4oS T?AMILY XI. S'PArnYLINlU.'K. 



839 (2575). T^derus obi.iteeatus Lee, Proc. Amer. Phil. Soc, XVI [, 1878, 

 395. 



Elongate, very slender. Head as broad as long, sligbtly wider than 

 thorax and, like the latter, very finely and si>arKely punctate. Thdrax 

 elongate-oval, sides feebly curved. Elytra distinctly longer than wide, a 

 fourth wider and slightly longer than thorax. Abdomen as wide as elytra, 

 minutely and sparsely punctate. JTale with the sixth ventral cleft nearly 

 to base. Length 4.7-5.2 mm. 



Kosciusko County ; i-nrc October 2(i. Occiii-s along the bordcr.s 

 of the laT-ii'ci- lakes and the seaeoast of the. Eastern Trnit'd Stales. 



LVII. SiJNius Stei)h. ]s:n. (Gr., "to be together.") 



Elongate, very slender species having the labrurn short, trun- 

 rate. bidentate ; prosternum carinate; l)Mse of head more or le-js 

 broadly curved and truncate ; basal .-joint of hind tarsi much elon- 

 gated, the fourth joint of all the tarsi bilobed beneath. The follow- 

 ing species have been taken or probably occur in the State: 



KEY TO INDIANA SPECIES 01' SUNIl S. 



a. Head blaclv or piceous. 



&. Elytra in part, sometimes almost wholly, black, 

 c. Abdomen wholly dark ; elytra pale at apex. 

 d. Elytra distinctly longer than thorax ; head more densely punc- 

 tured beneath. cinctis. 

 rjil. Elytra equal to or shorter than thorax ; head less densely punc- 

 tured beneath. 840. lineabis. 

 ce. Abdomen reddish-yellow, usuall.v black at tip; el.vtra subequal in 

 leagth and width to thorax, with a large darli sp<it on outer side 

 behind the middle. S41. niNOTATrs. 

 hh. Elytra wholly pale, small, e(|ual to or shorter than thorax; bndy 

 wholly pale except the head and last I wo segments. brevipemxis. 

 (((/. Head and entire body except the last two segments pale; elytra dis- 

 tinctly longer than thorax. S42. discopunctatus. 



<S'. ductus Say, 3.5-4.5 mm. in length, occitrs from New York to 

 Iowa. It is usually listed as pi-olirui Erichs.. but Say's name ha^ 

 priority. 



840 ( ). SiNius LINEARIS Ericlis., (Jen. Spec, Staph.. 1S40, 039. 



Elouiiate. parallel. Black or piceous, sub ipa(pie ; legs, antemue and 

 apical third of elytra palo yellow. Head as wide as long, slightly wider 

 than thorax, its surface, as well as that of the latter, coarsely and densely 

 punctured, the punctures elongate. Thorax oval, as wide as long, sides 

 feebly curved, base slightly narrower than apex. Elytra a little wider, 

 about as long and more coarsely punctate than thorax. Abdomen at base 

 slightly narrower than elytra, gradually and feebly widening toward apex, 

 finely and densely punctate. Length 4.4 mm. 



