Mr. A. Murray on Coleoptera from Old Calahar. 435 



2. Macrotoma seneqalensis, Oliv. Ent. 66. p. 22. 

 no. 21, pi. 7. fig. 25. 

 Also rare at Old Calabar. 



Mallodon, Serv. 



Mallodon Dowyiesii^ Hope, Ann. & Mag, Nat. Hist, 

 ser. 1. vol. xi. p. 366. 



Tolerably abundant at Old Calabar. 



With the exception of one species peculiar to Arabia, part 

 of which, for the purposes of geographical distribution, may be 

 regarded as an appendage of Africa, the Mallodons are con- 

 fined to America and Africa. The other African species are 

 few in number, consisting of two from West Africa and one 

 from Madagascar, while those in America are more numerous, 

 lending force to the idea which other instances of the same 

 nature have already suggested, that, while there has been a 

 very considerable infusion of South-American blood into West 

 Africa, there has been comparatively little return from Africa 

 to South America. 



Cerambicidae. 



Ploc^derus, Thoms. 

 1. Phccederus nitidipennis. 

 Hanunaticherus nitidipennis, Clievr. Rev. et Mag. Zool. 1858, p. 50. 



Alatus, niger, nitidus ; capite antice trinodoso, carinula sulcata 

 inter oculos ; antennis 1"*° articulo elongato rubro, 2°-4™ 

 nigris, sequentibus fuscis, planatis, angulatis ; thorace 

 transverso, valde polito, antice posticeque recto et bis pli- 

 cato, angulo laterali medio valido obtuso ; scutello opaco, 

 semirotundato ; elytris laevissime punctulatis, glaberrimis, 

 nitidissimis, viridibus, ad latera et basin igneo vel violaceo 

 micantibus, subrecte parum truncatis ; corpore nigrofus- 

 cescente, leviter et in pectore dense pubescente, abdomine 

 nitidiore ; femoribus (basi et apice exceptis) tibiisque in 

 dimidia parte apicali rubris ; tarsis rufo-piceis. 



Long. 10-13 lin., lat. 3^-4 lin. 



Black. Head with three tubercles in front and a small 

 ridge between the eyes, which is grooved behind, retracted 

 behind into a sort of transverse neck, bearing on that part an 

 ill-defined punctation and transverse wrinkling. Antennae 

 with the first article thick, elongated, rugose, red, obscure at 

 the tip ; second very small ; third and fourth swollen at the 

 extremity ; all three black, those following brown, flattened 



