Typhlopone Curtisii , Shuck. Ann. & Mag. Nat. Hist. v. 265 (1840).
Cosmacetes homalinus . Spin. Mem. Accad. Torino, xiii. 71 [[worker]].
Hab. Brazil (Para).
Typhlopone Thwaitesii , Shuck. Ann. & Mag. Nat. Hist. v. 326 [[worker]] (1840).
Hab. Sugar-casks from South America.
Typhlopone Westwoodii , Shuck. Ann. & Mag. Nat. Hist. v. 266 [[worker]] (1840).
Hab. South America.
Typhlopone , Westw. Introd. Class. Ins. ii. 219 (1840).
Labidus (Typhlopone) , Shuck. Ann. & Mag. Nat. Hist. v. 326 (1840).
Cosmacetes , Spin. Mem. Accad. Torino, xiii. 70 (1853).
Head oblong, more or less emarginate behind, nearly as long as the thorax; eyes and ocelli obsolete in the workers. Antennae subclavate, about the length of the head, 10-jointed; the scape nearly as long as the flagellum, and subclavate; mandibles curved, acute at their apex; the labial and maxillary palpi 2-jointed. Thorax oblong, much narrower than the head, a deep transverse suture separating the pro- and mesothorax; the legs stoutish, all the tibiae with a calcar at their apex; the claws of the tarsi simple. Abdomen elongate-ovate; the node of the peduncle quadrate, of the same width as the base of the abdomen, which is truncate.