halteria

Century Dictionary and Cyclopedia

1. n. The typical genus of Halteriidæ, having the peristome spirally involute, the mouth eccentric, and a girdle of supplementary springing-hairs. They are very minute, but may be recognized by their globose form and slow rocking or lagging motions, interrupted at times by quick skipping. They are found only in fresh water. H. grandinella is an example.