This insect (which appears to be a queen or female ant) is nearly allied to a very celebrated South American species, which, from visiting the houses of the inhabitants in great swarms, is termed the visiting ant. (Atta Cephalotes, Fabr.) The late Mr. Say, however, pointed out the differences between the two species in his manuscripts, which have been published in the Journal of the Natural History Society of Boston for 1836. PEPSIS SEVERA. Plate XLII. fig. 4. ORDER: Hymenoptera. SECTION: Fossores. FAMILY: Pompilidæ, _Leach_. GENUS. PEPSIS, _Latr. Fabr._ Sphex, _Linn. Drury_. PEPSIS SEVERA. Atra, alis fulvo-diaphanis apice fuscis, pedibus fulvis femoribus nigris. (Expans. Alar. 3 unc. 3 lin.) SYN. Sphex Severus, _Drury_, _App. vol._ 3. HABITAT: Coast of Africa. Head black. Tongue not observed. Palpi four. Eyes oblong, prominent and shining. Wings yellow-brown, diaphanous, the tips black. Thorax, abdomen, and thighs black. Tibiæ and tarsi yellow-brown. PLATE XLIII. [Illustration] MANTIS (HARPAX) OCELLARIA. Plate XLIII. fig. 1. ORDER: Orthoptera. SECTION: Cursoria. FAMILY: Mantidæ. GENUS. MANTIS, _Linn._ (SUBGENUS: Harpax, _Serville_.) MANTIS (HARPAX) OCELLARIA. Capite inermi, femoribus posticis lobo apicali, elytris viridibus ocello magno discoidali flavo nigro-cingulato. (Expans. Alar. 2 unc. 6 lin.) SYN. Mantis ocellaria, _Drury_, _App. vol._ 3. HABITAT: Coast of Africa. {58}Antennæ setaceous. The insect, when living, was probably green, but is now of a yellowish brown; the eyes, head, and thorax being of that colour. One-third of the tegmina, next the tips, is transparent, the remainder being green. In the centre is a yellow spot resembling an eye, encircled with black, whose centre is dark green, with a black margin at top. Wings transparent. Fore-legs yellow-brown. Femora strong, with two rows of spines, and a groove between to receive the tibiæ, which are furnished with a strong spine at the tip. Middle and hind legs having a small flap placed at the tips of the femora, and two tibial spurs. "This rare and beautiful mantis was found in a savanna."--_Smeathman._ PENTATOMA BICOLORATA. Plate XLIII. fig. 2. ORDER: Hemiptera. SUBORDER: Heteroptera. SECTION: Geocorisa. FAMILY: Pentatomidæ. GENUS. PENTATOMA, _Latreille_. Cimex, _Fabricius, Drury_. PENTATOMA BICOLORATA. Fusca, pronoti lateribus in spinam obtusam utrinque productis, scutello versus basin et ad apicem elytrorumque maculâ costali fulvis. (Long. Corp. lin. 7.) SYN. Cimex rostratus, _Drury_, _App. vol._ 2. La punaise à sept taches, _Stoll_, _pl._ 14. _fig._ 97. HABITAT: Sierra Leone (_Drury_). Coast of Guinea (_Stoll_).