OF PHILADELPHIA. 143 



series on each elytron ; breast with short cinereous, prostrate 

 hair. 



Leiifrth peven-tenths of an inch. 



Keadily distinguishable by the regular series of hair on the 

 elytra. Inhabits Pennsylvania; and I observed it on the Mi-ssouri. 

 Mr. Nuttall brought specimens from Arkansa. 



[A Lachnosttrna, previously described as M. hirticula Knoch. 

 — Lee.] 



4. M. PILOSICOLLIS. — Pale reddi.sh-brown, hairy ; thorax and 

 base of the elytra with longer hair. 



Inhabits the Ignited States. 



M. pifosi'cn/lis Knoch in Mdsh. Catal. 



Body reddish-brown, covered with dense yellowish cinereous 

 hair : head with elongated hair ; anterior edge entire, rounded, 

 reflected: punctures dilated, shallow, dense : antennae with scat- 

 tered hairs; thorax with elongated hair and diluted, shallow, 

 dense punctures : lateral edge dilated in the middle, subangu- 

 hited; striaj none; scutel punctured, [244] hairy, rounded at 

 tip : elytra pale testaceous, densely and ecjually punctured, and 

 idvered with .short, reflected, dense hair, and with longer hair at 

 base : pectus and postpectus with long liair. 



Length half an inch. 



An inhabitant of various parts of the United States. I ob- 

 served it on the Missouri and Arkansa. It may be readily dis- 

 tinguished from our other species by the remarkably hairy ap- 

 pearance of the body, and particularly of the head, thorax, base 

 of the elytra and breast. I can hardly suppose this species to 

 be the tristis of Fab., although the hairy appearance of the tho- 

 rax corresponds with the description of that insect ; but the 

 elytra are punctured and hairy, and the scutel is not white ; 

 whereas the elytra of (risfis are said to be glabrous, and the scu- 

 tel white. 



[Also a Lachnostcrna, but is M. (ristis Fabr. — Lec] 



5. M. VESPERTINA. — Chestnut-brown ; clypeus truncate, 

 acutely cmarginate each side ; elytra sulcated, grooves jumc- 

 turcd. 



Inhabits the United States. 



M. vrapirtina Melsh. Catal. 



Head truncate before, margin a little reflected, punctures 



