LeConte. | 390 {Feb. 1, 
bristles, but the 8d segment is foveate as in the & of the 
species of that group. 
The species of this genus have become so numerous in our 
fauna, that the following table will be found useful for their 
recognition : 
Table of Species of CRYPTOBIUM. 
Sides of head parallel, hind angles strongly rounded................. 2. 
Head gradually narrowed behind the @yes.c clic « «stole eames ee B: 
Head short and semicircularly rounded behind the eyes............. Cc. 
2. Last joint of maxillary palpi conical, half as long as the 3d joint....A. 
Last joint of maxillary palpi small, acicular, one-third as long as the 3d 
joint, which is more thickened at the tip...... Pe iveusiatete ttoror siete ete terers D. 
Last joint of maxillary palpi very small, not conical, one-fourth as long 
as the 3d joint, which is tumid, much thickened at the tip. ........ E. 
A. §\ 3d ventral segment eee near the base and with a long and broad 
apical process, extending over the next segment, and furnished with 
long stiff black sete ; 2d segment with a short transverse fold at the 
middle ; 2 with 2d, or 2d and 3d ventral segments each with a trans- 
Verse Mold yOrslOwmeal « Netersmie schereles (ete alereisvare/oielstoiee tetecre mera aera toe ee 
S 6th ventral segment deeply and acutely emarginate, sometimes al- 
most to the base ; 9 ventral segments not impressed nor foveate...6. 
Uniform chestnut brown, feet testaceous yellow.............-----.- 3. 
Rufo-testaceous, head and abdomen, except last two segments black, or 
Cars ots, Sere esees, oS, Site cesarean ee rererHO! NAS OS Setar ane te eoneree ee 4. 
Black, last ventral segments brownish, antennze brown, legs testaceous.5. 
Q 2d ventral segment with a transverse fold at the middle...1. badium. 
© 2d ventral segment not impressed ; head less convex and more paral- 
lel than nr O50 G17 gn iery decries eee oteretateie eee asrays 2. pimerianum. 
© 2d ventral segment not impressed ; head with sides more gradually 
rounded behind ; last two abdominal segments paler.3. texanum, n.sp. 
4. © with 2d ventral segment foveate ; head and abdomen black, last two 
vo 
oo 
San HOLM G oan boon Co Roda OO Oadoe aoduoMaeans. 4. bicolor. 
Q asabove, head only black (immature)......... g, Melanocephalum. 
5. 2 2d and 3d ventral segments each with a short transverse fold at the 
ote OCN oa eaoen Ob comao oe mame cote Gna Saamerda aoe 5. floridanum. 
Q 2d ventral segment with a transverse fold, 3d foveate....6. carolinum. 
6. Black, shining, antenne dark brown, legs testaceous............+--- Wh 
Black, shining, legs and elytra bright rufous; the latter with a broad 
black stripe extending from the base to the middle....... 7. sellatum. 
7. Antenne brown ; punctures of prothorax finer........ a Sa seogomote 8. 
Prothorax strongly punctured ; antennz brown.8. californicum, n.sp. 
Prothorax strongly punctured ; antenne yellow..9. flavicorne, n. sp. 
8. Sidesotehead parallel behind the eyessac. ocr. > -ccee sees eee eee ee 
EHexd widens elnundishhiereesie nities siierretee 12. tumidum, n. sp. 
