436 FAMILY XI. STAl'llYUXID.E. 



well ;is tli.Mt of thorax, densely and strigosely punctate. Thorax Hirer- 

 fifths as wide as head, median smooth line narrow. Elytra one-third wider 

 but not longer than thorax. Abdomen at base as wide as elytra. Fifth 

 ventral of male with two small tubereles on hind margin. Length 3.7-4 mm. 



Knsciusko County; rare. June 25. Sifted from vegetable 

 debris at edge of tamarack swamp. A member of the boreal fauna. 



8. frix/ix Melsh.. 5.5-7 mm. in length, has been taken near Cin- 

 cinnati and ranges from Pennsylvania to Arizona. It doubtless oc- 

 curs in southern Indiana. 



LIV. MEGASTILICUS Casey. 1889. (Gr., ''large + style.") 



This genus was erected by Casey upon a very stout form with 

 a small orbicular head, having the body, especially the margins. 

 thickly clothed with short, stiff bristles, 



s:;.-> (9G50). MECJASTIIJCTS FORMICARIVS Casey, Entom. Amer., V, 188!). 183. 

 Dark reddish-brown, opaque; head and abdomen piceous. Head nearly 

 circular, not punctured but coarsely alutaceons; neck exceedingly small: 

 antenna* reaching base of thorax, stout, the joints closely united. Thorax 

 slightly longer than wide, widest one-third from apex, the sides thence 

 rapidly converging to apex, nearly straight to base; disk coarsely alu- 

 taceous. the median line smoother. Elytra three-fourths wider and one- 

 third longer than thorax, finely, sparsely and roughly punctate. Abdomen 

 short and broad, strongly margined, less than one-half longer than elytra. 

 finely and densely punctate. Length 5 mm. 



Putnam and Spencer counties; rare. April 9-June 13. Occurs 

 in the large cone-shaped nests of ants, especially those of Formica 



LV. LEPTOGENIUS Casey. 1005. 



Minute reddish-brown species having the eyes very small; la- 

 brum with four teeth; antennas extremely short, not longer than 

 head; neck about one-fifth as wide as head; thorax obliquely nar- 

 rowed in front. Two species occur in the Eastern United States, 

 one of which has been taken in Indiana. 



liter,!). LEPTOGEMIS ISKEVICORNI.S Casey. Trans. Acad. Sci. St. Louis. 

 XV, l!>0r>. L'47. 



Slender, subparallel. feebly convex. I'ale reddish-brown, closely, coarsely 

 and rugosely punctate; elytra somewhat darker. Head longer than wide. 

 its sides parallel. Thorax three-fourths the width of head, about as long 

 as wide, base twice as wide as apex, median line feebly carinate Elytra 

 together as Inn- as wide, one-third wider and a fourth longer than thorax. 

 Abdomen as wide as elytra. Length 1.7 mm. 



