new Coleoptera from East Africa. 20 1 



shining, rather finely reticulate-striolate, with a median stripe 

 of white scales. Anterior tibial simple. Tarsi very long. 

 Body beneath shining, sparsely clothed with greyish-white 

 pubescence. Four lateral whitish spots are visible from 

 above. 



One of the specimens has the pubescence above rather 

 more yellow. 



Length 6-7 lines. 



Polyplastus ovatus, sp. n. 



Oblong-ovate, moderately convex, shining, black. Thorax 

 and scutellar area of elytra reddish yellow. Head with the 

 forehead strongly punctured in the middle ; the epistome 

 closely and rugosely punctured, slightly narrowed in front, 

 very gently emarginate. Thorax gently convex, a little 

 broader than long, narrowed anteriorly from the middle, the 

 posterior angles slightly projecting, but not very acute ; the 

 base broadly lobed in the middle, sinuate on each side. The 

 punctures on the surface are rather large and not very close 

 together. There is a black spot on each margin in front of 

 the middle. Scutellum as long as broad, curvilinear, with a 

 few very fine punctures. Elytra very strongly grooved, the 

 grooves catennate-punctate and rather dull ; the interstices 

 very convex except near the base, of unequal width ; the 

 second broad at the base, very narrow at the apex, the fourth 

 much narrower than the third and fifth, the sixth very narrow 

 posteriorly. Pygidium prominent, densely and finely strio- 

 late. Anterior tibia? with three small teeth, the second and 

 third near together. Tarsi not very long. Mesosternal 

 process slightly prominent, rounded. Body beneath shining, 

 with few punctures. 



Length 8 lines. 



This species must, I think, be congeneric with Polyplastus 

 assuarius, Janson. It is, however, a more robust and more 

 convex insect, in which respect it resembles Myoderma. The 

 form of the head is quite unlike any species of that genus, but 

 resembles that of Polyplastus. 



The discovery of this species is of great interest as showing 

 more clearly the affinity of Polyplastus with the Trichiidae. 



CerambycidaB. 

 Lygrus trifasciatus, sp. n. 



Long, narrow, depressed, dull, brown. Head densely 

 punctured, appearing granulose on the vertex ; the face and 

 Ann. & Mag. X. Hist. Ser. 7. Vol. ii. 19 



