A species of Chaenogobius collected in the south of Zhejiang province during 1984 is described as a new species. It is very similar to Chaenogoius mororanus in the sensory papillae, but differs in the coloration and in the number of fin rays and scales. The description of the present species is as follows:Chaenogobius transverse fasiatus Wu et Zhou sp. nov.D Ⅵ—Ⅶ, Ⅰ—9—10: AⅠ—9—10; P_1 18—20; P_2 Ⅰ—5; C.17—19. Giil rakers 2—3+7—8. LR 79—81; TR 20—22; Pred. S 17—22.Body depth 4.8—6.4 in length, width 6.7—8.0, head 3.1—3.4。Snout 3.0—4.0 in head, eye 5.8—7.2, interorbital 4.5—5.0.This new species is similar to Chaenogobius mororanus (Jordan et Snyder). But it differs from the latter in having 9—10 irregular dark transverse bands on the lateral side of the body (vs. the dots gathered in clouds and reticuations on the upper parts); 79—81 scales in the longitudinal rows (vs. 88—91); 20—22 in the transverse rows (vs. 27—28); 17—23 predorsal scales (vs. absent); counts of second dorsal fin rays Ⅰ—9—10 (vs. Ⅰ—12—14); anal fin rays Ⅰ—9—10 (vs. Ⅰ—12—14).Holotype No. SFC—916 Length without caudal 62 mm, collected from Cangnan Shuitou (Ao-jiang river), Zhejiang Province on April, 1984, kept in the Freshwater Fisheries Institute of Zhejiang province.Paratype Nos. SFC-915, 917, 918, 919 Length without caudal 49.5-62 mm.all collected with the holotype. No. SFC-920 Length without caudal 62 mm, collected from Wenzhou (Ou-jiang river), Zhejiang Province on September, 1984, all paratypes are kept in the Laboratory of Fishes (Shanghai Fisheries University) and Freshwater Fisheries Institute of Zhejiang Province.