No. 403.] 
a watch glass with plenty of water. 
NOTES ON A SPECIES OF PELOMYXA. 541 
It would appear to be the 
shape into which the ameeboid body, more or less contracted 
after the reception of a 
shock, normally expands, 
beforeassuming any more 
characteristic habitus. If 
the Pelomyxa, owing to 
the shock of having been 
transferred to the watch 
glass, has contracted into 
a very compact shape, it 
may (rare condition) 
throw out short radial 
pseudopodia all over its 
body, excepting the lower 
surface (applied to the 
glass) Fig. 9. This con- 
dition is transitory, soon 
passing into the stage 
shown in Fig. 8. 
Size. — In the relatively 
contracted shapes (Figs. 8 and 9) 
P. carolinensis measures about 
I mm. in diameter. The largest 
form actually measured, in which 
the body was of the slender ir- 
regular character shown in Figs. 
6 and 7, measured in a straight 
line from pseudopodium tip to 
pseudopodium tip 2.8 mm. Some 
_two hundred specimens of this 
species were examined by myself 
and the class demonstrator during 
September ; and for the elongated 
shapes, the length may be said to 
vary from 1 to nearly 3 mm., the 
common length being 1.5 mm. to 
2mm. These measurements may 
1G. 9. — P. car. as an opaque object. 
Shortly after having been transferred to 
watch glass. Body covered with cin 
radial pseudopods. Zeiss a 
duced to % 
