or PHILADELPHIA. 143 



series on each elytron ; breast with short cinereous, prostrate 

 hair. 



Length seven-tenths of an inch. 



Readily distinguishable by the regular series of hair on the 

 elytra. Inhabits Pennsylvania^ and I observed it on the Missouri. 

 Mr. Nuttall brought specimens from Arkansa. 



[A Lachnosterna, previously described as 31. hirticula Knoch. 

 —Lee] 



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

 base of the elytra with longer hair. 



Inhabits the United States, 



J/, pilosicollis Knoch in Melsh. Catal. 



Body reddish-brown, covered with dense yellowish cinereous 

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

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

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

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

 lated ; striae none ', scutel punctured, [ 244 ] hairy, rounded at 

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

 covered with short, reflected, dense hair, and with longer hair at 

 base : pectus and postpectus with long hair. 



Length half an inch. 



An inhabitant of various parts of the LTnited 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 tristis are said to be glabrous, and the scu- 

 tel white. 



[Also a Lachnosterna, but is M. tristis Fabr. — Lec] 



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

 acutely emarginate each side ; elytra sulcated, grooves punc- 

 tured. 



Inhabits the United States. 

 M. vespertina Melsh. Catal. 



Head truncate before, margin a little reflected, punctures 

 1824.] 



