THE LAiMi:LI.I(()l!N I'.llKTLES. 1)55 



1S;n2 encOO). Diplotaxis sordida Say. .Tnnni. I'liil. Acad. Nat. Sci.. V, 1825. 

 197; ibid. TI, 209. 

 (»i)i(>ii!j;, i-olmsl. convex. Kcddisli-ln'own to blacic or piccoiis. sulxipaiiiic ; 

 iipper surface clollied widi lino, siiort. sul>oroet. yollowisli liairs. tliose oii 

 lliorax dense and more erect. Clyiicns sliorl. Imindly but iiol dc("|)ly ciiiai-.ui- 

 nate; its surface, as well as that of thorax and elytra, densely, rather tinely 

 and more or less confluently punctured. Thorax with a deep impression 

 near the front angles and a distinct but more shallow one near the hind 

 ones, the middle portion more convex; sides subangulate behind the middle, 

 margin creuate. Elytra with very tine ti-ansvci-se wrinkles between the 

 punctures. Length 11-12 nnn. 



Lake Coiinty; rare, -hily 28-SepU'nil)er o. Two si)ecimeiis from 

 ])enoath drift on the beach of Fjake Michigan near .Millers and Pine. 

 Tt is known only from Michigan, Pcninsylvania and Georgia, and 

 seems to he everywhere rare. 



1808 (5710). DiPLOTAXis harperi Blanch., Cat. Col., Mus. Hist. Nat. Paris, 

 1850, 171. 

 Oblong, feebly convex. Reddish-brown or piceous, shining. Clypeus semi- 

 circular, narrowly margined, slightly reflexed, surface rather coarsely and 

 densely punctate. Thorax twice as broad as long, sides feebly rounded; 

 surface coarsely but not densely punctate. Elytra each with three indis- 

 tinct costfe, each of which bears a single somewhat irregular row of punc- 

 tures with a more distinct row on each side; the much broader intervals 

 with numerous coarse, irregular punctures. Length 8.5 9.5 mm. 



Throughout the State; common in the southern half, much h^ss 

 so in the northern counties. March 21-0ct()ber 1. Occurs in early 

 spring and late autumn l)eneath logs, leaves and stones, whore it 

 ]U'()l)al)ly hil)ernates sparingly as iiiuigo, and commonly in the juipal 

 stage. Also occiu-s at electric light and sparingly on foliage. 



1804 (5717). Du'i-OTAXis frondtcoi.a Say. Journ. Phil. .\cad. Nat. Sci., A^ 

 1825, 198; ibid. II, 299. 

 Oblong-oval, convex. Pale to dark chestnut brown, feebly shining. Cly- 

 I>eus subtruncate at ai>ex. its margin more strongly reflexed and surface 

 more finely punctate than in harperi. Thorax two-thirds wider than long, 

 sides broadly rounded, surface rather flnely and somewhat densely punc- 

 tate. Elytra each with three feeble costaj, each bearing a single regular row 

 of punctures and a row each side: the intervals with the punctures more 

 regularly placed than in hnriHri. Length 7-8 mm. 



Lawrence, Crawford and Posey counties; frecpient. May 10- 

 •luly '■\. Occurs beneath stones and logs. A shorter and more con- 

 \-ex species tlian harperi, easily distinguished by the form of the 

 (•ly[)etis. Probably occurs throughout the State. 



