Takeda . — On Carteria Fritschii , sp. nov . 371 
still enveloped by the mother-cell-wall, which by this time is much distended, 
though fitting fairly close round the daughter-cells. 
As to the affinity, the new organism no doubt comes near C. multifilis 
(Fres.), Dill, 1 
It differs, however, from its nearest congener, firstly in its thicker cell- 
wall, secondly in its less round shape, and thirdly in its shorter flagella. 
According to Dill 2 the flagella of C. multifilis are inserted in pairs, and 
they do not radiate in four directions, as described by Goroschankin. 3 
He also states that C. multifilis possesses a flat papilla. The writer has 
not been fortunate enough to examine any reliable specimen of C. multifilis ; 
but so far as his knowledge goes, in Carteria , Chlamydomonas , and possibly 
in the allied genera, the flagella (either four or two, as the case may be) are 
usually attached to the anterior protoplasmatic beak, from which they 
radiate in four, or, in the case of only two, in two directions, but not as 
described and figured by Dill. Unfortunately Dill does not give any figure 
of C. multifilis seen from the anterior end. If his statement was based on 
the examination of the side views only of the organism there is sufficient 
room for doubt. As to the structure referred to by Dill as a papilla, 4 the 
writer differs in opinion. Judging from the figure given by Dill, the so- 
called £ Hautwarzchen 5 is only a thickening of the cell-wall, but not a papilla 
in the proper sense. 
Dangeard apparently examined a form very similar to our new 
species, 5 but confused it with C. multifilis , and consequently he proposes to 
modify Goroschankin’s description of C. multifilis. It appears that the 
specimen delineated by Dangeard in his Fig. 1 9, c, had the inner gelatinous 
part of the cell-wall well developed at the anterior end, which apparently 
made him suppose that the protoplast had contracted. 
Amongst the described members of the genus Carteria , C. Klebsii 
(Dang.), France, 6 appears to be the only species which possesses a relatively 
thick cell-wall. The cell of this species is, however, ellipsoid or cylindrical, 
and is furnished with a conical papilla at the anterior end. Also the flagella 
of this species are, according to Dangeard, markedly shorter than the length 
of the body. 
As to the mode of locomotion, it has already been pointed out that the 
organism usually swims forwards, but occasionally backwards. When it 
moves backwards the speed is not so great as that of the forward move- 
1 Dill : in Pringsh. Bot. Tahrb., vol. xxviii, 1895, pp. 341, 353. 
2 1 - c., p. 342, Taf. v, Fig. 51. 
3 In Bull. Soc. Imp. Sc. Nat. Moscou, 1891, p. 12T. The organism is described under 
C hlamydomonas. 
4 1. c., p. 353. 
5 Dangeard : in Le Botaniste, 6 e ser., 1899, p. 159, Fig. 19 A, c. 
6 France: Zur Systematik einiger Chlamydomonaden, 1892. This species was first described 
as Pithiscus Klebsii , Dang., in Ann. Sc. Nat., 7 e ser., vii, 1888, p. 137, PI. 12, Figs. 1-6. 
