THE ANT-LOVING BEETLES. 



309 



aa. Tarsi with a single claw ; maxillary palpi very long. 



h. Last joint of maxillary palpi club-shaped, very long, third small, 

 globular. Pselaphus. 

 hh. Last joint of maxillary palpi long, hatchet-shaped, third triangular. 



IX. Tychus. 



Chennium monilicorne Lec, reddish-brown, thorax as long as 

 wide, pubescence short, dense, appressed, length 2.8 mm.,, has been 

 taken near Cincinnati and probably occurs in the hilly regions of 

 southern Indiana, (Fig. 146, a.) 



ILL Ceophyllus Lec. 1849. (Gr., "I hide + a leal") 



Antennal tubercles wider than long, contiguous; pubescence 

 short, fine, appressed ; front femora each with three strong spines 

 near the base. One species is known. 



Fig. 147. a, Ceophyllus monilis;. b, Tmesiphorus costalis; c, Hamotus batrisioides. All highly magnified. 



(After Brendel and Wickham.) 



*591 (1866) . Ceophyllus monilis Lec, Bost. Journ. Nat. Hist., VI, 1849, 73. 



Elongate-oval. Reddish-brown, not punctate. Head as long and three- 

 fourths as wide as thorax. Antennae stout, half the length of body, male 

 with second joint two-thirds the length of first, third and fourth equal, 

 wider than second ; fifth to tenth globose, the eighth largest ; eleventh wider 

 and bluntly pointed ; female with joints subequal and slightly increasing in 

 size toward tips. Thorax bell-shaped, as long as wide, sides evenly curved; 

 disk with a fine impressed line at base and a fovea each side. Elytra one- 

 half wider at base than thorax, front half of disk fiat with a feebly im- 

 pressed groove. Abdomen a little narrower than elytra. Length 3.3 mm. 

 (Fig. 147, a.) 



Vigo, Franklin, Crawford and Posey counties; scarce. Febru- 

 ary 28-September 10. Occurs beneath bark of rotten stumps. 



