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A. Milne Edwards, 1880

Anterior margin between the frontal horns convex. A strong median spine, in addition to several others, on anterior margin of carapace between frontal horns. Inner margin of horns without spines. Epistome with five tubercles on anteromedian margin; anterolateral corner with strong spine.

Type locality: "Blake" "Station No. r 241. Profond. 163 brasses. Cariacou" ( = off the Grenadines, 12°28'22"N, 61°32'18"W, 163 fms ( = 298 m), sand and coral): type in MCZ.

Geographical Distribution:
Western Atlantic: from Carriacou Island, Grenadines, to off the mouth of the Amazon River, Amapá and Pará States, Brazil.

Habitat and Biology:
The species has been taken in depths between 120 and 298 m, but there is a record from the littoral zone, and one from 4111-4122 m. The bottom is variously described as "sand and coral", "sandy calcarenite", and "smooth, consisting of brown mud ".

Carapace lengths of 1.6 to 3.2 cm have been reported, the known maximum body length is 10 cm.

Interest to Fisheries:
So far none. The species is evidently rare, and perhaps has a restricted range. Better knowledge of its occurrence and habits is required for deciding whether a future fishery will prove feasible.

American blunthorn lobster (Palinustus truncatus)