No. 395-] REVIEWS OF RECENT LITERATURE. 903 
from a German catfish, appeared again from a fresh-water fish of 
Australia. Another unexpected discovery was a new species of 
Syngamus, the gap worm of fowls. This new form occurred in the 
choana of a deer from Rio Grande do Sul, and in the nasal cavity of 
a goat from Cameroon. Only one other species of this genus occurs 
in the Mammalia: Syngamus dispar in the trachea of Felis concolor. 
This paper constitutes the second number of a new series of pub- 
lications from the Museum fiir Naturkunde, Berlin; the management 
of the museum is certainly to be congratulated on the admirable form 
in which the series is being published. 
Movements of Pseudopods. — M. Eugène Penard has recently 
published’ an account, rather too brief, of his observations “sur les 
mouvements autonomes des pseudopodes.” 
The results of most interest may be summarized as follows (they 
relate chiefly to Difiugia lebes Penard) : — 
_ 1. If a severed pseudopod be removed from the parent to a dis- 
tance not more than two or three times the diameter of the shell of 
the parent, it will, after having remained in a globular, motionless 
condition for a short time, extend itself toward the parent, and finally 
reach it and become fused with it, the junction with the parent usu- 
ally being at the latter’s mouth. 
2. If the original point of contact is not at the parent’s mouth, the 
returning pseudopod moves along the shell of the parent until it 
reaches this point. 
3. When the returning pseudopod comes very near the parent, the 
latter usually extends one of its own pseudopodia toward it, and this 
particular paternal process becomes larger than the others. 
4. The absorption of the detached pseudopod by the parent is not 
an act of digestion and assimilation, as is proved by the fact that 
the fragment is not taken into a vacuole of the parent, nor into its 
interior in any way; and by the further fact that the act of absorp- 
tion is fully accomplished in a much shorter time than is required 
for a true digestion. 
5. Severed pseudopodia are attracted neither by one another nor 
by foreign bodies of practically the same size as the parent. 
6. If a different individual Difflugia, of the same or of another 
species, be placed near an amputated pseudopod, the latter not only 
will not be attracted toward the former but will actually move away 
from it. WER 
1 Archives des Sciences physiques et naturelles, Mai, 1899, pp. 434-445- 
