EXPLANATION OF PLATE 'SN .—Continued, 
a. As first given off. 1. Its appearance on December 20th, showing 
“ lobose ” pseudopodia and granules given off from it. By January 25th 
it had discharged all the granules, which could not be distinguished from 
the other organic matter on the slide. 
Pigs. 16, 17, 18, and 19. — Amoebae, as given off from Shepheardell^e ; 
16 containing nucleus, n. Nucleus, c. v. Contractile vesicle. 17. 
Another form, occasionally nucleated. 18. Non-nucleated, very active 
form. 19. Resting condition, as now assumed, four to seven weeks after 
liberation. 
PLATE XVI, 
Illustrating Shephear della tcsniformis histology, and Lieberkuhnia. 
Pig. 1. — Camera tracing of the subcutaneous layer of the sarcode of 
“ Shepheardella^'" mounted in glycerine jelly (without any other treatment) 
and containing, imbedded in its clear, structureless protoplasm, nucleated 
granules of various sizes, and large clear masses of firmer protoplasm. 
X 600 diams. 
Pig. 2. — Camera tracing of a similarly mounted specimen, after treat- 
ment with osmic acid, alcohol, and picro-carmine, showing every granule 
contained in the clear protoplasm to be of definite form and nucleated. 
X 600 diams. 
Pig. 3. — The nucleus of a glycerine-mounted specimen (only), showing, 
the nucleus, a, proper, enveloped in a membrane, he. X 300 diams. 
Pig. 4. — The nucleus of another specimen, after treatment with acetic 
acid and carmine, showing the nucleus, proper, filled with granular 
protoplasm (stained deeply), and an irregular edged denser mass near its 
centre (nucleolus), the nucleus being embraced by a delicate membrane, 
b. X 300 diams. 
Pig. 5. — Another nucleus, treated and mounted as Pig. 4, showing a^ 
nucleus ; the protoplasmic contents contracted upon its walls ; c, the 
embracing membrane ; and c?, the very transparent enveloping sac. x 300 
diams. 
Pig. 6. — Another, mounted in glycerine jelly only, showing Cy the 
embracing membrane; and c?, the enveloping sac wrinkled upon it. 
X 300 diams. 
Pig. 7. — Shephear della tcenia, from a living specimen. X 40 diams. 
Pig. 8. — Lieberkuhnia Wageneri. X 55 diameters. 
Pig. 9. — Aperture of ditto. Base of the principal stem of pseudopodia, 
shown as an oval spot within the square mouth. X 55 diams. 
Pig. 10.— The same specimen shortly after being transferred to the cell, 
showing the living worm entangled among the pseudopodia. X 38 diams. 
Pig. 11. — The same, with the worm swallowed as far as possible. 
Pig. 12. — Marginal portion of the same when mounted in glycerine 
jelly, viewed in optical section, showing transparent integument, a ; vesi- 
cular nuclei, h\ granular protoplasm, c\ and subcutaneous layer of finer 
protoplasm, d, x 1000 diams. 
