THE SHORT- WINGED SCAVENGER BEETLES. 



420 



*820 (2537). Latheobium collare Erichs., Gen. Spec. Staph., 1840, 599. 



Elongate, slender. Head black, antennae and thorax reddish-brown ; 

 legs paler; abdomen piceous, the apex paler. Head as long as wide, 

 coarsely and very sparsely punctate. Thorax slightly longer than wide, 

 much wider than head, sides feebly curved ; disk with a smooth median 

 line, bounded each side by an irregular row of fine punctures, and with a 

 few scattered ones each side. Elytra distinctly longer and a little wider 

 than thorax; abdomen slightly narrower than elytra, densely and finely 

 punctate. Length 4.5-5.5 mm. 



Southern half of State, frequent; less so northward. February 

 10-November 1. 



L. rubida Casey was described from Pennsylvania, Indiana and 

 Mississippi. I have not seen a specimen from the State. 



821 (2538). Lathrobium ambigtjum Lee, Trans. Amer. Ent. Soc, VIII, 



1880, 177. 



Elongate, very slender, subdepressecl. Head and abdomen piceous or 

 paler; remainder of body dull brownish-yellow. Head very sparsely punc- 

 tate ; antennae rather thick, reaching middle of elytra. Thorax oblong, sides 

 straight ; disk with a row of fine punctures each side of a smooth median 

 line, and with a few scattered ones on sides. Elytra slightly wider and 

 one-third longer than thorax, with rows of fine, close-set punctures. Ab- 

 domen narrower at base than elytra, thence feebly widening to fourth seg- 

 ment ; densely and finely punctate. Sixth ventral of male with a small 

 triangular notch at apex. Length 3.5^1.5 mm. 



Lake, Kosciusko, Marshall, Posey and Perry counties ; scarce. 

 April 19-July 24. Occurs beneath bark and rubbish in damp places. 



Group J. (Microlatiira.) 



One small, pale species represents this group in the State. 



822 (2541). Lathrobium pallidulum Lee, Trans. Amer. Ent. Soc, VIII, 



1880, 177. 



Elongate, very slender. Pale reddish-yellow, strongly shining. Head 

 as long as wide, finely and sparsely punctate, the base truncate ; antennae 

 reaching base of thorax, joints short, rather stout. Thorax slightly longer 

 than wide, with a row of fine punctures along each side of a smooth median 

 line. Elytra one-fourth shorter and slightly wider than thorax, with indis- 

 tinct rows of fine, sparse punctures. Abdomen at base as wide as elytra, 

 feebly widened toward apex, finely not densely punctate. Sixth ventral of 

 male with a small, broad triangular notch at apex. Length 3.8-4 mm. 



Marshall, Putnam and Clark counties; scarce. March 25-May 

 20. Occurs beneath stones in open woodland pastures, often in 

 company with ants. 



