Abstract
The purpose of the present paper is to bring together brief descriptions of the various species of the genus Anguillulina, more generally known under the synonymous generic name of Tylenchus Bastian, 1865. In the case of the plant-parasitic species, in addition to particulars on dimensions and morphology, data are given on life-history, hosts and geographical distribution; such matters as symptoms, pathology and methods of control are not dealt with.