a new Species of For ami nif era. 321 



Squamulina varians, mihi. PI. V. figs. 1-5. 



Test white, more or less circular, plano-convex, raised or 

 depressed, or conical vertically or horizontally — in short, pre- 

 senting all kinds of forms from a symmetrical dome-shaped 

 body with circular base to an amorphous mass fringed out, 

 amoeba- like, at the circumference into every variety of inden- 

 tation ; possessing a single circular aperture at the base or 

 summit, or anywhere between the two, widening outwards ; 

 sometimes crescentic and lateral, at others produced in a cir- 

 cular form on a short neck ; composed of colourless grains of 

 quartz and sponge-spicules, fixed or tessellated more or less 

 smoothly in a chitinous substance, which, extending across 

 the base, fixes the test to the surface of the fucus or object on 

 which the animal may be located ; evidencing, by efferves- 

 cence with acid, a slight admixture of calcareous matter, and 

 sometimes, when the fragments of the spicules are long and 

 pointed, or capitate, allowing these to project more or less be- 

 yond the surface, the ca])itate ones with their obtuse ends 

 outwards. Base or discoidal portion outwardly extending be- 

 yond the body of the test, and terminating in a thin edge, 

 which may be circular, subcircular, or more or less indented ; 

 and internally (that is, in the chamber of the test) presenting, 

 at its point of union with the body, a circular, subcircular, or 

 wavy outline, more or less dentated by pointed prolongations 

 of the test inwards, which, after being continued up the side 

 for a little way, cease to appear above the surface of the inte- 

 rior long before arriving at the summit of the dome. Cham- 

 ber lined by chitinous substance, which chiefly composes the 

 base or disk and thus forms the bond of attachment between 

 the test and the fucus or body on which it may be located. 

 Animal substance occuftying the chamber, and consisting of 

 granuliferous sarcode, of a light yellow colour while living, 

 charged with oil-globules, frustules and filaments of Diato- 

 macete, chiefly of Melosira, and reproductive cells. Size very 

 variable, seldom more (and frequently less) than l-30th inch 

 in diameter. 



Hab. Sea : Laminarian zone, on Phyllophora ruhens and the 

 purse-like inflation of the root of Laminaria bulbosa, in com- 

 pany with Lagotia vtridis, Wright, chiefly inside, and with 

 Squnimdina scopula, Leucosolema botryoideSj and Grantta 

 ciliata, chiefly outside. 



Loc. Beach at Budleigh-Salterton. 



Obs. This species appears to be so like Schultze's Squamu- 

 lina hfiu's, that, but for the test being composed of grains of 

 quartz and fragments of sponge-spicules, instead of calcai-eous 



