new Species of Histeride. 193 
Short-oval, black above, dark reddish brown beneath, legs 
red; the head rather feebly punctured with points of varying 
sizes, frontal stria complete, angulate on the anterior ocular edge 
and then passing obliquely to the front, it is short and straight 
behind the clypeus, within the anterior part of the stria there 
is a faint impression seen only in certain lights, the clypeus 
is transverse and convex on the anterior edge; the thorax 
narrowly carinate laterally, carina continued as a stria behind 
the head, surface irregularly punctured, points dispersed and 
of varying sizes, the largest are arranged chiefly along the 
base ; the elytra—striz, subhumeral external is represented 
by a well-marked complete marginal carina, internal absent, 
1-4 and sutural complete and crenulate, fourth and sutural 
joined at the base, 5 shortened at the base to the width of an 
Interstice ; the propygidium, the punctuation is similar to the 
head, except that the larger punctures are close and more 
numerous ; the pygidium, punctuation much less conspicuous ; 
the prosternum bistriate, striz diverging at both ends, more 
widely at the base, which they touch; the mesosternum 
acutely pointed, marginal stria strong and complete, with a 
second very fine stria between it and the anterior edge, the 
last scarcely meets in the middle, transverse stria is feebly 
bent and crenulate; the metasternum has a cluster of large 
punctures at either posterior angle, and the first abdominal 
segment has a row along its anterior edge. 
This species is shorter (more approaching a circular form) 
than P. meridianus, Lew., and the fifth dorsal stria is longer 
and the colour different. P. nigrella, Sch., is also evidently 
similar, but Schmidt’s species has a deep frontal impression. 
Hab. Salisbury (alt. 5000 feet), Mashonaland. ‘Taken in 
Fungi by Mr. Marshall. 
Triballus agrestis, Marseul. 
I have two specimens from Cameroon which I think are of 
this species, but they are not the species so named by Marseul 
and taken by Rafiray at Zanzibar, and distributed many 
years ago by me as 7’. agrestis. In his description of 
I’. agrestis Marseul says nothing about the mesosternal trans- 
verse stria. Inthe Cameroon species the mesosternal stria is 
bent and crenulate and consists of thirteen or fourteen crenu- 
lations; the Zanzibar species is similar, but has sixteen or 
seventeen crenulations. Marseul, in his description, not 
mentioning this stria, the question of specific identity can 
only be decided by a comparison with the type, which is in 
Paris. In 7. corpulentus, Lew., the stria is straight, as 
