CCELENTEllATA. 
633 
entirety, and yet it is too condensed to give a fair abstract 
of it. 
Van Beneden, in treating of the development of the Hy- 
drozoa, applies the name teleon to the sexual Medusoid form 
(gonophore, Allman) and atrophion to the form where it does 
not become detached from the gonosome, and makes the fol- 
lowing four divisions (/. c. p. 50) ; — 
I. Atrophion complete {Hydractinia echinata, auct., Cordylophoraj Alim., 
&c.). 
i hotli sexes Tuhvlaria indivisa, Sic. 
male sex only . . Eudendriimi ramosum, V. B., &c. 
female sex only. . Podocoryne camea, Sars, &c. 
( both sexes Campmmlaria yelatinosa^ &c. 
male sex Coryne mirahilis, Agassiz, Sic. 
female sex Eudendriimi ramosum^ V. B., &c. 
IV. T^^onj^nplete. | Busch, Thamnantias, Geryonia^ Sic* 
CoRYNIDiE. 
A. Agasstz (1. c. p. 183) proposes tlio formation of a now family, Ortho- 
c,orynid(c, for the genera Zanclco., Corymiis, Gcmmaria, and CandcUdirum. 
Hincks {1. c. p. 299) records the occurrence of Clava leptostyla (Ag.) on the 
British coast (Morecamhe Bay). 
Cordylophora lacustris (Alim.). Van Beneden (1. c. p. 124) mentions that if 
the basal portion of one of the branches of this hydrozoon be cut off, in a short 
time a polyp-head will be developed from the cut extremity (vide woodcut, 
p. 125). 
Eudendrium pudicum (S. Wright) is described and figured by Van Beneden 
(1. c. p. 116, pi. 8. figs. 1, 2). He believes that the tentacles are arranged 
exactly as in the Campanularians, and that this species cannot be referred to 
Trichydra as is done by Wright. 
Einema slahheri is described and figured by Van Beneden {1. c. p. 130, 
pis. 9 & 10). 
Van Beneden (1. o. p. 106, pi. 4) also describes Tubidaria coronaia as oc- 
curring on the Belgian coast. 
Cladonema radiatum (I)uj.) is described and figured by Van Beneden, 1. c. 
p. 139, pi. 12. 
Hyhocodon (Agass. 1862). This name will probably have to give place to 
Eiplonema (Greene, 1867). 
New species : — 
Coryne vermicnlaris, Hincks, 1. c. p. 296, Shetland, in deep water. 
Syncoryna pimlla, Van Beneden, 1. c. p. 119, pi. 5. fig. 4, S. johnstonii, 
Van B. 1. c. p. 120, pi. 6. figs. 1-3, and S. lovenii, Van B. 1. c. p. 121. 
Hydractinia mlitaria, Van B. 1. c. p. 136, pi. 11. figs. 9-11, TI. temdssima, 
Van Br 1. c. p. 137, and II. incerta, Van B. 1. c. p. .138. 
Tuhidaria duniortierii, Van Beneden, 1. c. p. 111. 
Eudendrium ramosum, Van Beneden, 1. c. p. 112, pis. 6 Si 7. 
Eudendrium tenue, A. Agassiz, 1. c. p. 160, fig. 250, Nahant. 
Dysmorphosa fidgurans, A. Agassiz, 1. c. p. 163, figs. 269-260, Nahant. 
Euphysa virgidata, A. Agassiz, 1. c. p. 189, figs. 316-319, Nahant. 
Euphysa mediterranea, Haeck. /. c. p. 338. Medusoid. 
