1898.] of the Coleoptcra of South Africa. 395 



wanting, behind the transverse sulcus the base is convex, with four 

 grooves ; elytra Ijroader than the prothorax, longer than broad, 

 shoulders oblique and dentate, dorsal sulcus terminating at the 

 median part, sides hardly rounded ; first dorsal segment not larger 

 than the following one, with two very divergent and strong cari- 

 nules, including about the fourth part of the disk ; metasternum 

 longitudinally depressed ; intermediate trochanters having at 

 the base a short and recurved spine, posterior ones with a small 

 longitudinal carinule ; posterior tibiae with a small spur ; last 

 ventral segment large and transversely depressed. Male. Length 

 2-10 mm. 



This species is closely allied to B. capcnsis and B. microcephala. 

 From B. capcnsis it differs by the smaller size, the head less 

 attenuate in front, and the prothorax less deeply sinuated behind 

 the middle. From B. microcephala it differs by the head a little 

 attenuated, whilst in microcephala the sides arc parallel and the head 

 is altogether smaller. 



I do not know the female of B. algoensis, but I think it must be 

 very similar to the female of B. microcephala, and probably very 

 difficult to distinguish. Although the females of these three species 

 are very similar to each other, the identification of the males will 

 not be difficult, a very frequent case in Pselaphidce. 



Hah. Cape Colony (Port EHzabeth). 



Eaffrayia myrmecophila, 



Plate XVIII., fig. 2. 



Sub-elongate, entirely testaceous (one example, perhaps immature), 

 covered with a white pubescence ; head small, trapezoidal and 

 transverse, frontal part somewhat depressed in the middle, between 

 the eyes are two deep grooves, and before the front two other ones 

 much smaller and much more closely set, no sulci ; vertex carinate ; 

 eyes small ; antennae robust, second joint quadrate, third triangular, 

 as long as broad, fourth to eighth very transverse, the fifth is the 

 largest, and from the fifth to eighth the joints decrease in size, ninth 

 is much narrower, transverse, tenth larger, more transverse, eleventh 

 large, briefly ovate with the apex somewhat cone-shaped ; prothorax 

 much larger than the head, cordiform, sides rounded and made 

 sinuose after the median part by a very strong lateral fovea, median 

 fovea moderate, transverse sulcus not very deep and very little 

 angular, longitudinal sulcus very faint and only conspicuous in the 

 anterior part of the disk, base with two small foveae ; elytra a little 



