958 



FA M r LY L. SCAB AB,E L DM. 



on May 13. The longer, more finely and less roughly punctured 

 clypeus, with shallow notch, distinguishes this species from vesper- 

 Una. LeConte's texana is a smaller, paler form, with the notch 

 and surface of the clypeus nearly as in vespertina. 



8. tricolor Say, is a species of wide distribution which should 

 occur in southern Indiana; S. tristis Lee, length 8 mm., was de- 

 scribed from Lake Superior and may occur in the northern third of 

 the State. 



1808 (5681). Serica sericea 111., Mag. fur Insect., V, 1S05, 75. 



Oblong, convex, nearly parallel, male ; broader behind, female. Pur- 

 plish-brawn or piceous, strongly iridescent. Clypeus feebly emarginate, its 

 margin rather strongly refiexed ; surface densely and roughly punctate; 

 vertex finely and sparsely punctate. Thorax two-thirds wider than long, 

 sides feebly rounded ; surface finely, sparsely and shallowly punctate. Ely- 

 tra of male rather deeply, of female more shallowly, sulcate, the grooves 

 with fine, irregular punctures ; intervals convex, male, subconvex, female, 

 sparsely punctate. Length 8-9.5 mm. 



Throughout the State ; common. March 20-July 12. Occurs 

 beneath shelter of various kinds ; hibernates in pupal stage beneath 

 partly buried logs. 



1809 (5689). Serica trogiformis Uhler, Proc. Phil. Acad. Nat. Sci., VII, 



1855, 415. 



Ovate, convex, nearly smooth, feebly shining. Head, thorax and under 

 surface black or piceous ; elytra reddish-brown, the sides margined with 

 piceous; sometimes wholly piceous; antenna?, tibiae and tarsi reddish-brown. 

 Clypeus feebly emarginate, densely and coarsely punctate. Thorax convex, 

 sides slightly rounded, disk coarsely and rather densely punctured, with a 

 median impression on basal half. Elytra feebly sulcate, the grooves sparsely 

 punctured ; intervals subconvex, very sparsely punctured. Length 5-6 mm. 



Posey County ; rare. April 25. One specimen beaten from 

 wild rose bushes in woods. A southern form described from Bal- 

 timore. 



XXIII. Lachnosterna Hope. 1837. (Gr., "wool + breast.") 



A large genus of robust, pale reddish- or yellowish-brown to 

 piceous beetles, familiarly knoAvn as "May beetles" or "June 

 bugs." They have the front coxa^ transverse not prominent, but 

 contained entirely in the coxal cavities ; ventral segments six, firmly 

 united yet with sutures visible; the tarsal claws never serrate, but 

 with a single tooth beneath. All the species have long and numer- 

 ous, often very dense, hairs on the meso- and metasterna, hence the 



