| Publication Type: | Journal Article |
| Year of Publication: | 1937 |
| Authors: | W. G. Hewatt |
| Journal: | American Midland Naturalist |
| Volume: | 18 |
| Pagination: | 161-206 |
| URL: | http://www.jstor.org/stable/2420496 |
| Publication Type: | Journal Article |
| Year of Publication: | 1937 |
| Authors: | W. G. Hewatt |
| Journal: | American Midland Naturalist |
| Volume: | 18 |
| Pagination: | 161-206 |
| URL: | http://www.jstor.org/stable/2420496 |