Till': sii()i;i'-\vi.\(;i:i) S('a\'i:.\(;i:i; isioetlks. 347 



rowel- ;iii(l less deeply ^Tdoved Ili(ii-;i\ ;iii(l ;i more disliiictly punc- 

 lured head than in Chilalia hiJohaia. 



040 (2003). Fai^gkia uissixta Va\. (ion. Spec. StMi)li., 1840, 49. 



Stouter and a little shorter tlmu cliifjulatu. r.lack or pieeous, sliiuiii;,', 

 sparsely clothed with short flue hairs; anteuiKe and elytra often brownish: 

 leps br()wnish-yellow. Anteinue not reachiuir middle of elytra. Thorax 

 wider than liead and sli^litly widei- llian lent,', sides strongly rounded in 

 rrt)Ut, thence converuinj; to base; dislv liiiely and sparsely punctate and with 

 a deep median groove. Scutelluin witli two earinie at middle. Elytra one- 

 half wider and slightly longer than tliorax, finely and sparsely punctate; 

 abdomen ]>arallel, narrower than elytra, finely and closely punctate, r^ength 

 '2-2.5 mm. 



Tiake, Marion and Putnam counties; scarce. March 26-Decem- 

 her 7. Taken by sifting. The darker color and the two carinae of 

 scutelluni readily distinguish this from clucjulata. 



XI. Tachyusa Erichs. 1887. (Gr., ".swift.") 



Slender-l)odied forms having the antenmi; king and slendei'; 

 middle coxjb almost contiguous ; thorax narrower than elytra ; abdo- 

 men narrow, usually constricted at base and with the first three 

 dorsal segments deeply impressed at base, the impressions coarsely 

 sculptured and divided on the median lino by a fine carina which 

 joins the raised basal margin. 



KEY TO INDIANA SPECIES OF TACHYUSA. 



ff. Abdomen highly polished, almost smooth ; larger, 3-3.5 mm. 



G50. GRACILLIMA. 



an. Abdomen alutaceous and pubescent, minutely and closely punctate; 

 smaller, not over 2.S mm. 

 ?>. Thorax convex or feebly flattened; abdomen wholly dark. 



G51. AMERICANA. 



hb. Thorax with a deej) median groove; abdomen pale at base. 



652. CAVicoLiis. 



(i50 (2046). Tachyisa gracillima Lee. N. Sp. N. Amer. Col., I, 1S63, 29. 



Elongate, slender. Blackish-piceous, shining ; antennae and legs red- 

 dish-brown, tarsi yellow ; basal segments of abdomen reddish. Autenmie 

 reaching tips of el5i;ra, the second and third joints elongate, sub-equal. 

 Thorax about as wide as long, scarcely wider than head; sides feebly 

 rounded in front, almost straight on basal half; disk iinely and rather 

 densely punctate, in female often with a faint median impression. Elytra 

 one-half wider and two-thirds longer than thorax, rather coarsely, sparsely 

 and roughly punctate. Alxlomen distinctly narrower at base than middle. 

 Length 3-3.5 mm. 



Starke and Lawrence counties; scarce. June -i-June 16. Prob- 

 ably occurs sparingly along shores throughout the State. 



