Alamprops carinatus (Hart, 1930) n. comb.
Lamprops carinatus Hart, 1930: 34–36, fig. 4A–E.
Type material. Lectotype: BCPM 978-119 - 1, female . Paralectotype: BCPM 978-119 - 2, male. Berry Point, Vancouver Island . Not seen .
Diagnosis. Carapace without lateral ridges; eyelobe not extending to anterior border of pseudorostrum. Telson without lateral setae, 5 terminal setae, central seta longest, outer pair longer than inner pair. Uropod peduncle with 6 medial setae; uropod exopod article 1 1.5 length of article 2. Male eyelobe with lenses, antennal flagellum extending to posterior border of pleonite 6.
Depth. 25–120 m.
Distribution. Vancouver Island to Alaska.
Remarks. Alamprops carinatus can be differentiated from the similar A. flavus and A. obfuscatus by the terminal setae on the telson. In A. carinatus, the central seta is the longest, while in A. flavus and A. obfuscatus the outermost pair are longer than the central seta. Alamprops carinatus can be differentiated from the similar Lamprops fuscatus by the telson length relative to the uropod peduncles. In A. carinatus the telson is subequal to or slightly shorter than the uropod peduncles, while in L. fuscatus the telson is longer than the uropod peduncles.