588 IHE AMERICAN NATURALIST. [VoL. XXXV, 
Eucheilota ventricularis McCr. 
Bell of medusa hemispherical; radial canals four, wide and with the 
gonads extending their entire length ; marginal tentacles twelve to twenty 
in mature specimens, only four at liberation of medusa; manubrium short, 
tubular, of yellowish color with reddish central portion; gonads similar in 
color ; otocysts eight, with lithocysts arranged in an arc. Hydroid (?). 
Eu. duodecimalis A. Ag. (FIG. 52). 
Medusa similar to preceding species, but with twelve otocysts and with 
only four long tentacles, each with a pair of lateral cirri atthe base; gonads 
borne on distal half of radial canals. Hydroid (?). 
Clytia bicophora Ag. (FIG. 53). 
Medusa variable in appearance with age; when first liberated, the bell is 
rather globular, later becoming flattened and finally at maturity being hemi- 
spherical; diameter about five mm. ; radial canals four, beneath which the 
gonads, which are dull brown in color, extend from 
base of the short manubrium about to their middle 
portion; marginal tentacles eight, with intermediate 
tenta i ydroid, — Jbid. / & 
entacular buds; otocysts eight. Hydroid, — 75a. dikrvs 
¢ ITPA = 
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FIG. 54 
Fic. 52. 
Fic. 52. — Eucheilota duodecimalis A. Ag. (After A. Agassiz.) 
Fic. 53. — Clytia bicoph . (After A. Agassiz.) 
Fic. 54. — Tima formosa Ag. (After A. Agassiz.) 
C. nolliformis McCr. 
Medusa much as in preceding; marginal tentacles four in young T 
mens, increasing in number with age; otocysts eight, between bases 9 
tentacles; manubrium short and with four orallobes. Hydroid (?). 
Tima formosa Ag. (FiG. 54). 
Medusa bell-shaped or elongate hemispherical; marginal wena 
numerous, long, filamentous, and with bulbous bases; radial canals s 
and with convoluted, pouchlike gonads extending their entire length; 
