OP PHILADELPHIA. 325 



Resembles the preceding, but is smaller, and is readily dis- 

 finguished by the impressed line of the thorax. 



LATRIDIUS Herbst. 



L. PUBESCENS. — Reddish-brown; thorax each side irregu- 

 larly denticulated. 



Inhabits Pennsylvania. 



Latridius pubescens Melsh. Catal. 



Body irregularly punctured, with numerous scattered hairs : 

 thorax on the lateral edge having eight or nine irregular denti- 

 eulations : elytra without any series of punctures or Impressed 

 line ; hairs of the lateral margin prominent. 



Length neraly three-twentieths of an inch. 



Very different from the species which I described under the 

 name of L. S-dentatus, which has regular series of punctures on 

 the elytra. 



[Belongs to Paratenetus, and seems to be P. punctatus Spin., 

 Mon. Cler. 2, 116; tab. 44, fig. 5.— Leg.] 



SILVANUS Latr. 



S. DENTATUS. — Thorax 6-toothed each side, and with a double 

 indentation behind. 



Latridius dentatus Melsh. Catal. 



Body reddish-brown, depressed, punctured ; punctm-es small : 

 head with a reflected edge each side, [ 266 ] extending above 

 the eye, and somewhat more prominent over the insertion of the 

 antennae : thorax with two dilated, parallel, longitudinal inden- 

 tations behind the middle, and not reaching the base ; lateral 

 edge with six rounded teeth ; the anterior and posterior ones 

 more acute : elytra with about four slightly elevated lines, sub- 

 sutural one obsolete. 



Length three-twentieths of an inch. 



[This is the type of N^Liusibiics, and was previously described 

 under the same specific name by Marsham and Fabricius ; it has 

 been carried by commerce over the entire globe. The genus is 

 still of doubtful position. — Leg.] 



1826.] 



