972 FAMILY L. SCAKAli.KlDJ';. 



stem; nbdoiiien llnttenod ;i( iniddlo, the fifth se}j;iueiit with a semiclrcuhii" 

 ruguloso elevatidi) in frdiil of a rather deep, smooth depression; hist sei;- 

 iiient va.mu'ly and li'ansversely impressed, l^'ciiialc wilh imliic ]irocess loiiii. 

 deeply torlvi'd, llie branches tniiicate at Up. I>en.:;th Ki i;(J iinii. (I'l. II. 

 lij?. 3S6.) 



Lake, Poi'tor, Piitiiatii and I'ei't-y counties; seai'ee. April 22- 

 Jtily 16. Ranges from New York to Illinois and southward. The 

 more slender, oblong- body, distinct siibmarginal costa and coarsely 

 and irregularly ptmctured thorax sliouhl readily distingtiisli this 

 species. 



L. spreta Horn, ol)long, (•liestnut-l)!-o\vn or fuscous, length 16.5- 

 18 nnn., is a rare species described from Maryland and Iowa. 



1S'2P, (57G7). Lachnostekna fraterna Harr., Insects Injur, to Veg., 3841, 29. 



Oblong, scarcely broader l)ehlnd. Reddish-brown, "fuscous or piceous, 

 shining. Clyiieus broadly emarginate, its surface densely punctured; front 

 more coarsely and less densely punctured. Thorax gradually narrowed 

 from base to apex, sides feebly curved, margin entire or slightly irregular; 

 surface rather coarsely and evenly punctured, a narrow median line smooth. 

 Elytral punctures finer and more dense than those of thorax, somewhat 

 rugulose on the sides; the costte usually very feeble. iNIetasternum densely 

 punctured, the hair not long or dense. Male with antenna 1 club equal to or 

 slightly longer than the funicle ; abdomen feebly flattened at middle, ventral 

 ridge as described in key; last segment deeply concave and smooth. Female 

 with pubic process long, somewhat flattened, expanded at base, the superior 

 plates wholly lacking. Length 15-lS mm. (PI. II, fig. 3Sr>.) 



Crawford County ; rare. INfay 24. Will probably be found to 

 occur throughout the southern third of State. 



1S24 (10,247). Lachnosterna nova Smith. Troc. U. S. Nat. Mus.. XI, 1888, 

 509. 



Oblong, slightly broader behind. Chestnut-brown, shining. Clypeus 

 moderately emarginate, its surface densely and coarsely punctured; front 

 less densely so. Thorax as in fidlcnm. except as mentioned in key. Ely- 

 tral punctures finer and nnich more c'losely placed than those of thorax, the 

 costae feeble but evident. Male ventral surface as in fraterna except as 

 noted in key; the claspers not more than half as large and quite diffei'ent in 

 structure. (See plate.) I^ength 14-18 mm. (I'l. II, fig. 387.) 



Vigo and Lawrence counties; rare. April 2r)-July 29. The 

 male is easily distinguished from frnlrriKi by the distinct curved 

 ventral ridge. 



L. knocliii Gyll., elongate-oval, reddish-brown to ])iceous, length 

 21.5-23.5 mm., is said to occur from IMassachusetts to Georgia. 



1825 (5774). Lachnosterma RidosA Melsh.. Proc. Phil. Acad. Nat. Sci., 

 II. 1844. 140. 

 Oblong, rather i-obust. broader behind. Dai'k reddish- or chestuut- 

 lirowu to iiic(Mius. shilling. Clypeus acutely and r;ither deei»ly emarginate. 



