52 
INSECTA SAUNDERSIANA. 
amongst the numerous specimens of Pt. elongatus which I have observed, 
no specimen possessed antennae as long as the body, while in this species 
they are longer. I have seen males one-tliird smaller, having these organs 
as long as in the large specimens. Is this species invariable in this 
character? Those of the females are rather longer, approaching in length 
nearly to the posterior carina. 
Thorax in both sexes shorter (the breadth in the male T 8 0 , in the 
female T 9 0 of the length, also broader in proportion to the elytra, which are 
rather broader, less conic and more rounded at the sides, more convexly 
and thickly inflected at the sides, scarcely less impressed on the disc. The 
posterior carina is less curved at each side, and more narrowly interrupted 
in the middle. 
Scutellum proportionally longer and narrower, or (but a little broader 
than long) shortly ovate-subquadrate. 
Elytra evidently less rounded at the base of each, subtruncate, or, con¬ 
jointly slightly emarginate in the middle, their basal margin equal, depressed ; 
they are proportionally narrower at the shoulders, which are more rounded 
and not so much widened in proportion to the thorax and their width in 
the middle: the sides slightly narrowed towards the apex, which is more 
obtusely rounded; less horizontal lengthwise or slightly convex from the 
base to four-fifths of the length, more inflected posteriorly to the callosity, 
which is less elongate (though also conic), and scarcely extended beyond 
the perpendicular level of the apex: this is, as in the preceding species, 
perpendicularly, subemarginately and shortly cut under the callosity. 
Seen from above, they are in the males less angularly emarginate 
(apparently) between the callosities, and in the females they seem hardly 
emarginate; while in the females and minute males of the preceding they 
are evidently emarginate, although less so than in the large males. 
Abdomen scarcely denuded in the middle, showing also the denuded 
maculae at the base of the three posterior segments, as in the preceding. 
I have seen a number of specimens of this species. 
