116 THE ROYAL SOCIETY OF CANADA 



Gonosome. — Unknown. 



Distribution. — San Juan Archipelago (Fraser). 



In working up the material for my west coast paper I found 

 some specimens from San Juan Archipelago which I believed belong 

 to this species. I have not these at hand now nor have I obtained 

 others, hence I have given Torrey's original description and have 

 also shown his figures. 



Genus GARVEIA 



Trophosome. — Colony branched or unbranched; perisarc con- 

 spicuous reaching well up on the fusiform hydranth. 



Gonosome. — Gonophores borne on distinct branch-like pedicels. 

 The sporosacs may be temporarily enclosed in thin perisarc but this 

 bursts off in the later stages so that the perisarc is confined to the 

 pedicels where it usually ends in a cup-like expansion. 



Torrey combined the genus Garveia with Bimeria under the name 

 Bimeria. He gave as his reason that in Garveia annulata Nutting 

 he found cases where there was a perisarc envelope over the sporosac 

 which resembled to some extent the perisarc envelope in Bimeria 

 and since the difference in the envelope is one of the diagnostic points 

 of difference he thinks that the genera should not be separated. 



There is no doubt that in the early stages of the development of 

 the sporosacs there is such an envelope that soon ruptures and leaves 

 the cup-like expansion of perisarc below the sporosac, but Torrey 

 cites no instance where the envelope of the sporosac of a Bimeria 

 ruptures in this way. Instead of doing so it remains thick until the 

 contents have matured. 



Levinsen observed the breaking down of the thin perisarcal 

 covering in the sporosac of Garveia grœnlandica 9 and Allman indicates 

 that something like that has taken place in his drawing of Garveia 

 nutans. 10 Torrey minimizes the differences between the pedicels 

 of the gonophores in the two genera. In general appearance there is 

 not much resemblance. In the case of the perisarc on the hydranth 

 there may be a gradation shown in G. annulata but in the great ma- 

 jority of cases the perisarc appears to be confined to the base of the 

 hydranth. Taking all these points into consideration I am of the 

 opinion that it is more satisfactory to keep the two genera separate. 



Key to species of Garveia found in the Vancouver I. region. 



A. Stem fascicled, branches and pedicels stout G. annulata 



B. Stem simple, pedicel slender G. grœnlandica 



9 Méduser, Ctenophorer og-ydroider fra Groenlands Vestkyst, 1893, p. 155. 



10 Ray Society, 1871. 



