VESICULIFERA,

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8. VESICULIFERA P ALU DOS A HaSS.

Plate LII. Pig- 3.

Char. Filaments of less considerable diameter than those ofV. lacustris. Cells usually three times as long as broad.Sporangia oval, contained in inflated cells of the sameform.

Vesiculifera paludina ? Hassall, in Annals of Nat. Hist.,vol. x. p. 390.

Hab. Cheshunt : A. H. H. Framfield Common: Mr.Jenner.

This species comes nearest to V. ciliata; but the inflatedcells are of a different form. I know not whether this be thespecies, described by me in the “ Annals ” as Vesiculiferapaludina, or whether that species be different from V. capillaris,not having had opportunities of making any comparative ex-amination of them.

9. Vesiculifera pulchella Hass.

Plate L. Fig. 3.

Char. Filaments of considerable diameter. Cells usually twoand a half or three times as long as broad. Sporangiacircular , contained in much inflated cells, which are at firstoval, then circular, and lastly someichat hexagonal.

Tlab. Cheshunt ; Notting Hill: A. II. II.

This is a very fine species, seeking usually rather purewater; it is of an intense and beautiful green colour.

10. Vesiculifera Ralfsii Hass.

Plate L. Fig. 8.

Char. Filaments usually rather smaller than those of V. pul-chella. Cells varying in length from twice to four timestheir diameter. Sporangia circular, lodged in cells of anhexagonal form.

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