C. L. Edwards 
297 
Tentacles. — 35 have less and only 5 °/^^ more than the mode of 20. 
In one case, the largest adult, the tentacular ampullae have 25 branches. 
Anal papillae. — Indefinitely distributed in a majority of the specimens. 
Supporting rosettes or plates. — Are found in the wall of the sucker, near the 
end-plate of the pedicel. 
Rosettes with holes. — Average standard deviation in number of holes "5. 
Polian vesicles. — In the adult the standard deviation of the number of vesicles 
and branches (19'f)) is over twice tliat of the greatest length (8'4). In the young 
(6"1) it is slightly greater tlian that of the greatest length (5'4). 
Stone-canals. — The standard deviations of the various characters increase in 
the following order: — Adult, number, right (TO), average length (2'2), greatest 
length (3'8), number, left (9"0), total (15"0): — Young, number, left (r6), average 
length (1-7), greatest length (I'V), number, right (S'S), total (4-8). 
LITERATURE CITED. 
Bedford, F. P., 1899. Holothurians. A. Willey's Zool. Results, (2), pi. 17, pp. 141—1.50, Jan. 
. 1899 a. Report on the Holothurians collected by Mr J. Stanley Gardiner at Funafuti 
and Roturna. P. Zool. Soc, Lond., 1898, pp. 834 -848, pis. 52, 53, Apr. 1. 
Bell, F. Jeffr., 1884. Echinodermata in : Report on the Zoological Collections made in the 
Indo-Pacific Ocean, during the voyage of H.M.S. "Alert," 1881—82, pp. 117—152, 509—511, 
pi. 9, Lond. 
. 1886. On the Holothurians of the Mergui Archipelago. J. Linn. Soc. Zool. v. 21, 
pp. 25-28, pi. 2. 
. 1887. The Echinoderm Fauna of the Island of Ceylon. Scient. Ti-. Roy. Dubl. Soc. v. 3, 
pp. 643—658, pis. 39, 40, Dublin. 
. 1888. Echinoderm Fauna of the Bay of Bengal. Proceed. Zool. Soc. of London. 
Brandt, Joh. Frid., 1835. Prodromus dcscriptionis animaliuni ab H. Mertensio observatorum. 
Ease. 1. Petropoli, 4, 1835. 
Chamisso, Adalb. de & Eysenhardt, C, 1821. De animalibus quibusdam e classe vermium 
linneana, in circumnavigatione terrae, auspicante Comite N. Romanzoft' duce Ottone de 
Kotzebue, annis 1815 — 1818 peracta, observatis. Ease. 2. Nov. Act. Acad. Caes. Leo- 
poldino Carol, nat. curios, v. 10, pp. 345 — 374, tab. 24 — 33, Bonnae. 
Clark, H. L., 1899. Further notes on the Echinoderms of Bermuda. Ann. N. York Ac. v. 12, 
pp. 117—138, pi. 4, July 7. 
• . 1901. Synopses of North- American Invertebrates. 15 : — The Holothurioidea. Am. 
Naturalist, v. 3.5, pp. 479—496, 27 text figs. June. 
. 1901a. The Echinoderms of Porto Rico. Bull. U. S. Fish Comm. v. 2, pp. 231— 263, 
pis. 14-17. 
. 1902. Papers from the Hopkins Stanford Galapagos Expedition, 1898—99. 12 :— 
Echinodermata. Proc. Wash. Acad. v. 4, pp. 521 — 531, Sept. 30. 
Davenport, C. B., 1904. Statistical Methods with Special Reference to Biological Variation. 
pp. I— vin. 223, 2d. Ed. N. Y. 
DuBEN, M. W. VON & KoREN, J., 1844. Om Holothuriernas Hudskclett. K. Vet. Akad. Handl., 
pp. 211—228, tab. 4, 5, Stockholm, 
Biometrika vi 38 
