66 Descriptive Catalogue [1897. 



larger than the preceding ones and transverse, eleventh subglobose, 

 nearly conical and strongly acuminate ; prothorax larger than the 

 head, cordate, rounded laterally and not at all sinuate behind, lateral 

 foveas slightly elongate, transverse sulcus strong, slightly arcuate ; 

 elytra broader than the prothorax, short, shoulders rounded not 

 angular, hardly dentate, sides rounded, dorsal sulcus short ; abdomen 

 longer than the elytra, slightly attenuate at base ; first dorsal segment 

 large, impressed transversely at base but not conspicuously ; legs 

 moderately strong ; metasternum obsoletely impressed near the coxae. 



Male : Last ventral segment larger than the others, broadly but 

 not deeply impressed. Length l-30-l'40 mm. 



This species will be easily distinguished by the rounded head with 

 the sulci thin, shallow, and arcuate, the antennge decreasing in size 

 from the median to the apical joints, and the intermediate ones which 

 are compressed. 



Found by sifting dead oak-leaves. 



Hah. Cape Colony (Cape Town neighbourhood). 



Eaffkayia vaeiabilis, 

 Plate XVI., fig. 3. 



Closely allied to the preceding species and very much like ; head 

 convex with the sides oblique, rectilinear, sulci strong, broad, deep, 

 rectilinear, oblique, vertex moderately raised between the sulci and 

 carinate lengthways ; antennae slender, intermediate joints less trans- 

 verse and compressed than in the preceding species ; prothorax 

 narrower, less rounded laterally ; elytra a little narrower and less 

 rounded laterally. 



Female : Eyes very minute ; elytra attenuate at base, without 

 humeral angles and rounded laterally ; metasternum convex and 

 simple. Length 1-20 mm. 



Male, typical form : Eyes large ; under part of head deeply 

 excavate transversely, bottom part of excavation finely and trans- 

 versely carinate in the anterior part with the posterior edge produced 

 in the middle and carinate ; elytra rather elongate, hardly attenuate 

 at base, humeral angle subquadrate and well defined ; last ventral 

 segment impressed. Length 1-20-1 -30 mm. 



Male (var. /3) : Similar to the type form ; head also excavate under- 

 neath, but eyes as small as in the female ; elytra less quadrate at the 

 humeral angles. 



Male (var. y) : Entirely similar to the female ; head not excavate 

 underneath, last ventral abdominal segment impressed. Length 

 1-20 mm. 



R. variabilis is very closely allied to B. inccrta, and it is difficult 



