(gure 11)

Type material. HOLOTYPE: USNM 253300, ovigerous 0.9 mm, IIOE cruise 9 sta 453, oV Somalia, 11ss11¾N, 51ss14¾E, 47 –49 m, 17 December 1964. PARATYPES: USNM 253301, one, six ovigerous, two, one juvenile, same data as holotype.

Other material. USNM 253302, 12, 60 ovigerous, 41 juveniles, same data as holotype; USNM 253303, one, sta K-AL-50, on purple sponge, outer reef slope, Picard Island, 9ss24¾S, 46ss12¾E, 25 m, 15 April 1983.

Diagnosis. Cephalon and pereonites 1–6 each with two pairs of stiV dorsal setae; lateral cephalic lobe with single stiV seta; low submedian lobes on anterior margin of cephalon each with two setae; coxa of pereopod 2 having ve stiV setae, of pereopods 3–6 each with four setae, of pereopod 7 with single stiV seta. Maxilliped with two coupling hooks. Pereopod 1, carpus with three strong posterodistal setae, propodus with three smaller proximal setae. Pleon midlength about 1.4 times basal width, with single lateral stiV seta and pair of submesial posterior setae. Pleopod 1 in male distally truncate, each ramus with six distal setae. Uropodal protopod having three distal stiV spines; exopod and endopod each with four distal stiV setae.

Remarks. See ‘Remarks’ section after Santia urospinosa.

Etymology. The speci c name, from the Latin for spike, refers to the overall spiky appearance of the animal.