File:Medusae of the world (1910) (14801782523).jpg

Identifier: medusaeofworld02mayo (find matches)
Title: Medusae of the world
Year: 1910 (1910s)
Authors: Mayor, Alfred Goldsborough, 1868-1922 Mayer, Alfred Goldsborough, 1868-1922
Subjects: Jellyfishes Cnidaria
Publisher: Washington, D.C., Carnegie institution of Washington
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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ases by a very shallow web. Gonothecae large and may arise singly from the hydrorhiza or from the stem. They are oblong, club-shaped, and slightly gibbous at one side near base. When set free, the medusa has 4 tentacles. Height of hydroid ( ?) It invests the surface of Sertularian hydroids. Eucope picta Keferstein and Ehlers. Eucope picta, Keferstein und Ehlers, 1861, Zoolog. Beitrag., p. 88, taf. 13, fign. II, 12. Eucopium pictum +Eucopium primordiale, Haeckel, 1879, Syst. der Mcdusen, p. 168, taf. 11, fign. 1-3. Bell globular, founded, or hemispherical, about I mm. wide. 4 radially placed tentacleswith well-developed, conical basal bulbs. 8 adradial lithocysts, each with a single concretion.4 slender radial-canals. Velum well-developed. Manubrium 4-sided, one-fourth to half as longas depth of bell-cavity. 4 sac-like gonads from middle to upper thirds of the 4 radial-canals. Tentacle-bulbs, stomach, and gonads yellowish or brownish-yellow. Found at Messina and Corsica, Mediterranean.
Text Appearing After Image:
Fig. 12?..—Eucope picta (£. primordiale).Fig. 123.—Europe dissonema (Saphenella dissonema).Above figures after Haeckel, 1879. Haeckel considers his Eucopium primordiale to be distinct from Eucope picta of Kefer-stein and Ehlers, basing his distinction upon its larger gonads, flatter bell, and longer ten-tacles, but the general resemblance between the two forms is so close that I am inclined toconsider them one and the same species in somewhat different stages of development. Haeckelobtained his medusae from a Clytia-like hydroid resembling Clytta phnstoni. The goblet-shaped, ringed gonangia arise between the hydranths from a creeping hydrorhiza, and eachgonangium contains 8 to 11 medusae. The hydranths are mounted upon long pedicels.Haeckel proposes to call this hydroid Clytia eucophora, but its specific name should be iden-tical with that of its medusa. LEPTOMEDUS.E—EUCOPE. 237 Eucope dissonema.Saphenella dissonema, Haeckel, 1879, Syst. der Medusen, p. 169, taf. II, fig. 5. Be

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