384 INSECTA. 



their not projecting, or but very little and simply on the sides, 

 beyond the labrum. Their body is oval or elliptical, and the 

 anterior extremity of the head slightly extended into an ob- 

 tuse or truncated point. The tarsi consist of five(l) distinct 

 joints, entire, and at most, slightly pilose underneath; the pe- 

 nultimate is somewhat shorter than the preceding one. The 

 antennae terminate in a perfoliaceous triarticulated club ; the 

 elytra completely cover the abdomen, and the palpi are some- 

 what thicker at the extremity. Some very small species in- 

 habit the interior of houses, and are frequently found on 

 windows. 



We will unite them all in a single genus, that of 



Dacne. 



Dacne, Lat. — Engis, Fab. Dej. — Erotylus, Oliv. 



Their antennae terminate abruptly in a very large orbicular or 

 ovoid and compressed club, composed of crowded joints, of which 

 the middle one at least is much wider than it is longj the third is 

 longer than the second and fourth. 



The middle of the posterior margin of the thorax is dilated be- 

 hind or lobate, and the superior extremity of the mentum terminated 

 in a truncated or bidentated point(2). In 



Cryptophagus, Herbst. Schoenh. — Dermestes, Lin. Fab. — Ips, Oliv. 

 Lat. — t^ntherophagus, Knoch, 



The antennae are moniliform, their second joint as large as the 

 preceding or larger, and terminating in a less abrupt and narrower 

 club than in Dacne, and with intervals between its segments(3). 



We now come to certain tribes in which the prsesternum is 

 frequently dilated anteriorly in the manner of a chin-cloth, 



(1) Certain Cytophagi, or at least their males, according to some authors are 

 heteromerous. 



(2) See Fab., Syst. Eleut. 



(3) See Schcenh., Synon. Insect., I, ii, p. 96. 



The antennse of the Antherophagi are proportionally thicker, composed of more 

 transversal joints, and terminated almost gradually in a club; from the second to 

 the eighth they are nearly equal. The Cryptophagus silaceus, GylL, has a projec- 

 tion in the form of a tooth or horn on eacli side of the inferior surface of the 

 head. The ^^riphylla of Megerl. and Uej. only differ from the Crytophagi in the 

 number of their tai'sial joints. 



