THE CAMPANULAEID^ AND THE BONNEVIELLID^. 61 



parallel with the stem and attain a length of about 3 mm. There is usually a group of 3-5 

 annulations immediately below the hydro theca and a similar group of 5-10 annulations near 

 the base. The hydrothecse are deeply campanulate, less than twice as long as broad and have 

 the margin ornamented with a series of 10-12 deeply cut rounded teeth. The diaphragm is 

 well marked and basal chamber rather deep. The hydranth has a trumpet-shaped proboscis 

 and about 24 tentacles. 



Gonosome. — The gonangia are borne on the stem and basal portion of the pedicels. They 

 are of comparatively large size, oblong-ovoid in shape, and their walls are not annulated. There 

 is a large terminal aperture surrounded by a low band-like collar. Upon the blastostyle are 

 growing three to five developing medusse, the largest of which are orbicular in form and show 

 4 tentacles and an oval manubrium. 



Distribution. — Type-locahty, Port Townsend, Scow Bay, on red algse. Doctor Fraser has 

 also found specimens at Vancouver Island. 



CLYTIA MINDTA (Nutting). 



Plate 14, figs. 1-4. 



Campanularia minuta Nutting, Hydroids of Woods Hole Region, 1901, p. 345. 

 Clytia minuta Fraser, Notes on New England Hydroids, 1912, p. 44. 



Trophosome.^ — Colony about 6 mm. in height, branching in an irregular and straggUng 

 maimer, the stem giving rise to distant but irregularly spaced pedicels and being smooth for 

 the most part, but with compact groups of 6 or 8 annulations just above the pedicel insertions, 

 or at the basal end of each stem internode. The pedicels are quite variable in length but are 

 often three or four times as long as the hydrothecse, annulated throughout, diminishing gradually 

 in diameter toward their distal ends and bending abruptly upward near their bases as in the 

 preceding species. Occasionally the middle part of the pedicel is smooth with the distal and 

 proximal ends closely annulated. The hydrothecse are small, campanulate, not quite 1.5 times 

 as deep as wide and with about 7 very sharp rather distant teeth. The diaphragm is rather 

 low and the basal chamber of moderate size. 



Gonosome.^ — "The gonangium bears a strong resemblance to the gonangium of C. john- 

 stoni. It grows either from stolon or from the main stem. It is oval or obvate in shape and 

 has corrugations similar to that of C. johnstoni." 



Distribution. — Type-locality, Woods Hole, Massachusetts, where it was found growing on 

 old stems of an Ohelia. It has recently been reported again from the same locahty by Fraser 

 who found it growing on Eudendrium and Tubularia. 



The calyces of this species are much hke those of G. raridentata Alder, but the branching 

 and annulations of the pedicels are quite different from that species. 



CLYTIA UNIVERSITATIS (Torrey). 



Plate 14, figs. 5-6. 



Campanularia denticulata Torkey, Hydroida of PacificCoaat, 1902, p. 51. 

 Clytia univerdtatis Torrey, Hydroids of the San Diego Region, 1904, p. 19. 

 Clytia universitatis Fraser, West Coast Hydroids, 1911, p. 36. 



TropJiosome.^ — Colonies in bushy tufts, irregularly branched and attaining a length of 12 cm., 

 in my specimen, but Torrey states that they are sometimes 200 mm. in height. The stem and 

 main branches are fascicled, much as in Campanularia verticillata. Many of the branches are 

 long and erect and give off irregularly disposed pedicels from all sides, but not in regular whorls 

 as in Campanularia verticillata. The pedicels are rather long and slender, for a branched cam- 

 panularian, being about 2 mm. long in typical specimens. They are regularly aimulated 



1 Description of type colony collected at Woods Hole, Massachusetts, by the author. 



2 Description copied fi-om that of Fraser, Notes on New England Hydroids, 1912, p. 44. 



=> Description of specimens sent me by Doctor Torrey, labelled " San Diego Bay, July 15, 1904." 

 55968°— 15 5 



