606 



FA MIL Y XXV. — HISTBRIDiE . 



Common along the beach of Lake Michigan in company with in-' 

 terruptus; not noted elsewhere in the State. May 20-June 10. 

 The length of the sutural stria, the only character nsed by Horn in 

 separating several species, is often uncertain and variable in the 

 same species. 



1147 (3481). Hister STYGicus Lee, Best. Journ. Nat. Hist, V, 1845, 48. 

 Resembles interrupt us in almost every particular except size. Form 



more broadly oval; thorax with striae entire, parallel, equidistant from each 

 other and from the margin; disk very minutely punctulate. Propygidium 

 coarsely but very sparsely punctulate; pygidium finely and sparsely punc- 

 tate. Length 2.5 mm. 



Putnam County; rare, April 24. Taken by sifting about a 

 deserted mouse 's nest, 



1148 (3483). His tee maeginicollis Lee, Bost. Journ. Nat. Hist., V, 1845, 



58, pi. 3, fig. 11. 



Broadly oblong-oval, subconvex. Thorax with margin thickened, con- 

 vex ; outer stria wholly absent; inner one entire, close to margin; surface 

 very finely punctulate, sides more coarsely punctate. Elytra with sub- 

 humeral and three dorsal striae entire, fourth abbreviated at base some- 

 times only on apical half, fifth short, apical; sutural extending beyond 

 middle. Epipleura with one stria. Front tibia? with five rather acute 

 teeth. Notch of mesosternum very shallow. Length 3.5-4.5 mm. 



Lake, Marion and Posey counties ; scarce. March 13- August 26. 

 Those on the earlier date were taken in company with several other 

 beetles beneath honey-comb on the ground in dense woods. 



II. cognatus Lee, is said to occur in the Middle States, Illinois 

 and Wisconsin. 



1149 (3486). Hister fcedatus Lee, loc. cit., 50, pi. 2, fig. S. 



Broadly oval, subconvex. Thorax with outer stria short, but variable 

 in length ; inner stria usually abbreviated at tip, surface minutely punctu- 

 late, more coarsely on sides between the striae. Elytra with subhumeral 

 and three dorsal stria? entire, fourth slightly abbreviated at base, fifth 

 usually one-third, sutural one-half, the length of elytra. Front tibire with 

 six or more teeth. Length 4-6.5 mm. 



Marshall, Marion, Vigo and Putnam counties,; frequent, May 

 6-October 11. Occurs beneath carrion. The outer thoracic stria 

 varies from a mere arc at anterior angle to half the length of the 

 inner stria. The fifth dorsal is also variable, the basal portion 

 often being present either as a line or disconnected punctures. 



