16 CTENOPHORES OF THE ATLANTIC COAST OF NORTH AMERICA 
inner end of the stomodeum contains dull-yellow and reddish-brown 
pigment. The 2 tentacle-bases are closely pressed to the sides of the 
paragastric canals. Their lower ends are simple, not hooked, and extend 
slightly below the level of the lower ends of the 8 meridional vessels. 
The tentacle-sheaths are voluminous and long, and taper upward so 
as to open to the outside slightly below the level of the aboral ends 
of the rows of combs. The tentacles bear a pair of cock’s-comb-shaped 
expansions upon the upper sides of their bases. They also give rise to 
numerous, simple, filamentous side branches and a few more or less 
hand-shaped appendages at very irregular intervals. The side branches 
of the tentacles are slightly yellow. The canal-system and other parts of 
the entoderm of the animal are slightly milky, other parts being trans- 
parent. 
This ctenophore is not common either in the Mediterranean or at 
Tortugas, Florida. It is beautifully figured by Chun, 1880, in his Naples 
Monograph of the Mediterranean Ctenophore. 
Genus TINERFE Chun, sens. ampl. 
Ute, CHUN, 1889, Sitzungsber. Akad. Wissen., Berlin, Jahrg., 1889, p. 525. 
Ute, preoccupied by Schmidt for Sponges. 
Tinerfe, CHUN, 1898, Ergeb. der Plankton-Exped., p. 6.— Moser, 1909, Cteno- 
phoren der deutsche etdpalarBapedition, Bd. 11, Zool. 3, p. 131. 
Chun defines this genus of the Cydippide as follows: 
Body cylindrical, only slightly compressed in the stomodeal plane. 
Two kidney-shaped, gelatinous protuberances project above the apical 
sense-organ in the funnel-plane. Paragastric vessels well developed. 
‘Tentacle-bases long. Genital products developed only in the 4 subten- 
tacular meridional vessels. 
The generic designation cited above applies to two small Ctenophore 
from Tortugas, Florida, with the exception that the gelatinous swellings 
flanking the sense-organ are mammiform in one and papilliform in the 
other species, not kidney-shaped, and the genital products are developed 
in all of the 8 meridional vessels. Also the tentacle bases of one species 
are short, not long. We might profitably amplify Chun’s definition of 
the genus and avoid stating the precise shape of the protuberances on the 
sides of the apical sense-organ, and omit the restriction that the genital 
products develop in only 4 of the meridional vessels, for this is probably 
only an indication of immaturity; or that the tentacle-bulbs be either 
long or short. 
We would thus amplify Chun’s definition to read as follows: Cydip- 
pide with nearly cylindrical body, only slightly compressed in the stomo- 
deal-axis. With protuberances in the funnel-plane on both sides of the 
apical sense-organ. Paragastric canals well developed. Tentacles sunken 
within sheaths in the funnel axis. Tentacles with lateral filaments. 
Chun’s Tinerfe cyanea from the Canary Islands is the smallest cteno- 
phore known, being only 2 to 2.5 mm. long when mature, The Tortugas 
forms, Tinerfe lactea and T. beehleri, are also very small, being only 
g mm. long. The type species is Timerfe cyanea Chun. 
