240 Dr. G. C. Wallich on the Extent and Causes of 
In accordance with the views advanced, the whole of the 
Testaceous Proteina may be accordingly arranged as follows :— 
= ( Species 2. 
E. alveolata (Duj.). 
Subspecies, E. Enchelys=D. Enchelys (Ehyv.) 
=Trinema acinus (Duj.). 
E. margaritacea = Cyphoderia margaritacea 
(Schlumb.). 
| var.? EB. baltica=Lagynis baltica (Schultze). 
| - 
{ Species |. 
Genus | 
PS 
- S'S a 
Subfamily. 
Euglyphide. 
ACTINOPHRYNA. 
ley) 
Cadium caudatum (Wall.). 
var. C. marinum (Bailey). 
Genus 2. 
(Bai 
Species 1. 
D. proteiformis (Ehr.). 
Subspecies 1. D. mitriformis (Wall.). 
var. «. D. acuminata (Ehr.). 
», B. D. spiralis (Leclerc). 
» y- D. pyriformis (Perty). 
. lageniformis (Wall.). 
. globularis (Duj.). 
. tuberculata (Wall.). 
. aculeata (Ehr.). 
» y. D. corona (Wall.). 
Subspecies 3. D. Arcella (Khr.). 
Subspecies 4. D. marsupiformis (Wall.). 
var. #. D. cassis (Wall.). 
Families. 
———, Cadium  #uglypha(D 
Order PROTEINA. 
aA 
33 
Subspecies 2. 
var. @. 
39 B. 
AMGBINA. 
Subfamily. 
Diffiugide. 
Genus |. Difflugia. 
> a wa ; a 
$2 
Soesoys 
—- 
r 
Genus Dirrivucra (Leclerc). 
Characters. Animal a testaceous Amoeban. Pseudopodia 
cylindrical or digitate. Test chitinoid, or chitinoid with addi- 
tion of mineral matter. 
Species 1. D. proteiformis. 
Characters of test. Form of embryonic test subspherical, 
from 3th to 4th of the diameter in one direction being trun- 
cated and constituting the aperture. Form of mature test ex- 
tremely variable. . 
Subspecies 1. D. mitriformis (Wall.). 
Characters. Test mitre-shaped, more or less inflated at posterior 
extremity, and without any fixed ratio between its length and breadth. 
Var. «. D. acuminata. Apex of test acuminate. 
Var. 3. D. spiralis. Anterior third of test bent back upon its body, so 
as to present a retort-shape*. 
Var. y. D. pyriformis. Shape varying from the pear- to the balloon- 
shape. 
Var. 6. D. lageniformis. The same as the last, but with a lip everted 
in varying degrees. The most highly developed variety of this 
form, and one that might pass for the archetype of the Roman 
amphora. 
* It is somewhat of a misnomer to call this form spiral; as already 
stated, the turn does not extend further than that of a retort. 
