Head black; face vertical. Antennæ black, and about the length of the insect. Thorax black and rugged, with two obtuse spines on each side. Scutellum small, black and triangular. Elytra black, rounded and margined at the sides and suture, extending beyond the anus; being rough next the thorax, with a multitude of small round pustules. Each elytron has four red bars crossing it, placed at equal distances, and inclining toward each other; the two first, next the thorax, almost joining at the suture; the two last separated by a small space. In some specimens there are five of these bars. Abdomen and breast black; the latter having between the middle and hinder feet, two oblong red spots. Legs black. Tarsi cushioned beneath and lighter coloured.
CERAMBYX (CALLICHROMA) AFER.
Plate [XXXIX]. fig. 4.
Order: Coleoptera. Section: Longicornes. Family: Cerambycidæ, Leach.
Genus. Cerambyx, Linn. Subgenus. Callichroma, Latr.
Cerambyx (Callichroma) Afer. Thorace rotundato spinoso, corpore viridi, suturâ elytrorum aureâ, antennis pedibusque rufis. (Long. Corp. 10½ lin.)
Syn. Cerambyx afer, Linn. Mant. p. 532. Fabr. Syst. Ent. 166. 9. Ent. Syst. 1. II. p. 252. 4. Syst. Eleuth. II. p. 268. 7. (C. ater, lapsu calami.) Sch. Syn. III. App. p. 150.
Habitat: Sierra Leone and Calabar.
Head golden green. Mouth and palpi dirty orange. Eyes black. Antennæ longer than the insect, orange brown. Thorax round, golden green, with many small lines or waves crossing it; and having on each side an obtuse spine. Scutellum small and triangular, golden green. Elytra margined, extending beyond the anus; and, next the thorax, of a golden green, but becoming less brilliant towards their extremities, where they are spineless, having a yellow narrow line running on each side the suture. Breast and abdomen golden green. Legs dark orange.