IgI0. | J. RircuHiE: Hydroids of the Indian Museum. 5 
species are untrustworthy, and that the two forms are specifically 
identical. Nor is there any point by which Lafoéa magna, Warren 
(1908, p. 343), can be separated from Miss Thornely’s species. 
These names therefore, Lafoéa magna, Warren, and C. mutabilis, 
Ritchie, must be regarded as synonyms of C. corrugata, Thornely. 
Locality : Climbing on /dia pristis obtained by the R.I.M.S. 
‘“ Investigator ,’’ at Station 312, lat. 16° 56’ 15” N., long. 92° 35’ 
00” E. (off Lower Burma) ; depth 1,343 fathoms. 
Distribution.—Recorded from the Indian Ocean: Ceylon 
(Thornely, 1904), Madagascar (Billard, 1907 (2) ), Natal (Warren, 
1908) ; and from the tropical Atlantic: Cape Verde Islands (Ritchie, 
1907 (2) ). 
C. corrugata has been found at other localities from which, 
however, it has not been recorded as such. Armstrong (1879, 
p. 101, pl. xi) figures what is undoubtedly a colony of this species 
climbing over Halicornaria plumosa, and he describes the hydro- 
theca as the gonosome of the Plumularian. His specimens were 
found in ‘‘ 30 to 40 fathoms, Cape Comorin, S. of India, and in ro 
to 15 fathoms, off Cheduba Island, coast of Arrakan.’’ Campen- 
hausen (1896, pl. xv, fig. 3) figures, without mentioning, hydrothecee 
of this species on an unidentified Plumularian (apparently Hali- 
cornaria grvactlicaulis (Jaderholm) ) which was found in the littoral 
zone off Ternate. ‘This occurrence extends the distribution of 
C. corrugata into the South Pacific. 
) 
Campanularnia (2) spinulosa, Bale. 
Bale, W. M., 1888, p. 756, pl. xii, figs. 5—7. 
Two minute colonies, each 6 mm. high, have been assigned to 
this species. The stem of one shows a trace of fasciculation of the 
type figured by Bale for this species, an offshoot from the base of 
one of the branches growing downwards along the original stem. 
The hydrothece are exceedingly delicate and have in most cases 
collapsed so completely that the character of the margin is altogether 
obscured. In the cases where the bicuspid teeth were visible they 
seemed to be somewhat less pointed than in Bale’s figure. The 
pedicels taper slightly upwards and are generally annulated through- 
out, bearing from 6 to 16 rings ; but sometimes a long pedicel occurs 
with rings only at top and bottom. The hydranth has about 14 
long tentacles. 
Measurements. 
Hydrotheca, length a .. 077—0°84 mm. 
Ls diameter ae *, OIZCI, 
Stem, diameter of single tube . O13 6835 
As it is impossible in the absence of the gonosome to determine 
with precision the generic position of this species, I have retained 
for it the name given it by Bale. It seems probable, however, 
that it is either an Obelia or a Gonothyrea, for its trophosome is 
scarcely distinguishable from that of gonosome-bearing specimens 
