Porcellana sigsbeiana A. Milne-Edwards, 1880

(Fig. 3 D)

Porcellana sigsbeiana A. Milne-Edwards, 1880: 35 (type-locality: off delta of Mississippi River, north of Yucatan and Flannegan Passage, Virgin Islands).

Material examined. USA: Massachusets—Martha´s Vineyard, 245 m, 1 male (USNM-35401). North Carolina— Cape Lookout, 307 m, 1 female (USNM-11280).

Recognition characters: Carapace as long as broad, convex; lateral margin slightly upturned, epibranchial angle defined by deep groove; gastric region dilated. Front strongly trilobate; median lobe depressed, exceeding lateral lobes. Outer orbital angle produced into broad tooth, directed downward. Chelipeds robust and slightly rugose; merus with broad, spine-tipped triangular lobe on flexor margin; carpus thin, flexor margin with proximal small spiniform tooth; propodus robust, flexor margin fringed with short setae; fingers less than half length of palm, curved, serrate margins. Walking legs slender; propodus unarmed, dactylus with 4 spines on flexor margin. Gonopods present in males. Telson composed of 7 plates.

Habitat. Associated with echinoderms (Veloso 1998), from 16–393 m depth (Werding 1977; Williams 1984).

Geographic distribution. Western Atlantic—USA, Massachusetts, North Carolina, Florida, Mississippi, Louisiana; Mexico, Tamaulipas, Veracruz, Campeche and Yucatan; Honduras; Cuba; Puerto Rico; Virgin Islands; Colombia; Venezuela; Trinidad; Suriname; and Brazil (from Pará to Maranhão).