FLAGELLATE INFUSORIA AND ALLIED ORGANISMS. 69 



Antophysa^ Mulleri, Clap, and Lachm (Claparede and 

 Lachman, 'Etudes sur les Infusoires/ pp. 64 — 66). 



Antophysa Millleri, Clark (' Ann. and Magaz. Nat. Hist,/ 

 4th ser., vol. i, p. 209). 



Atitophysa 3Iulleri, Archer ('' On Antophysa Mulleri^'' this 

 Journal, vol. vi, N. S., 1866, p. 182). 



Antophysa Mulleri, Fromentel ('Etudes sur les Micro- 

 zoaires/ Paris, p. 337, pi. xxvi, fig. 5). 



These organisms (Plate vi, fig. 6) were discovered by 

 O. F. Miiller. Kuetzing supposed that the brown stalk was 

 a peculiar fungus — Stereonema — and distinguished six dif- 

 ferent kinds. Lately (1861) Archer has shown that the main 

 stem of the organism increases independently, and that the 

 colonies at the terminal branches are to be looked upon as 

 swarm spores, which are, from time to time, produced from 

 the branches, so that the main stem is to be regarded as the 

 chief organism. Dujardin, in opposition to Ehrenberg, was 

 the first to prove adequately the flagellate nature of these 

 organisms, which he placed near Ehrenberg's genus Uvella. 



Biitschli now confirms Clark's account in its essential 

 features. For instance, as regards the presence of a deli- 

 cate, small, and very rapidly-vibrating accessory flagellum, 

 close to the base of the chief flagellum, and as to the exist- 

 ance of a lip or beak-like prominence of similar nature with, 

 and in the same position as, the one found in Spuniella 

 termo, Clark. 



Reproduction takes place within the colony by fission of 

 the individuals, as described by Clark (1. c), although 

 Biitschli states that he has seen nothing of the case or 

 coat described by that author. 



Division (Family?); Cylicoraastiges. 



The two genera, Codosiga and Salpingoeca, are closely allied 

 outwardly. They differ chiefly, if not solely, in the fact that 

 the latter are provided with peculiar shells, like Bicosoeca 

 and Dinobryon, whilst the former genus, on the contrary, 

 is devoid of such shell. Both genera possess a remarkable 

 peculiarity in the existence of a large collar or calyx sur- 

 rounding the base of the single flagellum ; and it appears 

 right to make this point one of a classificatory importance. The 

 endoderm cells of Sponges are, as Clark has shown, provided 

 with a similar collar, and so, classify Sponges as one will, 

 there still remains the remarkable agreement — still requiring 

 explanation — between the flagellum-bearing cells of the 

 Sponges and certain flagellate organisms. This appears the 



