172 RHYNCHOPHORA. 
(except in P. trifasciatus and P. quadrimaculatus) are inserted at the middle of the 
rostrum in both sexes; the metasternum is sometimes protuberant between the middle 
cox (P. canus and P. cretaceus) ; the femora are sharply dentate ; and the tarsal claws 
are almost contiguous at the base. The males usually have the first one or two ventr al 
segments depressed down the middle, and in one species (P. guadrimaculatus) the 
posterior tibie are strongly bisinuate in this sex. The smaller forms approach 
Pteracanthus. 
Metasternum more or less protuberant between the middle coxe. 
Prothorax and elytra uniformly clothed with small, hair-like, white or cinereous 
scales ; the elytra with the apical portion of the suture, and an oblique patch 
on the outer part of the disc, bare . . . Species 1. 
Prothorax and elytra with large chalky-white patches on “each ‘side, extending 
downward on to the lower surface . . . . «© 1. ee ee © e « 6) 6Species 2. 
Metasternum flattened between the middle coxe. 
Antenne (except in P. trifasciatus) inserted at about the middle of the rostrum 
in both sexes. 
Prothorax and elytra each with a large chalky-white lateral patch extending 
downward on to the under surface . . . . © 2. 2 we . . Species 3. 
Prothorax immaculate ; elytra with white marks or fascie extending down- 
; ward on to the under surface . . . . . os ew ee . . Species 4-6. 
Prothorax and elytra mottled with white and fulvous, their lateral portions 
white, like the under surface . . . . . . se ew ee . Species 7. 
Prothorax and elytra opaque; the prothorax with an oblique yellowish- white 
stripe on each side, the two stripes coalescent at the apex; the elytra 
uneven, mottled on the disc with fulvous and black. . . . . . . . Species 8. 
Prothorax with the anterior portion, and the head in front, carmine-red ; elytra 
with the apex spotted or bare. . . . 2... a . . . Species 9, 10. 
Prothorax only with the anterior portion carmine-red ; elytra with a large 
black patch at the base enclosing two white spots, the apex immaculate . Species 11. 
Prothorax and elytra variegated with ochreous, white, and black; the prothorax 
nodose and bifoveolate on the disc anteriorly. . . . ...... Species 12. 
Prothorax and elytra faintly mottled with ochreous and white, opaque; the 
prothorax nodose on each side. . ss 6 2s 0 Species 13. 
Prothorax with three interrupted lines, and the elytra with a common sub- 
apical fascia, ochreous ; the elytral interstices interruptedly costate . . Species 14. 
Prothorax ochreo-vittate on each side; elytra each with one or two spots on 
the fourth interstice, and a lateral patch extending downward on to the 
metasternum, white . se ee ew ew ww ee 6Species 15. 
Antenne (¢') inserted near the apex of the rostrum ; prothorax conical; elytra 
each with two black spots; posterior tibie (¢) strongly bisinuate Species 16. 
1. Peridinetus canus, sp.n. (Tab. X. figg. 14, 14a, ¢ ) 
Oblong-rhomboidal, shining, black; thickly clothed above and beneath with minute, hair-like, white or 
cinereous scales, with the following parts almost bare: the head (except around the eyes), a space down 
