205 



For detailed accounts of the ecological relations of this species 

 see Ortmann ('06) and Harris ('03). 



Cambarus propinquus Girard. Neighborhood Crawfish. 



This species also was taken from a small pool in the south ravine 

 (Sta. IV, d), Aug. 20, 19 10, by Hankinson. 



Consult Ortmann ('06) and Harris ('03). 



Cambarus immunis Hagen. Immune Crawfish. 



This species was taken from pools in the temporary stream (Sta. 

 IV, d) by Hankinson Aug. 17 and 20, 19 10. 



Consult Harris ('03). 



MYRIAPODA 



LYSIOPETALIDiE 



Callipus lactarhis Say. 



This myriapod was taken among dead leaves and rotten wood in 

 the forest bottom at the mouth of a ravine (Sta. IV, c) Aug. 20 

 (No. 113). 



There is hardly a more neglected group of animals in Illinois than 

 the Myriapoda. The ecological relations of our American myriapods 

 offer a virgin field for study. A few observations upon the habitat 

 of the humus-inhabitating Texas species have been made by Cook 

 ('11a, pp. 147-150). 



Craspedosomid^ 



Clcidogoua cccsioannulata Wood. 



This myriapod was taken under damp leaves on the lower slopes 

 of the lowland forest (Sta. IV, b) Aug. 22 (No. 140), associated 

 with the old-fashioned ant, Stigmatomma pallipes. 



POLYDESMID^ 



Folydesmus sp. 



This myriapod was taken under the bark of an oak stump in the 

 early stages of decay — all sap-wood being honeycombed ; the remain- 

 der 'solid though discolored — (Sta. IV, b) Aug. 22 (No. 125), asso- 

 ciated with Philomycits carolinensis. 



ARACHNIDA 

 Phalangiida 

 Phalangiid<e 



Liobunum vittatum Say. Striped Harvest-spider. 



One female was taken in the upland Bates forest, while running 

 about on the dry leaves lying around a decayed stump (Sta. IV, a) 



