Two new Comesomatidae species from the Gulfs of San José and San Matías, Chubut province of
Argentina are described. Sabatieria flecha sp. n. is characterized by the particular shape of the dorsal
distal end of the spicule, smaller spicule length (47?m; 1.5 anal body diameter), number of
weakly cuticularised supplements (12), size of amphids with two and a half turns, short body length
(1260?m), values of a (36) and b (7,8) and tail shape with 1/3 cylindrical part. Sabatieria sanjosensis
sp. n. is characterized by a long body length (3000?m), large value for a (82) and tail shape with
1/2 cylindrical part.