and m. 



The longest J/ end some way from tlie .iboral 



pole. Distinct difference between .1/ and m 



and between B and *. B and b long. 



Distinct difference between J/andm. .1/ and /;/ 



reach almost to the aboral pole (B and b of 



different length, short). 



■) The length of the mesenteries and of the column is always in these tables counted from the aboral end of the stomatodaeuni 



reach on .1/ to the aboral ends of 

 the mesenteries, on m not as long. 



reach almost to the aboral ends of 

 tlie 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 '/j of the 



length of the mesenteries '). 



> 



? 

 ? 



rather short 



on the longest mesenteries almost 

 tlie same length as the hyposulcus 



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 stomatodaeuni 



ty: 



t.vi 



