of new Fi^-Insects. 23 



maintained in the many specimens which I have 

 examined, otherwise perfect, coupled with ah abnormal 

 development of the fore and hind femora, which closely 

 approximate laterally ; their antennae, with a central 

 conical joint deeply embedded within the next in succes- 

 sion, are also very peculiar ; while the four terminal 

 retractile joints of these ten-jointed organs in the females 

 readily serve to separate this sex from any known genus. 



Kradibia,* n. g. 



Mas apterus. Caput parvum, obcordatum. Oeidi 

 plus minusve conglomerate Mandibulce minimse, tri- 

 gone, recta linea transverse valde porrectas, apice 

 bidentatse, dentibus obtusis. Antenna 6-articulatae, 

 glabrae ; articulo basali parvo, obtrigono, 2do magno, 

 subovato, latere interno medio dilatato, apice truncato ; 

 3tio brevi, curvato, dimidio basali constricto; 4to minimo, 

 conico, apice intra 5ti basin profunde inserto ; 5to elon- 

 gato, latitudine duplo longiore, basi apiceque truncato, 

 lateribus subparallelis ; extimo (6to) simili sed breviore, 

 apice conico. Palpi obsoleti. Thorax capite dimidio 

 latior ; pronoto magno, antice rotundato, angulis posticis 

 valde productis, acuminatis ; mesonoto semicirculari 

 metanoto longiore, postice late truncato. Pedes antici 

 breves ; coxis parvis, subquadratis angulis rotundatis ; 

 femoribus maximis, latis ; tibiis brevibus, robustis, apice 

 dilatatis, angulis in spinas acutas, incurvas, valde pro- 

 ductis ; tarsis parvis, crassis, biarticulatis, articulo 2do 

 longiore ; unguibus magnis, basi dilatatis, dente brevi 

 utrinque instructis. Pedes intermedin desunt ; appendi- 

 cibus duabus minimis biarticulatis, articulis subrotundis, 

 basali majore, ad mesosternum postice affixis, licet ob- 

 tectis necnon ob exiguitatem vix detegendis, tantum in- 

 dicati. (Tab. III., fig. 47). Pedes postici coxis parvis 

 oblongis ; femoribus ut in anticis latis, parum breviori- 

 bus ; tibiis longioribus, basi tenuioribus, apice sensim 

 latioribus, truncatis, angulis utrinque bimucronatis, mar- 

 gine externo setis paucis tenuibus, dentibusque obtusis 

 4 prope apicem, instructis ; tarsis 5-articulatis, articulis 

 1 — 4 brevibus, apicali duplo longiore ; unguibus medio- 

 cribus, pulvillis dilatatis. Abdomen basi inflatum, sub- 

 sphaericum, segmentis apicalibus tenuibus, elongatis, 

 saepe subter truncum retro deflexis. 



* Kfccfrn, ficus sylvestris. 



