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Show 1890.] COLLECTED BY MR. BONNY. 639 distinct on either side of the suture at the base, the interstices smooth and quite flat; beneath black, the ventral segments finely and somewhat thickly punctured and longitudinally wrinkled along the middle; legs pitchy black, the femora dark castaneous at the extreme base; the anterior femora thickened to beyond the middle, and the anterior tibiae somewhat strongly curved inwards, in the male. Length 18, breadth 7| millim. (<$ .) One example in Mr. Bonny's collection; a second, from Old Calabar, is contained in the National Collection. This species is closely allied to T. sinuatus (Fabr.), for a colour-variety of which it might be taken at first sight, more especiallv as the latter varies in the colour of the thorax. It differs, however, from that insect not only in colour, but in the broadly flattened interocular space of the head, the much shorter antennae in the male (not longer than in the female of T. sinuatus, with the penultimate joints more transverse and the apical joint relatively longer), the shorter legs, and the more finely and much more obsoletely striate-punctate elytra, the latter not grooved within the lateral margin (in T. sinuatus the margin is accompanied by a groove which becomes deeper and more distinct towards the apex). The species is interesting from the fact of there being a large Erotylid with similarly coloured elytra in the same region in which Mr. Bonny's collection was made ; the peculiar markings are very distinct and sharply defined, the allied forms, Nyctobates bifasciatus, Quedenf., excepted, being all of very sombre colours. CHIROSCELIS, Lam. CHIROSCELIS PASSALOIDES. Chiroscelis passaloides, Westw. Trans. Z. S. iii. p. 210, t. f. 3; Arcana Ent. ii. p. 160, t. 87. f. 4. Three specimens. ODONTOPUS, Silb. ODONTOPUS OBSOLETUS. Odontopus obsoletus, Thorns. Arch. Ent. ii. p. 90 (1858). One female specimen. This nearly agrees with a male example in Mr. F. Bates's collection, except that it has the punctuation of the upper surface still more obsolete, the thorax being almost im-punctate, and the elytra shallowly, finely, and sparsely punctate. PYCNOCERUS, Westw. PYCNOCERUS COSTATUS. Odontopus costatus, Silb. Rev. Ent. i. pt. 2, no. 4 (1833) ; Casteln. Hist. Nat. Ins. Col. ii. p. 213. Two specimens. P. exaratus, Harold, seems to be a closely allied species. 43* |