helonging to the Family Laodiceidse. 469 



is said about sensory clubs, it may be presumed that these 

 orf^ans are also absent, and therefore the medusa is not a 

 Laodice. Whether it is a Thaumantias or not depends upon 

 the result of a revision of tlie Thaumantidse and Eucopidse. 

 Thaumantias celhdaria inhabits Pu^jet Sound and the straits 

 between Vancouver Island and British Columbia. 



Laodice Chapmani, Giinther, 1903, p. 425, pi. ix. figs. 1-3. 



Maas has already expressed an opinion that this species is 

 not a Laodice. It certainly does not look like one, and the 

 absence of cordyli excludes it from the Laodiceidae. The 

 description is based upon a single specimen found in the 

 North Atlantic. 



Laodice neptuna, Mayer, 1900, p. 48, pi, xx. figs. 50-52. 



This medusa was found at the Tortugas, off the coast of 

 Florida. It has been well described and figured by Mayer, 

 who does not mention the existence of cordyli ; consequently 

 I exclude it from the Laodiceidae. In general appearance 

 this medusa does not look like a Laodice^ but more like a 

 medusa belonging to another family at an intermediate stage 

 in development. 



Genus Stauroi'iiora, Brandt, 1835. 



Sluurojjhora, Hseckel, 1879. 

 ^taurostoma, Hseckel, 1879. 



Generic character. — Laodiceidae with four radial canals; 

 with a narrow cross-shaped stomach and mouth extending 

 across the subumbrella ; with ocelli on the basal bulbs of the 

 tentacles. 



Although Brandt established the genus Stauro^yhor a, it was 

 Louis Agassiz who, in his description of Staurophora laciniata, 

 first gave an accurate account of a Staurophora^ and clearly 

 demonstrated the existence of a mouth and stomach. One 

 of his figures shows distinctly a cordylus, though no mention 

 is made of this organ in the description. Agassiz was per- 

 fectly right in associating his species with Brandt's genus 

 Staurophora. 



Hjeckel has certaiidy misinterpreted Brandt's figures of 

 Staurophora in considering the lobes of the stomach to be 

 blind lateral branches of the radial canals ; hence his placing 

 Staurophora in the family Cannotldse. This error led to his 

 introducing a new genus, Staurostoma, for Agassiz's species, 

 which was placed amongst the Thaumantidaj. llartlaub and 



