[Illustration: Fig. 3. _Larinus mellificus_, Jekel.] Very similar to _L. Onopordinis_, but proportionably more elongate and less convex; rostrum and thorax longer; pilosity of the body underneath much thinner and shorter; thighs thicker, more clavate, the anterior evidently costate-rugose underneath; without whitish marks on the elytra, and without that layer of light-brown earth-like pollinose transudation which is often wanting in rubbed specimens of _Larinus Onopordinis_. The freshest specimens have the griseous margin of the elytra, which parts from the base under the shoulder, obliquely and angularly ampliate interiorly towards the middle, where it reaches the second stria. This griseous pilosity fills all the tips of the elytra, leaving bare only the sutures, an angular notch behind the middle (which forms with that apical part of the suture a kind of hook on each elytron), and two round spots, one submarginal fronting the tip of the notch, the other larger, discoidal, behind the foot of the notch, much above the tip. FOOTNOTES: [G] Comptes Rendus, 21 Juin, 1858, p. 1213. [H] Pharmacopoea Persica ex idiomate Persico in Latinum conversa. Lutet. Paris., 1681, p. 361. [I] This saccharine substance is noticed by Avicenna as _Zuccarum alhusar_ (Lib. ii. Tract. ii. cap. 756, ed. Valgr. Venet. 1564), and also by Matthiolus (Comm. in Lib. ii. Diosc. cap. 75). It is likewise referred to by Endlicher (Enchiridion Botanicum, p. 300), Royle (Illustr. of the Bot. of the Himalayan Mountains, vol. i. p. 275), Merat and De Lens (Dict. de Matiere Medicale, l. i. p. 467), &c. [J] Revue Pharmaceutique de 1856, par Dorvault, p. 37. [K] Comptes Rendus, 28 Juin 1858, p. 1276. Catalogue of the Heterocerous Lepidoptera collected at Singapore by Mr. A. R. WALLACE, with Descriptions of New Species. By FRANCIS WALKER, Esq., F.L.S. [Read Feb. 17, 1859.] Fam. URANIIDAE, _Westwood_. Gen. NYCTALEMON, _Dalman_. 1. Nyctalemon Hector, _White, Walk. Cat. Lep. Het._ vii. 1771. Inhabits also Borneo. Fam. AGARISTIDAE, _Swainson_. Gen. EUSEMIA, _Dalman_. 2. Eusemia maculatrix, _Westwood, Cat. Orient. Ent._ 67, pl. 33. f. 1. Inhabits also Hindostan and Java. 3. Eusemia mollis, _Walk. Cat. Lep. Het._ vii. 1774. Inhabits also Hindostan. Fam. ZYGAENIDAE, _Leach_. Gen. SYNTOMIS, _Illiger_. 4. SYNTOMIS ANNOSA, n. s. _Foem._ Cinereo-fusca; capite, antennis apice, humeris abdominisque maculis lateralibus albis; alis maculis quatuor vitreis. _Female._ Cinereous brown. Head white. Antennae serrated, white towards the tips. Thorax with a large white spot on each side in front. Abdomen somewhat compressed towards the base, with white spots along each side. Wings long, with the discal areolets from the base to beyond the middle mostly vitreous, but having the veins bordered with brown. Length of the body 9 lines; of the wings 22 lines.