836 FAMILY XL. LAMPYRIDJE. 



1595 (- -). TELEPHORUS SIMPLIUNGUIS sp. nov. 



Elongate-oblong, rather robnst. Piceous black; thorax yellow, with a 

 rather broad median stripe black, this wider near apex and base; front of 

 head yellow, antenna? piceous. Thorax suborbicular, one-half wider than 

 long, more convex on basal half ; sides broadly rounded into base and apex ; 

 margins narrow, not reflexed ; median impressed line deep, entire ; disk with 

 a feeble impression each side near middle. Elytra finely rugose, sparsely 

 and finely pubescent. Second joint of antennae nearly half the length of 

 third, the latter equal to fourth. Length 6 mm. 



Described from a single specimen taken near Pine, Lake County. 

 May 26. Beaten from the foliage of sand cherry, Primus pumila 

 L. Belongs in the group with mnrcjuullus Lee., in which the tarsal 

 claws are simple and elytra finely scabrous. The shape of thorax, 

 which is that of ~bilineatus, and the lack of pale margins of elytra 

 distinguish it from marginellus. 



XXI. POLEMICS Lee. 1851. (Gr., "war-like.") 



This genus is intermediate between Silis and TelepJwrus and is 

 separated mainly by the characters given in the table. The an- 

 tenna? are compressed, more or less serrate, with second joint less 

 than one-third the length of third, which is equal to fourth. Tarsal 

 claws simple, the outer one of hind pair with a blunt tooth at base. 



1596 (4966). POLEMIUS LATICORNIS Say, Journ. Phil. Acad. Nat. Sci., V, 



1825, 168; ibid. II, 278. 



Elongate-oblong, rather robust. Black or piceous black, finely hirsute; 

 side margins of thorax and hunieri (sometimes basal third) of elytra dull 

 orange yellow. Antenna? long and strongly serrate (male) ; shorter and 

 less serrate (female). Thorax as broad as long, front angles obtusely 

 rounded, side margins slightly notched a little before the middle and nar- 

 rower in front of notch ; disk impressed each side near the margin. Elytra 

 densely and finely scabrous, obscurely three-costate. Length 6.5-8 mm. 



Vigo County ; rare. June 17. Occurs on the greater ragweed, 

 Ambrosia trifida L.. in low. moist grounds. Also in Webster col- 

 lection from Indiana and Illinois. 



1597 (4967). POLEMIUS UNDULATUS Lee., Proc. Phil. Acad. Nat. Sci., V, 



1851, 341. 



Oblong, rather robust. Piceous ; thorax rosaceous and yellow, with a 

 dark dorsal stripe; base of femora, margins of abdomen and elytra, and 

 sutural line of latter dull yellow. Thorax as wide as elytra, front angles 

 obtusely rounded, hind ones rectangular ; side margins wide, notched at mid- 

 dle, bisinuate. Elytra finely and densely scabrous. Length 6-7 mm. 



Steuben and Marshall counties; rare. August 11-August 15. 

 Say described a beetle from Posey County, Indiana, under the name 

 Cantharis invalida (LeConte Ed. Say's works. II, 636), which is 



