CLASSIFICATION OF ACTINIARIA 279 



deiinitely fusing it up with Bunodactis is that the 

 existence of regular vertical rows of verrucae seems 

 uncertain, although both verrucae and acrorhagi are 

 present. Kegular vertical rows are extremely charac- 

 teristic of Bunodactis, but otherwise Gyractis 

 has the organization of that genus. 



Tealiopsis polaris, Dan., and Kylindrosactis elegans, 

 Dan., are, according to Garlgren's examination of the 

 original specimens, identical with Stomp hi a. Madoni- 

 ACTis lofotensis, Dan., seems to be a name covering 

 Tealia, Metridium, and Hormathia, and is 

 invalid. 



Family 5. Aliciidab, sens, strict. 



Aliciidae, Duerden +Phyllactidae, Andres, as used by 

 Haddon, 1898, pp. 433 and 435, both pro parte. 



Endoinyaria with definite base and more or less delicate tissues. The 

 column may be divided into a scapus with vesicles and a smooth capiti- 

 lum ; or the scapiis may be smooth and the vesicles occur where it joins 

 the capitulum, and somewhat higher up as well in some cases. The 

 form may be very changeable. Tentacles simple, variable, may be long, 

 their longitudinal musculatirre ectodermal. Ectodermal longitudinal 

 muscle may be present in actinopharynx and capitulum, also spirocysts 

 at least in the latter. Sphincter absent or feeble endodermal diffuse. 

 Not more than one tentacle to each exo- and endocoel. Mesenteries not 

 divided iiito macro- and mierocnemes. Only six pairs of mesenteries 

 perfect. 



Genera : Alicia, P li y 1 1 o d i s c u s . 



Alicia, Johns., 1861. 



Cladactis, Pane, J 868, not Cladactis, Verr., 1868. 



Aliciidae with delicate column capable of elongation, and divided into 

 scapus and capitulum. The scapus bears vesicles, varying in form and 

 in detail, but at least some of which are compound and stalked. Capitu- 

 lum naked, may have weak longitudinal muscle and spirocysts in its 

 ectoderm ; the muscle may also be present in the actinopharynx. 

 The vesicles have numerous sting-cells, which may be very large. 

 Margin may be tentaculate. Tentacles typically long and slender, 

 retractile. The six pairs of perfect mesenteries may be sterile. Retractors 

 not strong, diffuse. Sphincter absent or weak diffuse. 

 JfO. 262 X 



