254 PERCY SLADEN TRUST EXPEDITION 
and several confluent spots further back at each side of the centre, an irregular stripe 
running down to the carima on each side of the disc bounding a posterior grey-white 
median patch; a subapical black lateral patch in front of the lateral carina. On the 
elytra the black markings form a very irregular net-work, the grey-white pubescence 
being predominant ; there is a somewhat larger spot on each elytrum between stripes 1 
and 3 in the centre, another below the shoulder and a third before the centre, the last 
two being limbal; the subbasal, very feebly convex, callosity bears some streaks or 
a patch. 
In the g-antenna segment 3 is the longest, 4 to 7 are slightly shorter than 3, 
8 is a little shorter than 7 and as long as 9; 9 and 10 bear some longer pubescence 
beneath at the apex, but are not pilose. In the 9-antenna segments 3 to 5 slightly 
decrease in length, 6 equals 7, and 8 is shorter, being also shorter than 9. 
The prothorax is one-third shorter than it is broad and rather strongly convex, being 
planate in front of the carina but not impressed. ‘The dorsal carina is practically straight, 
not being obviously undulate, and its lateral angle, though being strongly rounded, is 
more distinct than usual in this genus. The elytra are less than twice as long as they 
are broad, the proportion of length to breadth being 8 : 5 in the type-specimen (2). 
Three $f and two 22. 
Loc. Silhouette: Mare aux Cochons, plateau and forest above it, IX. 1908. Mahé: 
Cascade Estate, 800—1500 ft. Type from Silhouette. 
Puiaosius, Schénh. (1826). 
Phleobius, Schénh., Disp. Meth., p. 36 (1826). 
An Old World genus, not represented in America and most abundantly developed in 
the Ethiopian Region. With the exception of a few forms with conspicuous markings 
the species are difficult to distinguish. The pattern being in many instances almost the 
same, one has to rely on the details of structure in discriminating between the different 
species. However, the width and structure of the frons, the size of the eyes, the shape 
of the antenna, pronotum, pygidium and prosternum, the shape and the structure of 
the elytra and legs frequently offer easily recognised distinguishing characters. Some 
of the earlier species are still a puzzle to me, the descriptions not being sufficiently precise, 
and there exist in collections quite a number of undescribed species. The genus can con- 
veniently be divided into the following sections : 
A. Frons with median groove bounded by two low ridges, or rugate-punctate 
without groove : 
(a) Third segment of tarsi large-——Here belong P. alternans, Wied. (1819), 
P. albomaculatus, Allard (1895), P. albescens, Jord. (1895), and some undescribed forms. 
(b) Third segment of tarsi small, posterior angle of pleura of posterior abdominal 
segments projecting. —Here belong most species: P. gigas, Fabr. (1775), P. nigroungulatus, 
Gylh. (1833), P. ceylonicus, Jord. (1902), P. pallipes, Jord. (1895), P. pilipes, Jord. (1895), 
P. variegatus, Kolbe (1895), P. cordiger, Fahrs. (1839), P. humilis, Kolbe (1895), etc. 
