Jan., 'lO] ENTOMOLOGICAL NEWS. 21 



base of antennae visible from above, their first joint reaching a 

 little beyond apex of head, third joint much shorter than sec- 

 ond, fourth joint longer than second and shorter than fifth. 

 Prono'tum a little more than twice broader than head, moder- 

 ately sinuate at apex, apical margin scarcely elevated, but with 

 a series of punctures immediately behind it, lateral margins re- 

 flexed in the middle only, straight, lateral angles a little promi- 

 nent. Scutellum with the apical part moderately broad, frena 

 reaching beyond the middle. Prosternum on either side be- 

 hind the apical margin with a transverse carina, the inner end 

 of which is recurved. Neither mesosternum nor metaster- 

 num elevated. Orificial keel long, straight, gradually taper- 

 ing towards the end. Hemelytra with the costal margin 

 scarcely elevated towards the base, exocorium with a double 

 row of punctures except towards the base where there is but 

 a single row, apical margin slightly rounded, apical angle acute, 

 membrane with numerous veins. Abdomen a little broader 

 than hemelytra, the apical angles of the segments with a short 

 acute spine, second ventral segment with a strong spine reach- 

 ing the fore coxae, the basal part of the spine depressed and 

 subexcavated, the apical part laminately compressed, spiracula 

 about equally distant from apical and lateral margin. Tibiae not 

 sulcated above. Tarsi three-jointed. 



Type. Phalaecus decoratus Dist. 



This genus is not closely allied to any of the other Ameri- 

 can genera having a basal spine to the venter. The fades is 

 that of a Mormidea. The genus is named in memory of 

 Disderi, whose biological "Observationes entomologicae" 

 (1805-1809) on Hemiptera and other insects have fallen into 

 undeserved oblivion. 



Disderia decorata Dist. 



Head, pronotum, scutellum and breast irregularly rather thinly punc- 

 tured. Corium more thickly and regularly punctured. Venter sm<M>tli, 

 the blackish sublateral band with strong scattered punctures. The first 

 three antennal joints and the femora and tibiae dotted with broun. 

 Connexivum yellow, the basal and apical segmenta'l margins black. 

 Male gmital segment short, broad, arcuately sinuate. 



