ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 599 



elements, but others are glandular, and the secretion of the latter passes 

 into the csecum and collects in a schizoccelic space in the connective 

 tissue between the peritoneal layer and the sex-cells. The material 

 seems to be used by the sex-cells, and probably by the viviparously 

 developed embryos. 



New Holothurian from French Coast.* — R. Kcehler and C. Vaney 

 describe Pseudocucumis cuenoti sp. n. found near Archachon between 20 

 and 50 metres. It approaches P. mixta from Arctic waters, but differs 

 in the form of the radial pieces of the calcareous ring, in the number of 

 tentacles, and in the distribution of the tube-feet. With the exception 

 of P. mixta and this new species, all the known species of Pseudocucumis 

 are from Indo-Pacific regions. Another point of interest is that P. cuenoti 

 seems to be a transitional form between the genera Pseudocucumis and 

 Phyllophorus. 



Northern Synaptids.f — Hjaimar Ostergren describes Synapta ber- 

 gensis sp. n., S. decaria sp. n., S. inhcerens (0. F. Miiller), Labidoplax 

 buskii (M'Intosh), L. media sp. n., and Myriotrochus th&eli sp. n., and 

 discusses the value of the various specific distinctions. 



Ccelentera.l 



History of Investigation of Hydroids. f — M. Bedot continues his 

 painstaking account of researches on Hydroids. The first part brought 

 the record down to 1821, the present part deals with the period from 

 1821 to 1850. He gives a bibliographical index, a statement of the 

 various classifications proposed, and a list of the species with synonyms. 



Polyparium ambulans Korotneff.§— Oscar Carlgren does not believe 

 in Polyparium ambulans, and says that any naturalist who works by 

 the seaside for a month or two may find a Poly 'par wm-like organism, 

 namely, a separated portion of a sea-anemone, as indeed was suggested 

 by Ehlers in 1887. He gives circumstantial reasons for believing that 

 Polyparium was a torn-off and healed-up portion of the most distal 

 region of an Actinian belonging to the family Stoickactidaj. He thinks, 

 therefore, that the remarkable organism which Korotneff described has 

 had its day, and should now disappear from the list of Ccelentera. "We 

 have without Polyparium quite enough of zoological paradoxes." 



Magellan and Chilian Hydroids. ||— CI. Hartlaub reports on various 

 collections of Hydroids from the Patagonian coast, the Falkland Islands, 

 Magellan Straits, Chilian coast, etc. He finds undeniable resemblances 

 between the arctic and boreal and the sub-antarctic Hydroid fauna, and 

 has many interesting zoogeographical notes. 



Southern Antipatharians.1T — J. Arthur Thomson reports on the 

 small collection of Antipatharians made by the Scottish Antarctic Ex- 

 pedition. Twelve specimens were obtained by the ' Scotia,' representing 



* Rev. Suisse Zool., xiii. (1905) pp. 395-400 (6 figs.). 

 t Arch. Zool. Exp., iii. (1905) Notes et Revue, No, 7 pp. 133-144 (2 figs.). 

 J Rev. Suisse Zool., xiii. (1905) p. 1-183. 

 § Biol. Centralbl., xxv (1905) pp. 253-6. 



|| Zool. Jahrb., 1905, Supplement vi., Bd. 3, Heft 3, pp. 497-714 (1 map and 142 

 figs.). t p ™c. R. Phys. Soc. Edinburgh, xvi. (1905) pp. 76-9. 



