OF rniLADELPHIA. 291 



The name undithfus is prc-occupied by a species described by 

 Plerbst. The short hair with which the body is furnished, is 

 deciduous, particularly that of the thorax. 



[Belongs to Trmjodcrma. — Lec] 



BYKRHUS Latr. 



B. ALTERNATUS. — Black ish-brassy ; elytra with alternate 

 darker lines. 



Head and thorax minutely punctured, black-brassy; with 

 short, prostrate hair; auteinuii black; the thorax with a slender, 

 impuuctured, dorsal line : elytra black, very slightly tinged with 

 brassy j striae very narrow, well impressed, and with very small 

 punctures; interstitial lines flat, altcrnatel}' more obviously 

 polished ; very minute liairs : beneath blackish, with small very 

 regular punctures : feet blaekish-piceous. 



Length less than one-fifth of an inch. 



I am indebted to Mr, Charles Pickering, of Salem, Massachu- 

 setts, for this species. I have never before met with it. 



[Identical with Cytilus varius of Europe. — Lec] 



ELMLS Latr. 



1. E. CINCTUS. — Blacki-sh ; elytra with a large rufous arcuated 

 line and spot at tip. [187] 



Parnits ciiu-tiis Melsh. Catal. 



Head black ; antennae and palpi yellowish, dusky on the ter- 

 minal joint; thorax black, anteiior and posterior margins pale 

 rufous : a transverse slight elevation each side of the middle 

 with a corresponding indentation before : elytra convex, black, 

 with a large arcuated pale rufous line, extending nearly straight 

 from the humerus obliquely to near the sutural middle ; thence 

 it curves outwards and backwards towards the margin ; towards 

 the tip, a dilated longitudinal pale rufous line: feet elongated 

 tibiae and base of the thigh, pale rufous. 



Length rather more than one-tenth of an inch. 



The antennae are very obviously eleven-jointed, and the termi- 

 nal joints are slightly enlarged. 



[Belongs to Ancyronyx Er. ; previously described as Macrony. 

 chus ran'egatus Germ. — Lec] 

 1825.] 



