%93!'''] PROCEEDINGS OF THE NATIONAL MUSEUM. 135 



for the present with the AutlieatUe. My reasons for ])hieiiij>the Phyllac- 

 tid;e among the A<*-tiiiinie have been j>iven in another place ('.SOa). 

 Hertwij^'s I*olyopidie and Sicyonid.e I have phiced in tlie Actiniiue, 

 not recogni/.ing" liis tiibe, J*aractiniir. These forms re(iuire further 

 study. The Liponemidie are too much open to suspicion to be accepted, 

 as will be seen from what is said in Part ii (joncerning Bolocera bre- 

 vicornis, Liponenia recalling strongly n Bolocera, while Polyslphonia re- 

 calls Aetinernus. 



Under the Sagartidaj is included tlie Phellidae, which may be re- 

 garded as a subfamily ur)der ITaddon's name of Chondractiniuic, and 

 the Ampliiaiithidic, which are probal)ly all referable to the Sagartidie 

 and to the subfamily Chondractinin;e. 



The Minyadte are inserted with the Actinime as a family, but little 

 is as yet known of their anatomical peculiarities. 



The classification of the Stichodactylinse hardly calls for comment, 

 except to point out that, of the Aurelianidie and Criptodendridte very 

 little is known, nothing indeed as to anatomical characters. I have 

 employed the form of the tentacles, following Andres with modifica- 

 tions, as a basis for the classification; but in those groups members of 

 which have been studied it has been found that more or less definite 

 anatomical features are associated with the various tentacular modifi- 

 cations. 



This classification is, it must be understood, intended to be purely 

 tentative and to take (cognizance only of families which seem well 

 authenticated. No doubt the changes and additions which will be 

 required to inake it at all accurate are numerous — how numerous 

 future observation will determine. 



Part II. 



DESCRIPTIVE. 



Tribe EDWARDSI^, Hertwig. 



Actinozoa not forming colonies ; with eight mesenteries, three of which 

 on each side have their longitudinal muscles uj)on their sulcar faces, 

 while the other two, situated at the sulcar surface, have these muscles 

 on their sulcular faces. Tentacles simple, usually more numerous than 

 the mesenteries. 



Geiins EDWARDSIA, ^uutrefages. 

 With the characters of the tribe. 



I do not consider it necessary at juesent to divide the Edwardsias 

 which we know into two genera, as Andres ('83) has done, much less 

 to make the number of the tentacles the feature ui)on which to base 

 such a division, since this is a character liable, to judge from the de- 

 scriptions of s])ecies which we possess, to numerous gradations. When 

 a thorough ilnatomical study has been made of a number of ditterent 



