P achy cer iantbus torreyi n. sp.— A rax 
215 
Quatromere (Beneden, 1924:43 )• — four suc- 
cessive somatomeres (q.v.). 
S, ( Benede.ru 1897:20)-— cloison, i.e. mesentery, 
other than directive mesenteries. 
S with superscript (Beneden, 1923:25)— sarco- 
septum, i.e. mesentery. 
SarcosepMm (Haacke, 1879:277, 293)— mes- 
entery (q.v.). 
Sarcosepte antipathoide (Beneden, 1 92 3:18) — 
protomesentery ( q.v .). 
Sarcosepte ' cerianthoide ( Beneden, 1923:19) — 
metamesentery (q.v.). 
Schlundrinne (Hertwig and Hertwig, 1879: 
513, 572) — siphonoglyph (q.v.). 
Septum (Gosse, |860:xiii-xiv, 5, 268)-— mesen- 
tery (q.v.). 
Shaft (Garlgren, 1940:3) —thickened basal 
part of tube, of some nematocysts. 
Siphonoglyph (Hickson, 1883:693-694; Mc- 
Murrich, 1890:131, 136) — smooth ciliated 
groove of actinopharynx. 
Somatomere ( Beneden, 1923 : 2 1-22 ) — "seg- 
ment” of body including a couple of mesen- 
teries, the intermesenterial chambers 'ante- 
rior’ ter • them, and the associated tentacles 
and adjoining portions of columnar wall, 
peristome and actinopharynx (by analogy to 
Amphioxus ) . 
Spiral cnida (Gosse, 1858:126—127; I860: 
xxxiii-xxxiv; Weill, 1934:326) — spirocyst 
(q. v.). 
Spirocyst (Bedot, 1889:607-608; 1896:534— 
536; Weill, 1934:325-342, 624; Cuttress, 
1955:124-126, 136)— capsule containing an 
acidophilic, very regularly spiralled, tube of 
uniform diameter which irregularly everts 
(cf. Holotiich ) 
Spiro cyst- glandular tract (Garlgren, 1912*: 60- 
67)- — telocraspedon and histologically simi- 
lar medial tract of trineme. 
Spimla (Stephenson, 1929:179; Weill, 1934: 
91-92)— nematocyst containing long slender 
tube with enlarged or armed basal portion 
(not in present use). 
Stomatodaeum ( McMurrich, 1890: 136) — ac- 
tinopharynx (q.v.). 
Stomodaeum ( Bourne, 1900 : 7, 51)— actino- 
pharynx (q.v.). 
Sulculus (Haddon, 1889:300) — siphonoglyph 
other than the sulcus of Actiniaria (q.v .) . 
Sulculus (Garlgren, 1912*: 55-56) — siphono- 
glyph of Ceriantharia if considered homolo- 
gous to sulculus of Actiniaria (q.v.). 
Sulcus (Haddon, 1889:300)— ventral siphono- 
glyph of Actinaria, i.e. that one homologous 
to single siphonoglyph of Peachia. 
Sulcus (Kingsley, 1904:347-351; Torelli, I960: 
383) siphonoglyph of Ceriantharia if con- 
sidered homologous to sulcus of Actiniaria 
(q. v.). 
t (Beneden, 1897: 10— 11 )— labial tentacle 
other than directive tentacle. 
t (Beneden, 1923:23)— labial directive tenta- 
cle (q.v.). 
t with superscript (Beneden, 1923:23) — labial 
tentacle other than directive tentacle. 
T (Beneden, 1897 : 10-11 )— marginal tentacle 
other than directive tentacle. 
T (Beneden, 1923:23,)— median marginal ten- 
tacle, i.e. marginal directive tentacle. 
T. with superscript (Beneden, 1923:23) — mar- 
ginal tentacle other than directive tentacle. 
T.M. (Beneden, 1897: 10-11 ) —median mar- 
ginal tentacle, i.e. marginal directive tentacle. 
Telocneme (McMurrich, 1910:11-13) — con- 
tinuous mesentery (q.v.). 
Telocraspedon (Bourne, 1919: 55-57) —por- 
tion of mononeme indistinctly delimited by 
abundance of spirocysts and eosinophilous 
mucus gland cells, usually posterior to plec- 
tocraspedon. 
Telomere (Beneden, 1923:22) — "segment” of 
body including multipication chamber (by 
analogy to Amphioxus ) . 
Terminal tube (Weill, 1934:26, 37) — thin dis- 
tal part of tube, in some nematocysts. 
Thread (Gosse, 1858:126; 1 860 : xxix-xxxiv ) 
—tube of nematocyst (q.v.) . 
Thread (Garlgren, 1940:3) — terminal tube of 
nematocyst or entire tube of thickened basal 
portion is absent. 
Trineme (Beneden, 1923:79-80) — adoral tri- 
filar region of mesenterial filament. 
Tube (Weill, 1934:21-22, 36-38)— eversible 
hollow structure coiled within capsule of 
nematocyst. 
