26 Journal New York Entomological Society, t^'o'- xxix, 



Systena plicata new species. 



Elongate-oblong, subdepressed. Dull yellow, feebly shining ; a line be- 

 hind the eye, wide margins of thorax above and beneath, narrow margins of 

 elytra their full length and epipleurse piceous-black ; apical halves of all the 

 joints of antennje piceous ; basal joint wholly piceous. Head alutaceous, 

 coarsely and sparsely punctate. Thorax subquadrate, one-third wider than 

 long, sides almost straight, parallel ; disk alutaceous, coarsely and densely 

 punctate. Elytra one-third wider at base than thorax, humeri rounded ; sides 

 parallel to apical sixth, then rounded into apex ; disk very coarsely and densely 

 punctate, its sides with a strong plica or fold extending from each humerus 

 almost to apex. Under ■ surface and legs smooth. Male with last ventral 

 slightly impressed at middle of base. Thorax of female with a very feeble 

 transverse sub-basal depression, no trace of which is evident in the male. 

 Length, 3-I-3-5 mm. 



Two specimens were swept from low herbage near Half -Moon 

 Pond, Posey County. September 22, 1918. Allied to 5". marginalis 

 Illig., but smaller, more yellowish in hue, with black markings more 

 pronounced ; sides of thorax much less curved, punctuation of upper 

 surface very much coarser and denser, and elytra with a prominent 

 submarginal fold which is wholly lacking or very faint in marginalis. 

 It is probably a member of the Austroriparian fauna, as the Lower 

 Austral Life Zone overlaps the Upper Austral in Posey County. 



Genus Tanygaster new genus. 



Oval, convex. Antennae half as long as body, ii-jointed, joints 2, 

 3 and 4 subequal, each two-thirds the length of 4-11, which are also 

 subequal in length but gradually a little stouter. Head inserted in 

 thorax to eyes, its frontal carina between the antennae prominent. 

 Thorax subquadrangular, without basal impression, its hind angles 

 rounded. Elytra but slightly wider at base than thorax, widest at 

 middle, their punctuation confused. Front coxae narrowly separated, 

 their cavities closed behind. Prosternum finely carinate between 

 the coxse. Metasternum with median portion thickened, divergent 

 behind. Ventral segments one and five exceptionally long, each one- 

 third longer than 2, 3 and 4 united, these being very short and sub- 

 equal in length. Hind femora very much inflated. Hind tibiae with 

 a very fine terminal spur on inner side. Tarsi all very short, basal 

 joint very stout, densely hairy beneath, as long as the others united, 

 third joint strongly bilobed beneath; tarsal claws divergent, feebly 

 appendiculate. 



