Paralamprops serratocostatus Sars, 1887: 26–32, pl. 2 figs 6–13, pl. 3.
Type material. Syntypes: MNHN Cu 130, 7 specimens. Kerguelen Islands.
Diagnosis. Carapace with 3 pairs lateral ridges, marginal carina toothed. Telson 0.8 uropod peduncles, with 3 terminal setae. Uropod peduncles with 17 medial setae. Adult male unknown.
Depth. 230–3674 m.
Distribution. Kerguelen Islands; Weddell Sea, 49°S, 69°E.
Remarks. The species is unique in the genus in having long ridges on the carapace that are strongly serrate. The most similar species is Farragolamprops seminalis, which also has serrate ridges on the carapace. However, in F. seminalis the eyelobe has lenses, and the telson terminal setae are unequal, with the central seta short, while in Paralamprops serratocostatus the eyelobe has no visual elements, and the telson terminal setae are equal in length.