288 



T. A. STEPHENSON 



Phyllactidae with no marginal acrorhagi or fosse, but with six, or 

 four to eight hollow outgrowths just below the margin, these at best 

 forming large and complicated bunches or ' pseudotentacles '. They 

 vary as to detail, but are dichotomous in their early branchings ; there 

 is usually some development of nematocysts on them, these latter being 

 sfjinetimos definitely concentrated into acrorfiagi on the pseudoten- 

 tacles, which may differ in colour fi(jm the rest of the pseudotentacles. 

 No sphincter. Tentacles not retractile. Retractors diffuse. Mesenteries 

 may be all fertile, save perhaps the directives. 

 Species : 



L. danae, 1). and M., 1860. p. 47. (Sec Pax, 11»10, p. 2U!J ; 

 McMurrich, 1881t, ' Journ. Morph.', p. 31, &c. ; Verrill, ' Trans, 

 Connect. Acad.', x ; Verrill, 189!) ; McMurrich, IWo.) 

 L. ueglecta, D. and M., 1860, p. 4:8. (See same references as 



for L. danae.) 

 ?L. coralligens, Wilson, 1890, p. 379. (See Haddon, 1898, 

 p. 437, and Ducrden, 1898, p. 456, and 1902.) 



Verrill consitlers L . danae and L . n e g 1 e c t a distinct 

 species because of the acrorhagi on the fronds of danae; 

 McMin-rich seems to think they run into each other. Duerden 

 thinks that Hoi)lopht)ria coralligens is a liebriinia. 



Family 7. Minyadidae, sens, strict. 



Minyadidae, Ai'.dres, as used by Haddon, ISllS, p. 408. 



Endomyaria (?) in which the base forms a float. It is hollowed out 

 and has in-drawn edges with onlj' a slight opening, the cax-ity being 

 filled by a chitinous mass which is porous and exhibits a more or less 

 definite structure. The body is smooth in the one form best known ; 

 it has forty tentacles, one siphonoglyphe, ten pairs of perfect mesenteries 

 with strong circumscribed to circumscribed-diffuse retractors, and ten 

 pairs of imperfect mesenteries ^vith more diffuse retractors. The endocoels 

 are larger than the exocoels, this giving a curious appearance to a traiLs- 

 verse section. Not more than one tentacle to each exo- and endocoel. 

 Sphincter endodermal — well-developed circumscribed according to 

 Carlgren, consisting only of a single fold according to Haddon. 



Genus : S t i c )] o p h o r a . 



Stichophora, Brandt, 1835. 



8. torpedo. Bell, 1885. p. 114. (Minyas torpedo.) 

 See above definition, and also Part II, p. 588, and Carlgren, 

 1894, p. 19, and Haddon, 1898, p. 4G5. 



