_Under Side._ Breast and thighs yellow. Abdomen striped with yellow and dark brown. Anterior wings brownish black, with the same yellow spots and marks as on the upper side. Posterior wings brownish black, with six yellow spots near the external edge, having a mark of orange in the middle of each, above which is a row of orange crescents joined together, whose upper edges are silver, and below each of them is a black circular spot, whose inner part is a fine shining blue, from whence appears a great number of powder-like gray spots. The anterior edge next the shoulders, has a small orange streak, near which an orange-coloured line begins, running parallel with the abdomen. {36}The caterpillar is described by Boisduval as living upon several species of Laurus, and of a green colour, with pale blue spots, and scarlet belly and legs, with a scarlet eye-shaped spot on each side of the third segment. The chrysalis is gibbous, ferruginous on the back, with the belly rose-coloured, and four rows of pale blue dots. I have reverted to Drury's specific name, which has certainly the priority, as appears from the dates which I have introduced amongst the synonyms. Dr. Boisduval has given another species of this genus under the name of Palamedes, described by Fabricius under that name, but considered by him to be a Nymphalis. This latter species must consequently receive a new denomination. MELITÆA PELOPS. Plate XIX. fig. 3. 4. ORDER: Lepidoptera. SECTION: Diurna. FAMILY: Nymphalidæ, _Swains._ GENUS. MELITÆA, _Fabr._ Argynnis, _Latr. God._ Papilio (Pleb. rur.), _Drury_. MELITÆA PELOPS. Alis subrotundatis, integerrimis, suprà fulvis nigro reticulatis; posticis subtùs carneis fusco undatis. (Expans. Alar. 1 unc.) SYN. Papilio (Pleb. rur.) Pelops, _Drury, App. v._ 2. Argynnis Pelopsa, _Latr. et God. Enc. Méth._ ix. _p._ 290. _No._ 62. HABITAT: St. Christopher's (_Drury_). _Upper Side._ Thorax and abdomen brown, the latter spotted with faint brown orange. Wings black, with several rows of large brown orange spots, crossing the wings, of different shapes and sizes. _Under Side._ Anterior wings orange brown, spotted with black, having the appearance of indented lines running across them. Posterior wings dark flesh-coloured, marked and spotted with brown, and having five minute silver spots at equal distances, parallel with the external edge. The wings are entire. HESPERIA ARCAS. Plate XIX. fig. 5. 6. ORDER: Lepidoptera. SECTION: Diurna. FAMILY: Hesperiidæ, _Steph._ GENUS. HESPERIA, _Latr. Godart_. Battus, p. _Scop._ Papilio (Pl. ruric), _Linn._ HESPERIA ARCAS. Alis nigricantibus immaculatis, margine integro, anticis subtùs margine interno dilutiore maculâ parvâ unicâ albâ. (Expans. Alar. 1 unc. 9 lin.) SYN. Papilio (Pleb. ruric.) Arcas, _Drury. App. v._ 2. Papilio (Pl. urb.) Philemon, _Fabr. Syst. Ent. p._ 534. _No._ 392. _Ent. Syst._ III. 1. _p._ 346. _No._ 314.