Genus Antrimpos Münster, 1839

TYPE SPECIES. — Antrimpos speciosus Münster, 1839, by subsequent designation of Glaessner(1929).

TRANSLATION OF THE ORIGINAL DIAGNOSIS (from Münster 1839). — Antennules short; antennae very long, with a very long scaphocerite; chelate P1-P3, increasing in length, with movable dactyli; cylindric flattened cephalothorax; rostrum dentate; pointed telson and subrounded uropodal exopod.

TRANSLATION OF THE EMENDED DIAGNOSIS (from Oppel 1862). — Antennules very short, of different length, antennae of twice the length of the body, rostrum dentate, spiny Mxp3; chelate P1-P3, increasing in length, and achelate P4-P5; S5 longest; cuticle smooth except on the dorsal area of the carapace, which is covered with small pits.

TRANSLATION OF THE EMENDED DIAGNOSIS (from Van Straelen 1925). — Rostrum dentate – often on both sides; antennules of different length; antennae to twice length of body; chelate P1-P3 and achelate P4-P5.

EMENDED DIAGNOSIS (from Glaessner 1969). — Antennules very short, antennae to twice length of body, rostrum dentate, carapace smooth, thin; length of pereiopods increasing from 1 to 3; 6 th abdominal somite longest.

EMENDED DIAGNOSIS (from Schweigert et al. 2016). — Carapace subrectangular, laterally flattened; rostrum elongate slightly turned upward distally, with nine dorsal teeth and one ventral tooth distally; epigastric tooth; Mxp3 short and smooth; uropodal exopod with a subrounded diaresis.

EMENDED DIAGNOSIS (present work). — Carapace subrectangular, laterally flattened; elongate rostrum slightly turned upward distally, with several dorsal teeth and one ventral tooth; longitudinal rostral carina; epigastric tooth; postorbital spine; very strong and asymmetrical hepatic spine, with elongate dorsal segment and short ventral one; concave cervical groove rimming the upper segment of hepatic spine; subhorizontal hepatic ridge below hepatic spine; s1-s3 with rounded median lateral processes (subtle in s3); Mxp3 short and smooth; chelate P1-P3, increasing in length, achelate P4-P5; uropodal exopod with a subrounded diaresis.