402 



G. LEWIS 



dium are finely and sparingly punctulate with but little difference 

 in either sex, there is no other sculpture; the prosternum, the 

 keel is bistriate, striae not meeting at either end; the mesosternum 

 has a transverse stria thus / \ straight anteriorly and con- 

 tinued obliquely on either side ; the anterior tibiae are 4-dentate. 



Hab. Roca Infante Don Henrique, Island of Principe. Gulf of 

 (luinea. 



Ir^acliycraenis!! nigi'aiiss sp. ii. 



Oblongus, subparallelus, C07ivexus, niger, niiidus; fronte 

 concava, bistriata, stria post ice in medio retrorsum angulata; 

 pronoto undique punctato; elytris stri is 1-3 suturalique in- 

 tegris, 4 basi abbreviata, 5 prope dimidiata; propygidio 

 pygidioque parum dense lounctatis hoc apice laevi; prosterno 

 bistriato; mesosterno stria marginali in medio interrupta; 

 tibiis anticis 5-dentatis. - Lo7ig. 4 V2 '^iU- 



Oblong, rather parallel at the sides, convex, black and shining; 

 the head is concave in front with tw^o fine striae, the anterior 

 or marginal is arched and similar in form to that of P. cyanescens 

 Er., the second stria is transverse and crosses the middle of the 

 frontal concavity and bending towards the neck is angular in the 

 middle ; the thorax, marginal stria complete, the surtace is evenl}' 

 punctate throughout and there is a small shallow^ impression 

 behind the anterior angle; the elytra, the outer humeral stria is 

 complete, the inner is wanting, 1-8 dorsal and the suturai are 

 complete , 4 is abbreviated at the base , is apical and nearly 

 dimidiate, the suturai turns slightly from the suture at the base; 

 the propygidium is coarsely and closely punctate, on the pygidium 

 the punctures are slightly smaller and the apex is smooth; the 

 prosternum is bistriate, the striae widen out slightly at the base 

 but do not join at either end; the mesosternum, the marginal 

 stria is interrupted behind the acumination; the anterior tibiae are 

 o-dentate but the basal tooth is very small. 



This species differs from P. ritsemae Mars, by its colour, 

 the even punctuation of the thorax over its whole surface, by the 

 punctures of the propygidium being coarser and by the mesosternal 

 marginal stria more nearly meeting. 



Hab. X'djolè, French Congo. 



