Mr. 0. 0. Waterliouse on new African Coleoptera. 107 



XII. — On some Eastern Equatorial African Coleoptera col- 

 lected by Enu'n Ptutha, with Descriptions of two new Longi- 

 cornia. By CiiARLi:s O. Waterhouse. 



[Plate I. fig. 3.] 



The British ^Inseum has hitely received a series of insects 

 from Eastern Africa, collected by Emin Pasha. Among 

 tliem there is a mixture of East- and West-African species, as 

 observed in my former paper (Proc. Zool. 8oc. Lend. 1»88, 

 p. 86) on the Coleoptera from the same source. Among the 

 Longicorns the following may be noticed : — Anoplostetha 

 l<icfator, F., Lophoptera asperula, White, Natal species ; 

 Xystrocera niyrita, Serv., Fhryneta obscura, 01., and Mecha 

 hecate^ Chevr., West- African species. 



Cerambicidae. 

 Plocopderus Emini^ sp. n. (PI. I. fig. 3.) 



Piceo-niger, parum nitidus, pube flavo-giisea vestitus. Ei)istomo 

 sat profunde emarginato ; anteiiuis corpore longioribus, articulo 

 basali erasso, rugoso, latitudine duplo longiore, basi vix angiis- 

 tato ; thorace sat brevi, disco depresso, oblique plicato ; cl3'tris 

 rufo-piceis, basi, sutura marginequc laterali reflexo nigrescentibus, 

 ad apicem truucatis, angulo suturali acute spinoso, angulo extemo 

 obtuse angulato. S • 



Long. 20 lin. 



This fine species is nearest to P. fucatus, Dej., but is larger 

 and less convex, and differs from th at and all its allies in the 

 colour of the elytra. The antenna^- have the basal joint very 

 large, not quite twice as long as broad, with an obtuse ridge 

 in front, extending to the middle of the joint. The third to 

 sixth joints are swollen at the apex, with an acute angular 

 projection ; the swelling at the apex of the seventh joint is 

 less and the angular projection less acute. The thorax has 

 the disk much Hatter than in P. fucatas, clothed with pale 

 sandy pubescence ; with a tine longitudinal carina in front, 

 and a tine transverse straight carina at the middle (angulated 

 in its middle), and a longitudinal smooth space behind the 

 middle ; the rest of the surface is marked by some undulating 

 more or less oblique pleats. The elytra are less convex than 

 in P. J'ucatus, very closely and very finely and evenly punc- 

 tured, with larger punctures interspersed. The prosternal 

 process has its apical portion almost parallel and very dis- 

 tinctly bituberculate. 



