624 



FAMILY XXV. HISTERIDiE. 



the sides by the fourth dorsal; internal subhumeral entire, external obso- 

 lete; first dorsal long, curved at tip, second, third and fourth gradually 

 shorter, extending nearly to middle, fourth joining the sutural, which is 

 entire. Front tibiae with seven or eight teeth. Length 3-4 mm. 



Lake, Laporte and Vigo counties ; common on dead fish and tur- 

 tles along the beach of Lake Michigan. Probably occurs on sandy 

 beaches throughout the State. April 29 -June 26. 



1196 (3618). Saprinus mancus Say, loc. cit., p. 41; ibid. II, 267. 

 Resembles fraternus in form, color and size. Thorax rather densely 



punctured over its entire surface. Elytra densely, strigosely punctured, 

 the scutellar mirror ill-defined and sometimes almost obliterated; sutural 

 stria basal, extending to middle only. Front tibiae with six teeth. Length 

 2.8-4 mm. 



Occurs with the preceding along the beach of Lake Michigan, 

 but much less common. May 20-June 25. 



1197 (3620). Saprinus fitchii Mars., Mon. Hist, 1862, 494. 

 Oblong-oval, convex. Black, distinctly bronzed, shining. Thorax with 



a broad space at sides and apex coarsely punctured, finely strigose near 

 margin; base narrowly and coarsely punctured; disk smooth, polished. 

 Elytra everywhere densely and coarsely punctured except a well defined 

 scutellar mirror; first dorsal nearly entire; second and third shorter, in- 

 distinct ; fourth very short, curved at base ; sutural entirely absent. Length 

 2.8-3.2 mm. 



Lake County; rare. Five specimens were taken from beneath 

 the carcass of a dead hen near Hammond. May 27. 



1198 (3625). Saprinus patruelis Lee, Bost. Journ. Nat. Hist, V, 1845, 76, 



pi. VI, fig. 2. 



Broadly oval, robust. Surface shining, with a bluish-green or slightly 

 bronzed lustre. Thorax with a narrow band of coarse punctures along the 

 sides and apex, distant from margin except at base ; disk smooth. Elytra 

 very coarsely and sparsely punctured on apical half, the punctures extend- 

 ing along the suture two-thirds to base ; humeral oblique, fine and long, not 

 uniting with the short internal subhumeral; dorsal stride subequal, reaching 

 slightly beyond the middle, the fourth arched to join the sutural, which is 

 entire. Front tibia* with six teeth, the apical three much coarser. Length 

 3-4.2 mm. 



Take. Starke. Vigo and Posey counties; scarce. May 13-Sep- 

 tember 20. 



IX. Plegaderus Erichs. 1834. (Gr., "a blow + neck.") 



Small oblong species having a broad prosternum with a deep 

 channel on each side extending from the lobe to the tip, and also a 

 broad transverse groove which divides the median convex portion of 

 the prosternum into two unequal portions. The thorax has a deep 



