helonginrj to the Family Laodiceidre. 469 



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

 organs are also absent, and therefore the medusa is not a 

 Laodice. Wiiether it is a Thaumantias or not depends upon 

 tlie result of a revision of the Thaumantidae and Eucopidai. 

 Thaumantias reUidaria inhabits Piifjet Sound and the straits 

 between Vancouver Island and British ('ulunibia. 



Laodice Chapmani, Gunther, 1903, p. 42,5, pi. ix. figs. ]-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 Laodiceida?. The 

 description is based ujjon a single specimen found in the 

 Morth Atlantic. 



Laodice nepiuna, Mayer, 1900, ]). 48, pi. xx. figs. 50-52, 



This medusa was found at the Tortugas, off the coast o£ 

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

 who does not mention the existence of cordyli ; consequently 

 I exclude it from the Laodiceidre. 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'HORA, Brandt, 1S35. 



Sfdurophora, ILeckel, 1879. 

 Staurostoma, Iljeckel, 1879. 



Generic character. — Laodiceidte witii four radial canals; 

 with a narrow cross-shaped stomach and mouth extending 

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

 tentacles. 



Although Brandt established the genus Staurophora, it was 

 Louis Agassiz who, in his description of lStauroj>hora laciii/ata, 

 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 cordyliis, 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. 



llajckel has certainly misinterpreted Brandt's figures of 

 Staurophora in considering the lobes of the stomach to be 

 blind lateral branches of tlie radial canals; hence his ])Lacing 

 Staurophora in the family Cannotida?. 'i'his error led to his 

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

 which was placed amongst the Thaumantidte. llartlaub and 



