564 Coleopterological Notices, IV. 



ward to Texas. There is considerable doubt in my mind as to the 

 real identity of the Mexican species described by Boheman as vestita 

 with the true trinotata of Say, the species are mutually so similar 

 that they are liable to be confounded unless carefully compared. 

 Plumbea Lee. seems to be identical with this species. 



2 TricUotoaris mucorea Lee— Proc. Ac. Nat. Sci., Phila., 1858, p. 79 



(Baridius). 



Much larger and broader than trinotata, the vestiture rather more 

 robust and much closer but not extremely dense, white, the squam- 

 ules long and slender, directed transversely on the pronotum and 

 oblique and interlacing along the sides of the elytral intervals, be- 

 coming large and reddish-yellow along the anterior margin of the 

 pronotum, broad and overlapping beneath and replaced by very 

 slender dark piceous squamules in a large spot involving almost 

 the entire flanks of the prothorax beneath, and in three small spots 

 at the sides and on the upper surface of the beak near the base, these 

 areas appearing as if denuded; abdomen abruptly denuded at the 

 middle of the third and fourth segments. Head glabrous ; beak 

 densely squamulose, the antennae stout, with the second funicular 

 joint longer than wide and one-half longer than the third, club 

 rather large, elongate, conoidal, extremely densely clothed with 

 fine short piceous hairs, the basal joint constituting one-third of the 

 mass. Anterior coxae separated by one-third of their own width. 

 Male with the abdomen broadly, feebly impressed in basal half, the 

 vestiture of the impression unmodified, consisting of large closely 

 recumbent scales ; fifth segment with a short broadly rounded 

 apical lobe at the middle. Length 5.0-6.0 mm. ; width 2.3-2.6 mm. 



Southern and Lower California and Arizona. Differs very widely 

 from trinotata, but perhaps identical with Boheman's vestita. It is 

 recognizable at once by its rather depressed upper surface, large 

 size and the subdenuded area at the sides of the prothorax beneath. 



Two of the specimens before me are smaller, with the vestiture 

 decidedly sparser, and with the pronotum strongly, longitudinally 

 rugose, and another much larger, with coarse and distinct pronotal 

 rugae, but with the vestiture denser than usual ; this is therefore an 

 exceptionally variable species, or else I have confounded several 

 very closely allied forms, which cannot be advantageously studied 

 with such small series of specimens. 



