. Introduction to zoology; a guide to the study of animals, for the use of secondary schools;. FIG. 199. — Zygodactyla. Reduced. From a drawing by A. Ajjassiz. gonophores are encased in a cuticular capsule, but in theTubularidse they are quite naked. There are certain hydromedusre in which the hydroidstage is unknown or known to be lacking. Here belongsome jelly-fishes of large size, like Zygodactyla, one of theTrachomedusse of our coast, which may become eight toten inches in diameter (Fig. 199). Besides these the seacontains many small species, which are easily captured inthe net, and which
. Introduction to zoology; a guide to the study of animals, for the use of secondary schools;. FIG. 199. — Zygodactyla. Reduced. From a drawing by A. Ajjassiz. gonophores are encased in a cuticular capsule, but in theTubularidse they are quite naked. There are certain hydromedusre in which the hydroidstage is unknown or known to be lacking. Here belongsome jelly-fishes of large size, like Zygodactyla, one of theTrachomedusse of our coast, which may become eight toten inches in diameter (Fig. 199). Besides these the seacontains many small species, which are easily captured inthe net, and which are of extreme beauty and delicacy. Besides the Hydromedusre, the group of Hydrozoa in-cludes the These animals are alwayscolonial and free-swimming, and are among the most 1 0-/0WJ/, a siphon ; o/)6s, bearing. THE HYDRA AND ITS ALLIES 213 beautiful inhabitants of the sea. Those who have crossedthe Atlantic are acquainted with the Portuguese man-of- • FIG. 200. — Physalia size. After Agassiz. •net
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1900
