Vou. 2] Torrey.—Hydroids of the San Diego Region. 7 
Gen. Bougainvillia, Lesson, 1836. 
2. Bougainvillia glorietta, n. sp. 
Trophosome. Stems branched, rising from a creeping hydrorhiza in 
clusters to the height of 20 to 30 em. Stems, or stem and branches fre- 
quently twine about each other. Perisare smooth, without annulae, ocea- 
sionally wavy, unusually adhesive, covered with particles of dirt and diat- 
oms, reaching bases of tentacles. Terminal hydranths largest, with 20 
to 25 tentacles carried in two or three irregular whorls, the outermost 
shortest. Tentacles highly contractile, held stiffly when at rest. 
Gonosome. Gonophores each on a short pedicel, in groups of two or 
three on branches or hydranth stalks. 
\ 
\\ 
Ny 
NY 
/ 
Fig. 2.—Bougainvillia glorietta. Fig. 3.—B. glorietta. 
Hydranth from below. Hydranth with tentacles 
partly retracted; edge of 
perisare visible. 
Distribution. San Diego Bay, Cal. 
This is the second species of the genus to be found on this 
coast. The first was collected in San Francisco Bay by A. Agas- 
siz (’65) and referred to B. mertensi. It was taken again by 
myself in Oakland Harbor, Cal., and is mentioned in a footnote 
on p. 1 of my former paper (:02). The present species resembles 
B. superciliaris, yet differs in lacking annulae in the perisare 
and in the twining habit of stem and branches. Medusae with 
4 pairs of tentacles, 4 simple mouth processes and 8 ocelli were 
still within the perisare, July 5, 1903. 
