FSFL EM485, EM486 (2 ovig. ♀♀-54°39′S, 58°04′W, 180 m deep; May 6, 1978). Total length from tip of rostrum to posterior margin of telson, 10.5 cm in both specimens.
Description:
A beautiful species. Carapace not compressed, but rather bulged, and quite smooth without distinct ridges or grooves; a longitudinal very weak ridge running from antennal spine to about anterior third of carapace; epibranchial spine small. Rostrum slightly longer than carapace, curving obliquely upward; its upper margin armed with 4 forward-directed spines, the anteriormost of which is only slightly behind the median part; posterior 2 spines placed on carapace, the posteriormost being just in front of median part of carapace; 2 spinules at upper margin of rostral distal end; proximal part of rostrum deep, with orbital part excavated, the lower margin of rostrum being armed with 8 spines. Antennular stilocerite long and extending to median part of second segment of peduncle; antennular flagellum short and not attaining tip of rostrum; antennal scaphocerite narrow, tapering and ending in a sharp sipne. First 2 pereiopods chelate, and first pair very long; last 3 pairs long and stout; dactyli very short and armed each with some spines on lower margin. Fifth abdominal pleura sharply angulated at posterior end. Telson with 4 pairs of movable spines on upper surface, with posterior median part angulated, associated at each side with a strong spine and shorter one on lateral end.
Distribution:
South America from the Golfo de Ancud, about 41° S at Chilean coast through the Straits of Magellan northward to Argentine coast about 40° S, and also known from South Georgia; 13-320 m deep.
Remarks:
Anchisteilla hyadesi A. Milne Edwards and A. seneuili A. Milne Edwards are known as synonyms of the present species. Holthuis (1952) definitely showed that the short rostrum of A. seneuili is the regenerated form.