I 880.} Zoölogy. ` 531 
PRELIMINARY NOTE ON BRANCHIPOD CRUSTACEANS.—In an iso- 
lated small pool, with a white clay bottom, containing milky 
sland, I found in 
sitory stages between this pale race and Enbranchipus vernali 
Verrill, I shall soon endeavor to bring to notice—Car/ F. Gisslers. 
[See Schmankewitch’s paper on the influence of external circum- 
stances on the organization of animals. Zeits. Wissen. Zoologie, 
XXIX, 1877.—F£ditors. | 
A New Synruetic Type.—At a recent meeting of the Zodlogi- 
cal section of the Russian Association of Naturalists, Kovalevs- 
gave an account of Caloplana metschnikowt,a new form from 
the Red sea, intermediate between the Ccelenterates and the 
Planarian worms. In its outer form it resembles the Planarians; 
Is gray above, white below, and about three lines in length by two 
in breadth. The mouth is a slit-like opening in the middle of the 
ventral surface, and communicates with a. four-lobed stomach 
which resembles most nearly the “funnel” of the Ctenophora; 
rom it originate a large number of canals which radiate to the 
periphery of the animal and open into a ring canal which bears 
many cecal appendages. On the dorsal surface, almost directly 
over the mouth, is a vesicle containing a number of vibratile 
brook trout. It is observable of all hybrids that they are usually 
more shy and wild than either of their parents, and that in appear- 
