PERIDINETUS. 177 
10. Peridinetus rufotorquatus, sp.n. (Tab. X. figg, 23, 23 a, ¢.) 
Subovate, rather shining, black or piceous, the prothorax with a brassy lustre, the antenne, tibiw, and tarsi, 
and sometimes the apex of the prothorax also, ferruginous; the anterior portion of the head and the 
anterior lobe of the prothorax (except in the middle behind) thickly clothed with hair-like, carmine-red 
scales, the base of the rostrum, vertex, and a narrow space down the middle of the posterior lobe of the 
prothorax, and another along each lateral margin, with ochreous or white hair-like scales ; the elytra— 
a narrow transverse scutellar patch, the humeri, and a sharply-defined transverse space at the apex 
excepted—closely set with very small, seriately-arranged, oval, brownish-ochreous scales, the second stria 
with a short white streak at the base ; the vestiture of the under surface very sparse, in great part white on 
the metasternum. Head shallowly sulcate between the eyes; rostrum arcuate, depressed at the base, very 
sparsely, minutely punctate, smoother in the 25; joint 1 of the funiculus longer than 2. Prothorax 
nearly as long as broad, conical ; the anterior lobe closely punctate, somewhat swollen on each side of the 
short, arcuate, prominent, median carina; the posterior lobe almost bare, transversely depressed in front, 
with a few scattered transverse punctures. Elytra comparatively broad, subtriangular, flattened, trans— 
versely depressed at the apex and obliquely so on the disc below the base; finely punctate-striate, the 
interstices (except at the apex) almost flat and densely punctulate. Ventral segments very sparsely 
punctate, 2-4 almost smooth. 
Length 3-4, breadth 12-2 millim. (¢ 2.) 
Hab. Mexico, Teapa (H. H. Smith); Guatremata, Chacoj and San Juan in Vera Paz 
(Champion). 
Fourteen specimens. Smaller and less elongate than P. coccineifrons ; the posterior 
lobe of the prothorax much smoother than the anterior lobe and almost bare, the 
anterior lobe arcuato-carinate ; the elytra with a sharply-defined, almost bare, depressed 
space at the apex, the interstices each with three or four rows of minute oval scales 
and not costate; the metasternum without ochreous lateral patch. 
If the sexes are rightly identified, the male is without definite ventral depression. 
11. Peridinetus letus, sp.n. (Tab. X. figg. 24, 24a, 9.) 
Subovate, black, the antenne, apex of the rostrum, head, and tibie more or less ferruginous ; the vestiture 
fine and close, that on the head and base of the rostrum sparser, fulvous or ochreous: the anterior 
portion of the prothorax carmine-red, the posterior portion black; the elytra with a broad, transverse, 
posteriorly rounded space at the base (extending outward to the sixth stria), enclosing a white spot on 
each side of the scutellum, and a patch at the sides below the humeri, black, the remaining portion 
ochreous, the alternate interstices faintly lineate with white towards the apex; the legs and under 
surface with scattered narrow whitish scales, the second ventral segment almost bare. Rostrum arcuate, 
stout, not longer than the prothorax, finely, sparsely punctate and feebly carinate, smoother in the Q. 
Joints 1 and 2 of the funiculus subequal in length. Prothorax transverse, the short anterior lobe narrow 
and tubulate, the posterior lobe transversely convex ; closely, minutely punctate, and subcarinate. Elytra 
much wider than the prothorax, triangular, flattened on the disc; finely punctate-striate, the interstices 
almost flat, densely punctulate, 7 throughout, and 9 from about the middle onward, feebly, narrowly 
costate. Ventral segments 1 and 2 depressed down the middle in the ¢. 
Length 41, breadth 2 millim. (¢ Q.) 
o 
Hab. Paxama, Bugaba (Champion). 
Two specimens. Near P. rufotorquatus, but with the prothorax differently shaped ; 
the elytra with a large black patch at the base (enclosing two white spots), the bare 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 5, May 1907. 2 AA 
