THE SHORT- WINGED SCAVENGER BEETLES. 



397 



thorax, finely and sparsely punctate, the punctures nowhere in regular 

 rows. . Abdomen slightly narrower at base than elytra, thence eeebly widen- 

 ing to fifth segment, finely and sparsely punctate, minutely pubescent. Length 

 7-7.5 mm. 



Porter County; rare. May 21. Larger and more robust than 

 emmesus and very distinct in color of abdomen and punctuation of 

 head. 



768 (2275). Xantholinus gularis Lee, Trans. Amer. Ent. Soc, VIII, 



1880, 173. 



Elongate, slender. Head, thorax and abdomen black or piceous ; an- 

 tennas, legs and elytra dull red. Thorax elongate-oblong, feebly narrowed 

 from apex to base; dorsal rows with nine to ten punctures and about the 

 same number in the rows on sides. Elytra one-third longer than thorax, 

 sparsely, finely and irregularly punctured. Abdomen finely and sparsely 

 punctured above, more coarsely beneath, the tip reddish-brown. Length 

 6.5-7.5 mm. 



Lake and Kosciusko counties; rare. July 23-July 24. Occurs 

 beneath bark, especially that of pine. A member of the boreal 

 fauna. 



769 (2276). Xantholinus obscurus Erichs., Gen. Spec. Staph., 1840, 330. 



Elongate, slender. Head, thorax and abdomen piceous, shining; legs 

 and tip of abdomen dull yellow; antennae and elytra fuscous-brown, the 

 former one-half longer than head, the second and third joints equal. Head 

 oblong, as wide and about as long as thorax, alutaceous, coarsely and evenly 

 punctate on sides and base. Thorax oblong, feebly narrowed from apex to 

 base ; dorsal rows of ten to twelve punctures, the sides with about fourteen, 

 irregularly placed. Elytra a little wider and longer than thorax, each with 

 about four irregular rows of rather coarse punctures. Abdomen finely and 

 sparsely punctate. Length 6-6.5 mm. 



Lake, Putnam, Vigo and Franklin counties; frequent in Lake, 

 rare in the others. March 26-October 17. Occurs beneath bark 

 and rubbish in sandy localities. 



770 (2279). Xantholinls hamatus Say, Trans. Amer. Phil. Soc. IV, 1834, 



453 ; ibid. II, 568. 



Elongate, slender. Head black, shining: abdomen brownish-piceous ; 

 thorax piceous or reddish-brown ; antennae, elytra and legs pale reddish-yel- 

 low. Head shorter, more convex and much more sparsely and finely punc- 

 tate than in obseunis. Thorax one-third longer than wide, not narrowed 

 behind, sides parallel ; dorsal rows of ten to twelve fine punctures, a short 

 row of four or five and the sides with eight to ten, irregularly placed, with 

 others near the apical angles. Elytra one-third longer and slightly wider 

 than thorax, each with four or five rows of fine, sparse punctures. Abdo- 

 men finely, sparsely punctured, the hind margins of the segments paler. 

 Length 5.5-6 mm. 



