•ins FAMILY XI. ST VL'HYLINIDili). 



KEY TO GENERA OF PHLCEOCHAEIN^. 



a. Thorax not carinate ; maxillary palpi filiform ; mandibles simple. 



Olisthjskus. 



aa. Tborax with four carinse; maxillary palpi, awl-shaped; mandibles 



toothed. PsEUDOPSis. 



Pseudopsis columhica Fauv., reddish-brown, 2.5-3.5 mm. in 

 length has been taken in nninbers near .Detroit. 



Subfamily VII. EUAESTHETINAE. 



Small, rather slender species having the antennse inserted before 

 the eyes at the base of the labram ; tarsi f otir-jointed ; eyes moderate 

 in size, convex, coarsely granulated, located very close to the base of 

 head; labrum usually denticulate in front; antenna', mouth parts 

 and thorax much as in the subfamily Steninas. Three genera repre- 

 sent the subfamily in the United States. Specimens of but one of 

 these have been taken in Indiana, though those of the others may 

 occur. The only paper treating of the subfamily is by : 



Gasey. — ''Contributions to the Descriptive and Systematic Cole- 

 opterology of the United States," Part I, 1884 (published 

 privately) . The genera EumstKetv.s and Edaphus are treated 

 on pp. 18-31. 



KEY TO GENERA OF EU^STHETIN^. 



a. Abdomen margined. 



&. Labrnm with a row of comb-like teeth in front; head between the 

 eyes convex ; thorax without fovea near base ; first dorsal segment 

 of abdomen without a carina. LXIX. Eu^sthetus. 



1)1). Ivabrum without teeth ; head bi-impressed between the eyes ; thorax 

 with several deep foveas along the base ; first dorsal with a median 

 carina. Edaphus. 



aa. Abdomen not margined. Stictocranius. 



LXIX. EriA';sTnii;Tns (Irav. ISOIi. (Gi-., "ca.sily porceivcd.") , 



Ton species of this genus an- listed by Tascy, Inc. ciL; nine of 

 which he dcscrib&s as new. Two of tlie ten liaxc been taken in the 

 State. 



KEY TO INDIANA SPECIES OF EU.ESTHETI'S. 



11. Elytral suture distinctly shorter than thorax; color pale reddish-browu ; 

 length 1-1.2 mm. S86. flobid.e. 



aa. Elytral suture as long as thorax; color piceous; length 1.2-1.5 mm. 



887. americanus. 

 886 (2474). Bu^sthetus florid^ Casey, Contrib. Coleop., I, 1884, 21. 



Elongate, slender. Pale reddish-brown ; finely and sparsely pubescent. 

 Head slightly \\ider than long, rather coarsely, not closely punctate. Tho- 



