Fig. 92. Bougainvillia; magnified. | Fig. 93. Hydrarium of Bougainvillia; magnified. |
 Fig. 94 |  Fig. 95 |
 Fig. 96 |  Fig. 97 |
| Figs. 94, 95, 96. Medusæ buds of Fig. 93, in differentdegrees of development. Fig. 97. Young Medusa just freed from the Hydroid; magnified. | |
Tubularia. (Tubularia Couthouyi Ag.)
There are several other Tubularians common in our waters which should not be passed over without mention, although as this little book is by no means intended as a complete text-book, but rather as a volume of hints for amateur collectors, we would avoid as much as possible encumbering it with many names, or with descriptions already given in more comprehensive works. This Tubularia is interesting, however, from the fact that the Medusæ buds are never freed from the stem, and do not develop into full-grown Jelly-fishes, but always remain abortive. [Fig. 98] represents one head of such a Hydroid with the Medusæ buds pendent from it in a thick cluster, while in [Fig. 99] we have a few of them sufficiently magnified to show that, though presenting the four chymiferous tubes, they are otherwise exceedingly simple in structure, as compared with the free Jelly-fishes.