CALKINS: SOME HYDROIDS FROM PUGET SOUND. 349 
7. Campanularia johnstoni var. PI. 1, fig. 7. 
A minute form growing on Halecium wilsoni. Bell very deep, 
tapering gracefully from margin to base, proboscis trumpet-shaped, 
stem unbranched, annulated throughout the entire length or only 
0*7 
in part, and shorter than the bell. Tentacles 10-14. Gonotheca 
not present. 
Dimensions. Length of stem, 1 mm.; length of liydrotheca, 
.6 mm.; width at top, 3 mm.; number of teeth on hydrotheca, 9. 
1 find only four specimens of this delicate form and no gono- 
Ph ores. It is very small for G. johnstoni , but comes nearest this 
species and may be classed with it provisionally. 
8. Campanularia inconspicua (Forbes). PI. 2, figs. 8, 8a, 
8b, 8c. PI. 6, fig. 8 d. 
Trophosom.e. Stems short and simple or branched once, arising 
at irregular intervals from a creeping stolon. Much ringed, 12-13 
at base and 4-5 or more below theca. Hydrotheca deep with slight 
taper towards the base. Margin of bell ornamented with seven 
large, rounded teeth. 
Gonosome. Gonophores borne on short ringed stem which grad¬ 
ually enlarges from stolon to base of gonotheca. Gonotheca large, 
borne on stolon, widening gradually from base to apex, and with 
large irregular aperture situated at the wide extremity. Bears four 
medusae-buds on the blastostyle. The older medusae with tentacles. 
Diaphragm a simple partition with down-turned edge at the aper¬ 
ture. The hydranth rests upon an elevated annular ridge near the 
outer edge of the diaphragm, and the basal chamber is a part of 
the stem cavity (PI. 6, fig. 8d) . 
Dimensions. Height of hydrocaulus, 6-8 mm.; length of 
hydrotheca, .6-65 mm.; length of gonotheca, 1.3 mm.; width of 
gonotheca at apex, .35 mm. 
I place this species with Forbes’s Thaumantias inconspicua 
because of the small number of large teeth. Tt differs from C. rari- 
dentata , which I take to be a synonym, in some respects, notably in 
its smaller size, in the absence of “bulbous swelling” at the base of 
the stem, and in the large number of annulations. A very noticeable 
character is the annular ridge on the diaphragm which, with the 
exception of the closely allied form described below, was not 
observed in any other hydroid. 
Habitat. Found on red algae near Port Townsend, also found 
in England (Alder and Hincks). 
