SISENES. 133 
3. Fifth ventral segment very deeply and broadly emarginate (the emargination extending across two-thirds 
of the segment); the sixth with the lateral lobes large and spoon-shaped, these resting one over the other 
in repose and protruding beyond the fifth. 
Length 9-10 millim. (¢ 2.) 
Hab. Nicaraeva, Chontales (Belt). 
One male and five female examples. The thorax, elytra, and under surface vary in 
the extent of the dark markings, while the head is constant in colour in all the forms ; 
the elytra have at least the apex piceous or black. In the example with dark elytra 
the thorax is wholly reddish-yellow. 
4. Sisenes suffusus. (Tab. VI. fig. 12, 2, var.) 
Elongate, subopaque, finely and thickly pubescent, testaceous or flavo-testaceous ; the head with the basal 
half obscure eeneous and the labrum, tips of the mandibles, and eyes piceous, sometimes with the vertex 
only obscure seneous, sometimes entirely testaceous; the prothorax usually entirely testaceous or flavo- 
testaceous, sometimes with the disc or anterior portion more or less obscurely zneous; the scutellum testa- 
ceous ; the elytra very variable in colour—cyaneo-violaceous or greenish-seneous with a broad pale flavous 
vitta on the dise of each elytron extending from a little below the base nearly to the apex, entirely 
greenish-zneous, greenish-eeneous with an obscure stripe on each elytron at the base (or with the basal 
portion much suffused with) testaceous, or testaceous with the sides and apical third slightly suffused 
with greenish-eneous. Head densely and somewhat coarsely punctured, rather broader in the male; 
eyes small, rather convex, feebly emarginate, very widely separated in both sexes ; antenne very slender, 
long, and filiform, piceous, lighter towards the base, joint 2 rather more than one-third the length of 3, 
3 and the following joints very elongate and subequal; prothorax about as broad as long, the sides 
rounded in front and moderately constricted behind, the base grooved within and with prominent margin, 
the disc broadly and shallowly transversely depressed in front, with a rather large and deep oblique 
depression on each side just behind the middle, and a more or less distinct median ridge, the surface 
densely and rather coarsely punctured; elytra moderately long, subparallel, densely and rather coarsely 
punctured, and with two fine cost on the disc and one at the sides, the two outer ones nearly reaching 
the apex and the inner one extending to a little beyond the middle, the suture also raised; beneath flavo- 
testaceous, the venter sometimes stained with eneo-piceous, pubescent, shining, very shallowly and 
minutely punctured ; legs slender, testaceous, the tarsi, tibie, and the apical portion of the femora often 
more or less stained with piceous; joints 2-4 of the front and middle tarsi and 3 of the hind tarsi tomen- 
tose beneath. 
3. Fifth ventral segment narrowly and rather deeply emarginate; the sixth with the lateral lobes long and 
spoon-shaped and protruding beyond the fifth. 
Length 63-93 millim. (¢ 9.) 
Hab. Mexico, Cordova (Sallé); Guatemata, Sinanja and Chacoj in Vera Paz 
(Champion). 
Fifteen examples, three from Mexico, the rest from Guatemala; of these, four, one 
from Chacoj and three from Cordova (one of which is figured), have a well-defined pale 
flavous longitudinal vitta on each elytron, and the apex of the femora more distinctly 
marked with piceous, the Mexican specimens having the ground-colour of the elytra 
cyaneous instead of greenish-eneous, The numerous varieties are connected by various 
intermediate forms. 
