N SLIME-MOULDS

NOTE.--Plates I., II., IV., VI., VII., VIII., IX., X., were originally
by MISS MARY P. MACBRIDE; Plates V., XI., XII., were by MRS. HATTIE J.
DOUGLASS; Plates XIII., XIV., XV., XVI., XVII., were by the late MRS.
BERTHA E. LINDER PUMPHREY; Plate III. was the joint work of MRS.
PUMPHREY and MISS MACBRIDE. All these, except IV., have been re-drawn
for new plates; XVI., with additions, by MISS MARGARET HAYES; the
remainder by MR. W. J. CALVIN, C. E. Plate XVIII. is by MISS HAYES;
Plate XIX. by Miss A. M. HELD; Plate XX. by MISS JANE COVENTRY.

EXPLANATION OF PLATE I

_Enteridium splendens_ Morg., p. 211.

Fig. 1. Aethalium, natural size.

Fig. 1 _a_. Spore of the same species, x 1400.

Fig. 1 _b_. Capillitium of the same species, x 420.

_Dictydiaethalium plumbeum_ (Fr.) Rost., p. 215.

Fig. 2. Aethalium, natural size.

Fig. 2 _a_. Sporangia and spores, x 50 (after Schroeter).

Fig. 2 _b_. Persistent apices of the peridia.

_Lindbladia effusa_ (Ehr.) Rost., p. 204.

Fig. 3. A group of sporangia, x 30.

Fig. 3 _a_. A single spore, x 1400.

_Tubifera ferruginosa_ (Batsch) Macbr., p. 206.

Fig. 4. A group of sporangia, x 5.

See also Plate VII., Fig. 8; and Plate XII., Fig. 14.

_Cribraria dictydioides_ Cke. & Balf., p. 222.

Fig. 5. Three sporangia, x 15.

Fig. 5 _a_. A single sporangium, to show reticulate thickening, x 60.

Fig. 5 _b_. A spore, x 1400.

_Dictydium cancellatum_ (Batsch) Macbr., p. 230.

Fig. 6. Sporangium, x 30.

Fig. 6 _a_. A part of the peridial wall, seen from within, x 84.

_Ceratiomyxa fruticulosa_ (Muell.) Macbr., p. 19.

Fig. 7. Three sporiferous pillars, x about 40.

Fig. 7 _a_. Tip of a single pillar, x 84.

_Hemitrichia stipata_ (Schw.) Macbr., p. 262.

Fig. 8. Sporangia, x 6.

Fig. 8 _a_. The capillitium of the same species, x 750.

Fig. 8 _b_. A single spore, x 1000.

[Illustration: PLATE I]

EXPLANATION OF PLATE II

_Perichaena corticalis_ (Batsch) Rost., p. 243.

Fig. 1. Sporangia, x 10.

Fig. 1 _a_. A single spore, as if in section, x 900.

Fig. 1 _b_. The capillitial thread, x 750.

_Lachnobolus occidentalis_ Macbr., p. 246.

Fig. 2. The sporangia, x 8.

Fig. 2 _a_. A portion of the capillitium, x 750.

Fig. 2 _b_. Spores, x 750.

See also 4 and 4 a below.

_Arcyria cinerea_ (Bull.) Pers., p. 254.

Fig. 3. The expanded fructifications, x 5.

Fig. 3 _a_. Tip of a single capillitium mass, x 40.