Occasional Papers of the Museum of Zoology 9 



In a recent paper by Dice and Sherman* they have expressed 

 themselves as follows : "We are firmly convinced that it is 

 better to describe a great number of habitats rather than to 

 lump dilTerent kinds of environments together. It is infinitely 

 easier for a later worker to combine several habitats which 

 have been split too finely than it is to separate the component 

 habitats which may have been lumped together under one 

 name." With this view the writer fully concurs. 



In the lists of species under the dififerent habitats, an asterisk 

 (*) indicates that the species is common or abundant, a dagger 

 (t) that it is of infrequent or rare (perhaps accidental) 

 occurrence in the habitat. 



Xerophytic Habitats 



Bare dry sand habitat. This is one of the typical habitats 

 of the dune area, where it is extensively developed. It com- 

 prises the middle beach, lying between the moist strand line 

 and the cottonwood-beach grass zone, and the areas of bare, 

 wind-swept sand forming the floors and sides of the blow- 

 outs. The sand is dry and loose, and vegetation is almost 

 completely absent ; the surface is usually scattered with a 

 small amount of driftwood and other debris, especially along 

 the beach. In times of storm the entire beach to the very 

 foot of the dunes is swept by the waves. The scarcity of 

 food and shelter makes it evident that the Orthoptera found 

 here must be of only transitory occurrence. The following 

 species were taken in this situation : 



Dissosteira carolinaf Gryllus assimilisi 



Trimcrotropis inaritiniaf 



* Dice. L. R., and Sherman. H. B., 1922, Notes on the Mammals of 

 Gogebic and Ontonagon Counties, Michigan, 1920. Occ. Pap. Mus. 

 -Zool., Univ. Mich., No. 109, p. 5. 



