Coxophoxus coxalis (K. H. Barnard 1932)

Coxophoxus coxalis (K. H. Barnard)

Phoxocephalus coxalis K. H. Barnard, 1932:97–99, fig. 48.

Coxophoxus coxalis.—J. L. Barnard, 1966a:84.

DISTRIBUTION.—South Georgia, 0–5 m.

Basuto, new genus

DIAGNOSIS.—Eyes present. Flagella of antenna 1–2 unreduced in female. Article 2 of antenna 1 especially shortened, ventral setae widely spread but mostly apical. Article 1 of antenna 2 not ensiform; article 3 with numerous setae and setules; facial spines on article 4 in 2 rows set highly apicad; article 5 especially short. Right mandibular incisor with 3 teeth; molar not triturative, small apparently bearing 4 or more splayed, semiarticulate spines, [?usually not bearing fuzz]; palpar hump large. Palp of maxilla 1 biarticulate; inner plate with 3 setae. Setation of maxilla 2 ordinary. Inner plate of maxillipeds ordinary; apex of palp article 3 not protuberant, dactyl elongate, apical nail distinct, medium. Gnathopods dissimilar, gnathopod 2 moderately to strongly enlarged; article 5 of gnathopods 1–2 short, free on gnathopod 1, cryptic on gnathopod 2, with weak eusirid attachment, palms oblique, hands of both gnathopods elongate, broadened in gnathopod 2, poorly setose anteriorly. Article 5 of pereopods 1–2 with posteroproximal setae. Article 2 of pereopod 3 of narrow form, articles 4–5 of pereopods 3–4 narrow to medium, article 2 of pereopods 3–4 not setose posteriorly; pereopod 5 ordinary; article 2 strongly setose ventrally; article 3 ordinary to weakly enlarged; dactyl normal. Epimera 1–2 lacking long posterior setae, without midfacial setae above ventral facial ridge, epimeron 3 ordinary; urosomite 1 generally naked, urosomite 3 without dorsal hook or special process. Peduncle of uropod 1 normally elongate, without apicoventral spike, with special enlarged apicolateral spine, [?peduncular apices of uropods 1–2 not combed], inner ramus of uropod 1 with marginal spines in row, some rami continuously spinose to apex, inner ramus of uropod 2 especially shortened. Uropod 3 ordinary, elongate article 2 of outer ramus carrying 2 long apical setae. Telson ordinary, with only one apical spine on each lobe plus setules.

DESCRIPTION.—Rostrum fully developed. [Fuzz and calceoli on male antennae unknown. Prebuccal parts unknown. Right lacinia mobilis unknown;] mandibular palp medium to thick, article 1 short, article 2 with outer setae, apex of article 3 oblique. Lower lip bearing cones. Outer plate of maxilla 1 with 9 spines, one spine especially thickened. Inner plates of maxilliped especially thick, ordinarily setose. Coxae 2–4 without special anterodorsal humps. All posterior spines on article 6 of pereopods 1–2 probably thin and stiff, [midapical spine or seta unknown]. Article 2 of pereopod 5 without facial setae. [?Peduncle of uropod 1 with dorsolateral spines confined apically], medial spines confined apically, peduncle of uropod 2 with 2 elongate medial setae confined apically, peduncle of uropod 3 lacking extra subapical setae or spines. Telson with ordinary pair of midlateral or dorsal setules on each side.

TYPE-SPECIES.—Pontharpinia stimpsoni Stebbing, 1908 (here selected; monotypic).

COMPOSITION.—Unique.

RELATIONSHIP.—Basuto resembles Mandibulophoxus but differs in the multisetose article 3 of antenna 2, as in Pontharpinia, the highly narrowed article 2 of pereopod 3, as in the harpiniin genera, has a small inner ramus on uropod 2, two long setae on the medial peduncle of uropod 2, a more enlarged gnathopod 2 and a telson bearing only one apical spine but with normal midlateral setule pairs. This genus is named for a region in southern Africa. Masculine.