Anonyx affinis
Based on female: Antenna 1 subequal to antenna 2; flagellum article 1 distinctly elongate; calceoli absent. Eyes large, suboval or reniform. Lateral cephalic lobes subacute. Maxilliped palp 4-articulate; inner plate poorly developed, not reaching half length of outer plate.
Gnathopod 1 subchelate coxa large, about as long as coxa 2, subrectangular, with straight anterior margin; ischium short; carpus short, of subequal length to propodus; propodus longer than broad, margins tapering, palm acute to extremely acute; dactylus well developed. Gnathopod 2 subchelate; carpus longer than propodus; dactylus minute. Pereopod 5 coxa equilobate; basis distinctly longer than broad. Coxa 6 equilobate.
Epimeron 1 anterodistal corner quadrate; epimeron 3 posterodistal corner produced, forming a small spine. Urosomite 1 with dorsal depression, carinate dorsally. Uropod 1 and 2 rami subequal; uropod 2 inner ramus without marginal constriction(s); uropod 3 outer ramus 2-articulate, article 2 short, rami distinctly unequal. Telson distinctly longer than broad, deeply cleft.
13 mm.
There is much confusion regarding this species. The original description by Ohlin (1895) is not detailed enough for individuals of this species to be identified with certainty. The location of the type specimen is unknown and thus it is impossible to accurately redescribe this species. The description by Just (1980) differs from that of Ohlin (1895) in a number of points including the shape of the lateral lobes, length of the accessory flagellum, length of uropod 1, and length of uropod 3 inner ramus. However, as noted by Just (1980), his description is based on a mature male (10 mm) whereas the original description of Ohlin is based on a mature female of 13 mm. Some of the differences mentioned above, specifically the shape of the lateral lobes and the length of uropod 3 inner ramus, are commonly occurring sexually dimorphic characters among the Lysianassoidea. The description given above is based on a specimen from the ZMUC, labelled as ‘Anonyx affinis’ and fitting the description given by Just (1980).