260 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Saxicolous species : 
Arenicolous " 
Humicolous " 
Limicolous species : 
Paludicolous " 
Humicolous " 
Xerophile species : 
Hygrophile " 
Thamnophile species : 
Dendrophile " 
Geophilous Locusts. 
Xerophile Group. 
Spharagemon saxatile, Circotettix verruculatus. 
Scirtetica marmorata, Psinidia fenestralis, Trimerotrojns 
maritima. 
the remaining Oedipodinae. 
Hygrophile Group. 
Paratettix cucullatus. 
Tettigidea, Acrydium granulatum, A. arenosum. 
Nomotettix, Acrydium ornatum. 
Phytophilous Locusts. 
Campestrian Group. 
Pseudopomala, Orphulella pelidna, 0. speciosa, Melan- 
oplus m. atlanis, Hesperotettix brevipennis. 
Dichromorpha, Orphulella olivacea, Chorthippus, Meco- 
stethus, Paroxya, Melanoplus bivitiatus, M. extremus, 
M. femur-rubruvi. 
Sylvan Group. 
Podisma glacialis, Melanoplus mancus, M. fasdatus, 
M. viridipes, M. scudderi. 
Melanoplus punctulatus. 
This classification was not intended for the Long-horned Grass- 
hoppers or the Crickets, both of which need a different grouping. 
Later on, Hancock (1911) brought out a somewhat similar 
classification arranging all the Orthoptera living in the vicinity 
of Chicago in fifteen groups of equal rank, the basis being the 
place of oviposition. Since then others have made attempts from 
the ecological point of view; some of them with but poor success, 
due largely to very limited experience and from study of an 
extremely small area in an unsuitable region, too far north to give 
good results.^ 
1 In this connection the old adage, "One swallow does not make a summer" 
should be carefully heeded. Only extended experience and critical observation, 
or an equivalent mass of data accumulated over a long time and under equally 
diverse conditions will enable one to estimate correctly the ecological status of 
a plant or animal. The presence of a Bunch-grass Locust in a salt-marsh does 
not prove it to be a halophile species any more than the presence of a fish in 
the milk proves that milk is its natural environment. Circumstances alter 
cases and wise judgment waits on common-sense. 
