75 



Phidippus spp. Coccinellidae, larvae 



Myrmcleonidac, adults Calopteron reticulatum 



Clirysopa oculata Odynenis sp. 



Oecanthiis couliucns Polistes pallipes 



Sinca diadeiiia Priononyx hifoveolatiis 



Keditzioliis fcnts Priononyx atratiis 



Triphleps iiisidiosiis Cerceris spp. 



Tcrricolous Predaceous Animals. — The predaceous animals of 

 the surface and sub-surface, though found with the phytophagous 

 forms of those habitats, are apparently much more abundant than 

 the latter. 



(i) Surface predaceous animals 



Drassits sp. *Hcterodon nasicus 



*Lycosa spp. ^Cnetiiidophorns scxlincatiis 



Phidippus ardcus . *Cistudo ornata 



*CicindcIa forniosa gcncrosa Colinus virginianus virginianiis 



*Cici}idcla scuteUaris lecontei ■^Sturnclla neglecta 



Sphaerophthalma ferntgafa Poocoetes grauiincus graniineiis 



*SpJiaeropJifhaInia chlainydota Cliondcstcs graiiimacus gram- 

 Sphacrop/ithalina Z'csta uiacus 



Anoplius spp. "^Spisa americana 



Sphcx pictipennis Mephitis nicsonidas azia 



(2) Sub-surface predaceous animals 



Lithobius sp. Pterostichus lucuhlandus 



Xysticus gulosus Calathits opaculiis 



Myrinclconidac, larvae Selenophorus spp. 



Gryllus ahhrcviatns Hister biplagiatns 



Alydits sp. Saprimis spp. 



*Cicindela spp., larv?e Tclephovinac, larvae 



This habitat is more or less heterogeneous and of scattered hori- 

 zontal distribution, and the animals in it have a great variety of 

 habits. JMany animals found under cover by day are roaming about 

 through the association at night, and while under cover are merely 

 resting. Others are known to feed in the sub-surface stratum. 



Interstitial Animals. — The small animals, both phytophagous and 

 predaceous, which live on the bare spaces between the bunch-grasses, 

 are the characteristic forms of open associations. They gradually 



