xin,D,3 Bergroth: Philippi7ie Heteroptera, I 99 



The subbasal plica of the membrane in Ptychoderrhis is often 

 even more conspicuous than in Lethaeus Dallas and in Cistalia 

 Stal, with which it also has the strongly curved second vein of 

 the membrane, and the number and arrangement of the 

 glandular spots of the fourth ventral segment in common. In 

 fact the genus must be placed near Cistalia, if we follow Stal's 

 system. 



Ptychoderrhis indica Dall. 



Luzon, Laguna, Los Baiios and Mount Maquiling. 



Of this species only the unique type specimen was previously 

 known, but it does not seem to be rare in the Philippines. The 

 single, not quite normally colored, specimen of it known to me in 

 1913 was redescribed by me as a new species under the name 

 Antillocoris banksii. The great superficial resemblance between 

 these two genera is a rather meager excuse for this mistake. 



Ptychoderrhis bipunctata sp. nov. 



Black, humeral angles and basal margin of pronotum narrowly 

 pallescent, corium and clavus whitish, subpellucid, punctured 

 with fuscous, the former with a small round spot behind middle 

 at apex of radial vein, the apical margin and a short posterior 

 vitta at claval suture fuscous, membrane hyaline, iridescent, 

 vi^ith the exterior half of the transversely triangular impressed 

 basal area fuscous, male genital segment pale testaceous; 

 antennse with the two first joints testaceous, third fuscous, 

 fourth whitish testaceous with the extreme base fuscous; 

 rostrum and legs pale testaceous, all coxse and fore femora (ex- 

 cluding apex) picescent. Impunctate, basal half of pronotum 

 and scutellum irregularly and extremely finely punctulate, corium 

 finely and moderately thickly punctate. The first three antennal 

 joints subequal in length, fourth longer than any of the others. 

 Scutellum distinctly longer than broad. 



Length, male, 2.5 millimeters. 



Luzon, Benguet, Baguio. 



About the size and form of Ptychoderrhis antennata Scott; 

 quite different from the other three species in the coloring of 

 the elytra. 



Lemnius bakeri sp. nov. 



Glabrous, black; corium with a triangular ochraceous patch 

 behind the middle, membrane whitish hyaline; antennae, ros- 

 trum, legs, and male genital segment dark testaceous, coxae and 

 trochanters black, femora piceous. Head as broad as apex of 

 pronotum, thickly and finely punctate, the eyes not quite touch- 



