Cyclaspis coelebs Calman 1917

Diagnosis. Female. Unknown. Male. Carapace with single transverse ridge posteriorly, with single tubercle ventral to origin of pseudorostral suture; 0.7 as high as long; eyelobe with lenses; antennal notch present; anteroventral corner smooth. Pereonite 1 not visible. Pereonite 2 not produced dorsally. Pleon with lateral articular pegs. Uropod peduncles longer than pleonite 6; endopod subequal to exopod; endopod with long plumose setae proximally and stout setae distally; exopod with long plumose setae.

Remarks. Only the adult male of this species has been described, the female is currently unknown. Within the New Zealand fauna, the combination of a single posterior transverse ridge and a single tubercle distinguishes this species from all other species of Cyclaspis . Jones (1963) suggests that the record of this species from the Andaman Islands by Kurian (1956) is unlikely to have been correctly identified.