OBELIA STRIATA, 9 
Campanularia (?) obliqua, sp. nov. 
Plate 5, Figs. 7-4. 
Trophosome : — Hydrothecae with a full outline tapering but little toward 
the base, with a diaphragm on which rests the body of the hydranth; the 
margin has ten prominent teeth which do not point directly upward, but 
obliquely ; the peduncles are annulated at the base and immediately below 
the hydrotheca, and in one of the specimens there are a few annulations 
about the middle of the peduncle. The hydrorhiza consists of simple creep- 
ing tubes. 
Gonosome : — Not known. 
Halitat : — On a sertularian from Perico Island. 
This is a small creeping form with peduncles from 1 mm. to 11 mm. in 
height. In the annulation of the peduncles, the shape and number of teeth, 
this species is like C. gravieri Billard.’ It is distinguishable from the latter 
by the obliqueness of the teeth in odliqua and the crests of the teeth in 
graviert. 
This species is represented in the collection by a few specimens only, and 
the main reason for recognizing them as a species, aside from the marked 
peculiarity of the obliqueness of the teeth, is the hope that by calling atten- 
tion to them they may be watched for in any future collections from the 
region of Perico Island. 
Obelia striata, sp. nov. 
Plates 6 and 7. 
Trophosome : —Hydrocaulus rising from a creeping stolon, simple, clus- 
tered, eight to ten annulations at the base, seldom and very sparingly 
branched, annulated with numerous (12 to 16) rings immediately above the 
origin of each hydrotheca; five to eight annulations at the base of each 
hydrotheca. Hydrothecae pedunculate, alternately arranged, deeply cam- 
panulate, very hyaline, tapering to the base; a well-marked diaphragm 
defines a basal cavity ; the margin has a crenated edge forming about four- 
teen to sixteen teeth which have well-developed crests projecting inward ; 
the distal part is deeply fluted, producing a series of longitudinal striations 
that are about one third the length of the hydrothecae. 
1 Bulletin Muséum d’histoire naturelle, 1904, n° 7, p. 480. 
