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 castancous 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. (S •) 



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. siniiatus (Fabr.), for a colour-variety of which it 

 might be taken at first sight, more especially 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 bifusciatus, Quedenf., excepted, being all of very sombre 

 colours. 



Chiroscelis, Lam. 



Chiroscelis passaloides. 



C/iiroscelis passaloides, Westw. Trans. Z. S. iii. p. 210, t. 14. 

 f. 3 ; Arcana Ent. ii. p. IGO, t. 87. f. 4. 

 Three specimens. 



Odontopus, Silb. 



Odontopus orsoletus. 



Odontopus obsoletus, Thoms. 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* 



