1. Cryptocerus atratus ^HNS. B.M.

Formica atrata, Linn. ^HNS Syst. Nat. i. 965. 16 [[worker]].

Fabr. Syst. Ent. 395. 24; Ent. Syst. ii. 363. 54.

Formica atrata, Christ ^HNS, Naturg. Ins. 516.

Oliv. Encycl. Meth. vi. 500. 49.

Latr. Hist. Nat. Fourm. 272. t. 12. f. 74 a [[worker]], 74 b [[queen]]. Formica quadridens, De Geer ^HNS, Ins. iii, 609, 7. t. 31. f. 17-20. Cryptocerus atratus, Latr. ^HNS Hist. Nat. xiii. 260.1.102. f. 1.

Fabr. Syst. Piez. 418. 1.

Klug, Ent. Mon. 260.1.

St. Farg. Hym. i. 170. 1.

Guer. Icon. Reg. Anim. 424. t. 69. f. 3.

Spin. Mem. Accad. Torino, 2nd ser. xiii. 63. 47 (1853).

Smith, Mon. Crypt. Trans. Ent. Soc. Land. 2nd ser. ii. 215[[male]] [[queen]] [[worker]],

Cryptocerus marginatus, Fabr. ^HNS Syst. Piez. 419. 2 [[queen]].

Cryptocerus dubitatus, Smith ^HNS, Mon. Crypt. Trans. Ent. Soc. Lond. 2nd ser. ii. 216 [[male]].

Hab. Brazil; Surinam; Cayenne.