156 Mr. M. Jacoby’s descriptions of some new 
It is probable that this small species is the repre- 
sentative of a new genus on account of the differently 
structured metasternum, the more slender legs, and long 
tibial spine. I have, however, provisionally placed it in 
Spheroderma, with which it agrees in shape. 
Sebethe marginipennis, n. sp. 
Flavous, the apical joints of the antenne fuscous; thorax dark ° 
fuscous, the lateral margins flavous ; elytra finely punctured, nearly 
black, the lateral margins and a small spot before the middle of 
each elytron flavous. Length, 13 line. 
Head impunctate, the vertex fuscous, the lower portion flavous, 
frontal tubercles strongly raised, the carina raised into an acute 
ridge; antenne extending beyond the middle of the elytra, the 
lower four joints flavous, the rest darker, the third joint one-half 
longer than the second, slightly shorter than the fourth joint; 
thorax rather more than twice as broad as long, with a rather 
broad flattened margin, the latter flavous, the disc nearly black, 
impunctate ; elytra widened towards the middle, very finely but 
not very closely punctured, black, shining, the lateral margins 
narrowly, the apex more broadly, flavous; a small flavous spot is 
placed immediately before the middle on each elytron ; under side 
and legs flavous, the posterior femora infuscate. 
Hab. Sumatra. 
Xenidea fulvicollis, n. sp. 
Piceous; the head, antenne, thorax, and the four anterior legs 
fulvous; thorax impunctate; elytra purplish, finely punctate- 
striate, the interstices at the sides costate. Length, 13 line. 
Head impunctate, fulvous; the eyes large, with a short longi- 
tudinal groove near the inner margin, the frontal elevations absent, 
the carina acutely raised; antenne slender, fulvous, the apical 
joint fuscous; thorax nearly twice as broad as long, the sides 
straight, the anterior angles oblique, the posterior margin but 
slightly produced at the middle, the surface not perceptibly punc- 
tured, slightly wrinkled, with a very obsolete depression at each 
side near the base ; scutellum piceous ; elytra purplish blue, with- 
out any basal depression, rather finely punctate-striate, the inter- 
stices distinctly costate at the sides; under side piceous, the 
~hdomen fulvous at the sides, as well as the legs; posterior femora 
alish. 
New Guinea, 
