16 McMURRICH 



Haddoii. Carlgren's Isotealia ('99) must be allowed to stand 

 for the present on account of the imperfect information in our 

 possession concerning Hertwig's LeioteaHa ('82) with which it is 

 possibly identical, and Haddon's Ixalactis ('98) and Klunzinger's 

 Thelactis ('77) will also stand as somewhat aberrant members of 

 the family though it must be confessed that at present we are 

 entirely in the dark as to the true systematic position of The- 

 lactis as we are also to that of Physactis Verrill ('69), the last 

 named genus being quite probably really an Aliciid, somewhat 

 similar to Haddon's A. jliadina ('98). The genus Epiactis 

 (Verrill '69) is considered further on. 



Finally there remain to be considered Pseudophellia Verrill 

 ('99), Tealiopsis Danielssen f90) and Epigonactis Verrill ('99). 

 Danielssen refers his Tealiopsis polaris to R. Hertwig's Tealidae 

 without however giving any definite evidence of its possessing the 

 qualifications necessary for admission to that family ; it may 

 possess a circumscribed endodermal sphincter but neither in the 

 text nor figures is there any indication of the existence of such a 

 structure. If it does occur, then there seems to me a probability 

 of Verrill's Pseudophelha being identical with Teahopsis ; it is im- 

 possible at present to speak with certainty on this point, however. 

 Verrill's Epigonactis was established quite recently ('99) for two 

 species which closely resemble each other and are not a little sug- 

 gestive of Urticina crassiconiis from which they are distinguished 

 however by possessing on the surface of the column depressions 

 which serve as "brood-pouches." With regard to the systema- 

 tic value of this peculiarity I am exceedingly sceptical and be- 

 lieve that judgment on the admissibility of the genus must be 

 suspended until a more detailed description accompanied with 

 figures showing the structural details has appeared. 



My v^iews as to the relationships of the various genera men- 

 tioned above may be briefly expressed thus : 



Cribrina, Ehr. — Synonyms, Bunodes Gosse, Evactis Verrill, 

 Bunodactis Verrill, Bunodella Verrill. 



Urticina, Ehr. — Synonyms, Tealia Gosse, possibly Epigonactis 

 Verrill. 



Anthopleura, Duch. & Mich, — Synonyms, Aulactinia Verrill, 

 ^geon Gosse, Bunodosoma Verrill. 



