THECLA SIMAETHIS. Alis supra fuscis, nitidis, subtus flavo-viridibus, vittâ transversâ argenteâ, posticis apice ferrugineis strigâ è punctis margaritaceis. (Expans. Alar. 1 unc. 3 lin.) SYN. Papilio (Pleb. rural.) Simaethis, _Drury, App. v._ 2. _Herbst. Pap. tab._ 280. _f._ 3. 4. _Fabr. Ent. Syst._ III. 1. _p._ 286. _No._ 97. (Hesperia S.) _Latr. et God. Enc. Meth._ 9. 643. 97. (Polyommatus S.) HABITAT: Saint Christopher's (_Drury_). Surinam (_Fabr._) _Upper Side._ The wings are brown, tinged with blue. The cilia white, posterior wings with two tails like hairs, of a chocolate colour; the tips being white. _Under Side._ The anterior wings are green next the anterior edge, but along the interior one are of a greyish flesh colour. A narrow silver line begins at the anterior edge, about a third from the tips, and crossing both superior and inferior wings, meets near the extremity of the abdomen, running across the inferior wings in a very irregular, indented manner, and having its upper side verged with chocolate. The {4}posterior wings, above this line, are of a deep pea-green; but below it soften into a flesh colour, which continues along the external edge, from the upper to the anal corner; whence rises a jagged, indented, chocolate line, that runs across the wing, parallel with the silver line, whereon are several dark blue spots, shining like polished steel. Nearly allied to the common British species, Thecla Rubi. PLATE II. [Illustration] POLYOMMATUS THERO. Plate II. fig. 1. ORDER: Lepidoptera. SECTION: Diurna. FAMILY: Lycænidæ, _Leach_. GENUS. POLYOMMATUS, _Latreille et Godart_. Lycæna, _Fabr._ (Syst. Gloss. Synops. in Illig. Mag.) Papilio (Nymph. Phalerat.) _Drury_. (Pleb. rural.) _Linn._ POLYOMMATUS THERO. Alis dentatîs, suprà nigricanti-fuscis, fúlvo maculatis, posticis subtùs nebuloso-cinereis maculis linearibus nitenti-albis, maculà disci majori, apicibus uncinatâ. (Expans. Alar. lin. 1 unc. 9 lin.) SYN. Papilio (Pleb. rur.) Thero, _Linn. Syst. Nat._ 2. _p._ 787. _No._ 219. _Fabr. Ent. Syst._ III. 1. _p._ 274. _No._ 57. (Hesperia rural). _God. et Latr. Enc. Meth._ 9. 602. _No._ 154. Hesperia Erosine, _Fabr. Ent. Syst._ III. 1. _p._ 266. _No._ 28. Papilio Salmoneus, _Cramer, Ins. t._ 1. _pl._ 2. _f._ 1. Papilio Rumina, _Drury_, (exclus. syn. Linn.) HABITAT: Cape of Good Hope. _Upper Side._ The wings are dentated, and of a fine dark brown colour. The anterior having seven square discoidal red spots, of different sizes. The posterior ones are furnished with four short tails, two on each; above which are three small red spots.