ANNOTATED LIST OF SPECIES. 
THE COMATULIDS. 
i^'- Suborder OLIGOPHREATA. 
I. Family Comasteridae A. H. Clark. 
Key to the Subfamilies of the hamily Comasteridae. 
a^ Cirri present 
b' the distal cirrus segments bear dorsal processes 
c^ ten or more arms; if there are more than lo arms the divi- 
sion series may be all 2, in which case the first two bra- 
chials of the outer arms are united by pseudosyzygy and 
the second and third by syzygy ; or the IIBr series may be 
4 (3 -f 4) and the following series 3 (2 -j- 3), in which case 
the first brachial of the free arms (and the first ossicles of 
the IIIBr and following division series) bears a |)innule, and 
there is a syzygy between the second and third brachials; 
in the rare cases in which the division series are very irre- 
gular the occurrence of a pinnule on the first brachial is 
diagnostic Capillasterinae 
c" always more than 10 arms (except in the very young) ; some 
or all of the IIBr series 4 (3 + 4) ; following division series 
4 (3 -f- 4) or 2 ; the second brachial of the free arms bears 
the first pinnule, and there is a syzygy between the third 
and fourth ; in the rare cases in which all the division series 
are 2 the presence of a synarthry between the first and 
second brachials and of a syzygy between the third and 
fourth, and the presence of the first pinnule on the second, 
are diagnostic C o m a s t e r i n a e 
b' all the cirrus segments smooth, without dorsal processes ; rarely 
more than 10 arms; if there are 10 arms the ossicles of the IBr 
series and the first two brachials may be united either by synarthry 
SlBOGA-E.Kl'EDlTlf XI.1I /'. I 
