The average date of the first 1-inch snow (1 inch or more) is December 2. The greatest depth of snow on the ground was 19 inches on February 8-10, 1982. The greatest 24-hour snowfall was 15 inches on January 1-2, 1999. Temperature and precipitation records go back to 1888 for Champaign-Urbana.
The name annelidia derives from annellus, which means little ring in Latin. The body of annelids is divided into segments that are separated by septa, and in many annelids, bristles called satae are attached to each segment.
There are marine, freshwater and terrestrial annelids, both free-living and parasitic. There are three classes of annelids: 1  Class Polychaeta: These annelids have conspicuous segments with lateral projections called parapodia, and bear prominent tentacles on the head. 2  Most are marine. 3  Class Oligocheta: These annelids have conspicuous segmentation, but lack a well-defined head.