THE PsELAPHIDZ OF NorTH AMERICA. 291 
B. CRIBRICOLLIS, Srenvdel. Piceous-black, elytra dark 
piceous-red or black, legs, antennz and palpi red, or darker. 
‘The body is punctured all over, more deeply on the pronotum, 
punctures on the elytra oblong. Pubescence short, appressed. 
Length, 1.2 to 1.3 mm. 
flead, from the frontal margin to the base, equal to the 
width between the eyes; frontal margin but slightly produced 
in the middle, foveee equally distant, the lateral ones half the 
mutual distance from the eye. Disk punctulate, eyes circular, 
tempora arcuate, as long as the eyes. Antenne longer than 
- the head and prothorax, first and second joints equal in thick- 
ness, the first cylindrical, twice as long as wide, second oval, 
shorter; third to eighth equal in thickness, much narrower 
than the basal joints, third and fifth longer, equal, fourth, sixth 
and seventh equal in length, eighth quadrate, ninth and tenth 
_ obconical, truncate at their bases, strongly increasing in thick- 
ness, closely united. Last joint twice as long as wide, ovate- 
acute, truncate at base. Pyothorax convex, lateral fovez 
circular (elliptical when viewed from above), middle fovea 
oblong. /ytra broadly convex, shoulders high, protuberant, 
discal lines deep, convergent, sutural lines slightly arcuate, 
the interval roof-shaped elevated, with two rows of punctures 
on each side of the suture. Abdomen regularly punctured, 
the basal carine nearly parallel, half-as long as the segment, 
ventrals punctulate. ¢ last dorsal broadly emarginate, last 
ventral flattened, with a short, conspicuous, transverse impres- 
sion at its base. Legs darker in the specimens with darker 
elytra, second tarsal joint longer than the third. ¢ middle tibie 
with a short terminal spur. 
Varies in the strength of the punctuation, especially among 
the females. 
B. scasra, Brendel. Black, antennz, palpi and legs red, 
elytra brownish-black. Length, 1.33 mm. Plate IX., Fig. 62. 
Head punctate, large, subquadrate, not very convex, frontal 
margin arcuate, fovez equal and equidistant, the occipital ones 
in a line with the centers of the prominent, finely-facetted 
