478 Mr. A. Murray on Coleoptera from Old Calabar. 
5. Monohammus cordifer, Chevr. Rev. et Mag. d. Zool. 
18 . 490. 
Parvus, minute et ordine punctatus, griseus ; mandibulis apice, 
oculis maculaque subscutellari et cordiformi in elytris nigris; 
antennis longis, fuscis; elytris anguste truncatis, fasciola 
fusca ultra medium signatis 
Long. 4 lin., lat. 14 lin. 
Small, regularly and finely punctate, obscure ash-coloured. 
Head slightly inclined and longitudinally sulcate. Palpi 
brown, yellowish at the apex. Mandibles and eyes black. 
Antenne once and a half the length of the body ; the first article 
grey, and thefollowing ferruginous. "Thorax straight in front 
and behind, grooved on the anterior margin; lateral spine 
situated in the middle, tolerably strong and sharp. Scutellum 
semicircular, silky and ash-coloured. Elytra broader than the 
thorax, cut straight at the base, rectangular at the shoulder, 
parallel, narrowly truncate at the apex, marked with a black 
silky subcordiform patch behind the scutellum; an obscure 
obsolete transverse band which reaches to the margin is placed 
beyond the middle, and some small spots of the same colour 
are scattered here and there. Legs and body below of a uni- 
form ashy-grey colour; middle tibia emarginate on the outer 
side, and clothed with a pale villous pubescence. 
One specimen in my collection. 
6. Monohammus Thomsoni, Chevr. Rev. et Mag. d. Zool. 
1855, p. 184. PL. II. fig. 4. 
Affinis M. Lusce, Fab. Vage punctatus, fuscus; mandibulis 
oculisque nigris; capite longitudinaliter suleato; antennis 
pubescentibus, apice infuscatis; thorace transverso (cinereo 
breviter et dense piloso) antice posticeque recto, lateribus 
acute et valide spinoso; scutello albo; elytris cum macula 
communi magna scutellari alteraque laterali ampla virguli- 
formi atro-holosericeis (fcemina). 
Long. 93 lin., lat. 31 lin 
Allied to M. Lusce, Fab. Fuscous, irregularly punctate. 
Mandibles and eyes black. Antenne pubescent, with the 
apex fuscous. "Thorax densely covered with a cinereous pile, 
the sides armed with an acute and stout spine. Scutellum 
white. Elytra with a large, black, velvety, silky, scutellar 
patch common to both, and another large one on the sides. 
Named px Chevrolat, in accordance with my wish, in 
honour of Mr. W. C. Thomson, at that time missionary at 
L 
Old Calabar, now a medical practitioner in Liverpool, to whom 
