The Crawfishes. Zao 
1. Cambarus blandingi acutus (Girard). Pond Crawfish. 
This species may be at once distinguished by the fact that in the 
males the third and fourth pairs of walking legs bear a hook on the 
third joint from the base. The rostrum is long and approximately 
triangular, with a pair of small teeth quite close to the tip. The large 
pincers and the legs which bear them are long, slender, and roughly 
granular. 
This crawfish is represented in the collection by two males and seven 
females from Aubeenaubee Creek, one male and one female from Culver 
Inlet, eight males and two females from Spangler Creek, and by two 
males and one young female from Bruce Lake. 
This is the pond crawfish of the region, its home being in woodland 
ponds. Individuals were seen from time to time, but they usually 
escaped under the leaves. Several dead ones were found in ponds. 
Generally speaking, it is not a very abundant species anywhere. It is 
occasionally met with in the sloughs of the Mississippi. 
2. Cambarus diogenes Girard. The Solitary Crawfish. 
This crawfish is an inhabitant of the lake at certain times only. It 
visits the water early in the spring for the purpose of producing its 
young, but during the remainder of the year each individual lives alone 
in a burrow over which it constructs a chimney of mud pellets. This 
habit is so peculiar, being shared by only ene cther Indiana species, 
that it alone should be almost enovgh to distinguish the solitary craw- 
fish; but as some of our readers may wish to know what the animal is 
like, the following description is given: The body is high and com- 
pressed; the rostrum is short, thick-edged, and without teeth near the 
tip; the two longitudinal, curved lines on the back run together through- 
out the whole part of their length, so that only small triangular spaces 
are left between them in front and behind. The color is usually quite 
brilliant for a crawfish, the claws, rostrum, and the elevations on the 
shell being more or less marked with crimson and yellow. 
Represented in our collections by one large female and seven young 
from Aubeenaubee Creek. Other examples were noted in 1901 as follows: 
March 31, a good-sized female caught in a pool at the birch swamp; 
April 1, one dead, in ditch east of railroad, in Green’s marsh; April 2, 
remains of several seen in the Outlet; April 3, remains of one found in 
Green’s marsh; April 4, two caught, copulating east of the railroad, in 
Green’s marsh, and one caught in the marsh north of Lost Lake; April 9, 
three living ones seen, two caught, and remains of great numbers at 
the drained lake; April 11, one big one caught at mouth of Farrar’s 
Creek, and one at mouth of Aubeenaubee Creek; April 15, several seen 
in creek at south end of the lake, two caught; April 17, a female with 
eggs caught on west side of lake; April 19, a large one dead at water’s 
