BIBLIOGEAPtlY.^ 
Agassiz, L., Proc. Amer. Acad. Arts and Set., vol. ii., from May 1848 to May 1852, 1852, p. 269. 
Boston and Cambridge. 
Agassiz, A. and E. C., Seaside Studies in Xatural History. Marine animals of Massachusetts Bay. Eadiates, 
1865, pp. 95-101. Boston. 
Alder, J., Hotice of the Occurrence, on this coast, of a Holothurian (Cucumaria elongata) new to Britain. 
Trans. Tijneside Nat. Field-Cluh, 1858-60, vol. iv., 1860, pp. 43, 44, pi. ii. fig. 3. Newcastle-on-Tyne. 
Anderson, John, On an apparently Hew Form of Jlolothuria. Ann. and Mag. Nat. Hist, ser. 3, vol. ix., 
1862, pp. 189-191, pi. xi. 
Ascanius, leones Eeruni naturalium, ou figures enluminees d’histoire naturelle du Nord, v., 1805, pp. 5, 6, 
pis. xliv. and xlv. Copenhague. 
Ayres, O. Nf., A Series of Observations upon the Holothuridie. Proc. Boston Soc. Nat. Hist., vol. iv. 1851 to 
1854, 1854, pp. 5-7, 11-12, 2-5-26, 31-32, 35-37, 46-47, 52-55, 60-61, 63-64, 69-70, 73, 101-103, 
143-145, 207-208, 214-215, 243-246. Boston. 
* On Californian Echinodermata. Proc. Calif. Acad. Nat. Sci., 1855, vol. i. p. 68. 
Proc. Calif. Acad. Nat. Sci., vol. i., 1854-1857, second edition, 1873, pp. 71, 72. San Francisco. 
Barrett, L., Descriptions of four Hew Species of Echinodermata. Ann. and Mag. Nat. Hist., vol. xx., ser. 2, 
1857, p. 46, pi. iv. fig. 1. 
Barrois, Th., Catalogue des Crustaces podophtalmaires et des Echinodermes recueillis a Concarneau, 1882, 
pp. 47-57, pis. i.-iii. Lille. 
Baur, a., Beitrage zur Haturgeschichte der Synapta digitata. 3 Abhandl. Mit 8 Taf. Nova Acta Acad. 
CsRS. Z-cop.-Carol. , t. xxxi., 1864. Dresden. 
Bell, F. Jeffrey, Hotes on a Collection of Echinodermata from Australia. Proc. Linn. Soc. New South Wales, 
vol. ix., 1884, pp. 506, 507. 
Echinodermata in the Account of the Zoological Collections made during the Survey of H.M.S. 
“Alert” in the Straits of Magellan and on the coast of Patagonia. Proc. Zool. Soc. ZotzJ., January 4, 
1881, pp. 100, 101. 
On the genus Psolus and the Forms allied thereto. Proc. Zool. Soc. Lond., Hovember 14, 1882. 
pp. 641-650, pi. xlviii. 
Description of Hew Species. Proc. Zool. Soc. Lond., February 20, 1883, pp. 58-62, pi. xv. 
On the Spicules of Cucumaria hyndmanni, Cucumaria calcigera, and two allied forms. Journ. Roy. 
Micr. Soc., ser. 2, vol. hi., 1883, pp. 481-484, pi. viii. 
On Amphicyclus, a Hew Genus of Dendrochirotous Holothurians, and its bearing on the Classification 
of the Family. Proc. Zool. Soc. Lond., May 6, 1884, pp. 253-258. 
On the Structural Characters of the Cotton Spinner (Holothuria nigra) and especially of its Cuvierian 
Organs. Proc. Zool. Soc. Lond., May 20, 1884, pp. 372-376. 
Further Hotes on the Cotton Spinner. Proc. Zool. Soc. Lond., December 2, 1884, pp. 563-565. 
1 This list indicates only the books and memoirs which are referred to in the text, and which treat of the syste- 
matic arrangement of the Holothurioidea. An * placed before a memoir signifies that I have not had the opportunity 
of seeing the original myself. 
