TFIK WATKH SCUVENOEK HEETLKS. 265 



iiiicly ;iiiil iiidisl iiicl l.v |niiic(;i1c, imirc (■o.-irsfly Jil tln^ sides. lOlytr-M iimrc 

 .n.irsrly hut less (.-lusely iniiictnic tli.iii llionix. I'ciiiui-;! of ,m11 flic Ic^^s 

 ilciiscly punc'tulate and pubesconl. Lciiiitli - ll.r> luin. 



;\I;ii'i(iit .-iiid Piitnaiii coimlics; scai'cp. April Ki-Octobcr 17. 

 I-><)tli this and the proeediiiii' wo-o siftod tVoiii dchfis tak'on fnuii the 

 margins of hillsido sprinti's. 



Tribe IV. SPH.T:RIDI1M. 



To 1his ti'iix' hoh^iiii" a iiuiuhcr of small, convex., oval (ir licmi- 

 si)hcrieal l)eetlcs. which live in damp places in decaying vegeta- 

 tion or in the dung of herbivorous mammals. The color is usually 

 Mack oi- piceous, with the elytra freciuently spotted or margined 

 with pale yellow and, in most genera, possessing ten rows of punc- 

 tures or stria?; legs not fitted for swimming; first joint of middle 

 and hind tarsi elongate. Four genera are represented in Indiana. 



KEY TO INDIANA GENERA OF SPH.^^RIDIINI. 



a. Sides of elytra not extended below the lower surface of body. 



I). Elytra not inflexed : epipleura horizontal, distinct; prosterniiiu cari- 



nate at middle. 



c. Larger species, 5 or more mm.; scutellum elonji;ate; antenna' eight- 



.iointed ; last dorsal segment visible. XVII. Sph.eridium. 



cc. Smaller S])ecies, o mm. or less; scutellum equilateral; antennie 



nine-jointed; last dorsal segment covered. XVIII. Cercyon. 



hi). Elytra infiexed. clasping the sides of body, without distinct ei)i- 



pleura ; prosternum elevated at middle, forming a large pentagonal 



area ; thorax not margined ; length 1.5-2 mm. 



XIX. Cryptopleuri'm. 

 (Id. Elytra extended below the lower surface of body, the punctuation con- 

 fused, without trace of strire; first ventral segment not carinate; 

 length 3-3.5 mm. XX. Phcenonotum. 



XVIT. Sph.eridium Fab. 1755. (Gr.. "ball or sphere -f little.") 

 517 (1602). Sph^btdiitm scarab^oides Linn., Faun. Suec, 1761, 145. 



Oval or suI>globose, convex. Above black, shining; elytra with a red- 

 dish sub-basal spot and the apical fourth yellowish ; beneath piceous, the 

 femora spotted with paler. Thorax and elytra finely and evenly punctured, 

 the latter without striaj. Length 5.5-().5 mm. 



A recently introduced European species, taken from beneatii 

 rubbish on the beach of Lake Michigan at Pine, and Whiting, Lake 

 County; at Lake ^Maxinkuckee. l\Tarshall County, and on the shore 

 of the Ohio River at NeV' Albany; scarce. April 16-October 23. 



XVTTT. Cercyon Leach. LSI 7. (A mythological name.) 



f^mall black or piceous beetles with mo.re or less yellow on the 

 tips of elytra. They have the middle cox^e narrowly separated; 



