88 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



Maxillary i>ali)i rather lonj;, 4-Jointod; labial i)ali>i v«^ry slunt, 2- 

 jointt'd. 



IVIaiidibles truncate at tii)s and .'{dentate, thti outer two iMuiical, 

 ecjual; the inner smaller, blunt. 



Thorax snbovate; prothorax narrowed before «and impressed at sides, 

 seanely as lon<; as the mesonotnni, the anterior margin ridjied; meso- 

 notuni broadjT than lonj?, with 2 distinct furrows eonverj^inj; pos- 

 teriorly; meta thorax short, rounded behind, scarcely sculptured or 

 indistinctly areolated. 



Front wiufjs with a moderate sized lanc^eolate stijiina, two basal 

 cells, and an angnlated stignial vein; sometimes one or two discoidal 

 cells are more or less visible, but usually they are wanting or subob- 

 solete. 



Abdomen subovate or oblong oval, petiolate, the second and third 

 segments nearly equal. 



Legs moderate; the hind pair the longest, femora obclavate, the 

 tibiae subclavate, tlu^ tarsi usually long and slender. 



I am strongly of the oi)inion that this genus, known only in the male 

 sex, will yet prove to be the opposite sex of Gonatopns. It is reared 

 from TifphJoci/h(V and other jassids. 



The four species in our fauna may be distinguished by the aid of the 

 following table: 



TABLE OF SPECIES. 



Hind logs very long, the tibiiu very long. 

 Hind tiiisi longer than tlioir tibia". 

 Antenna- very long, tlio llagolliir joints nearly .'') times as long as thick. 



Marginal eell open at tip L. i.oNtuTAKsis, s\t. nov. 



Marginal cell completely ciosed L. tkxancs, sp. nov. 



Hind Icigg not especially long, the tiliia^ not long. 

 Antenna' not longer than the thorax, the ilagellar Joints ueAcr more than 3 times 

 as long as thick. 



Pedicel and scape eqnal in length L. NASi'Trs Ashni. 



Pedicel twice a.s long as th(! scape L. tvi'Hlocvb.e, sj). nov. 



Labeo longitarsis sp. nov. 



3 . Length 2.G""". Black, shiniig; head finely closely punctate, 

 the occiput deeply emargin ate; eyes large, rounded, pubescent. Man- 

 dildes and i)alpi rufous. Antenna* lO-jointed, long, setaceous, pubes- 

 cent; first and last tlagellar joints about of an equal length, longer 

 than the scape, the remaining slightly shorter, four times as long as 

 thick. Prothorax scarcely visible from above; mesonotum with two 

 distinct furrows, converging posteriorly; scutellum with a transverse 

 impressed line at base; jnetathorax longer than high, roundedly trun- 

 cate behind, finely closely punctate, and with a median carina. Wings 

 hyaline, pubescent, the venation distinct, brown; the stigma long 



