14 PEOCEEDINGS OF THE NATIONAL MUSEUM vol. 71 



This species seems to be somewhat allied to the Blattella nehulosa 

 of Shelford from Borneo but lacks the nebulous markings of the teg- 

 mina; it also seems close to the Bornean Blattella nimbata Shelford, 

 but the supra-anal plate is not at all notched apically. Blattella vilis 

 Brunner and B. contigua Walker are two other roaches which the 

 present one apparently resembles in some particular or another, but 

 there are some characters present in the one here described which 

 seem to preclude its being referred to either of them. 



SORINEUCHORA, new genus 



Description. — Head with the eyes very widely separated. Organs 

 of flight fully developed, exceeding the tip of the abdomen, smooth 

 and with distinct venation; radial and ulnar veins separate and par- 

 allel except basally where they almost or quite merge; anterior field 

 broad, at the middle of the tegmen broader than the post-radial 

 area; discoidal sectors diagonal. Wings with a very small triangular 

 apical area; ulnar vein branched, the branches all directed to the 

 apex of the wing. 



Legs with all the femora unarmed beneath; arolia present. 



Abdomen without noticeadle dorsal modification; supra-anal and 

 subgenital plates transverse; styles present in male; cerci long and 

 flattened, distinctly segmented and projecting most their length 

 beyond the supra-anal plate. 



Genotype. — SorineucTiora javanica, new species. 



This genus would fall into the subfamily Oxyhaloinae in the keys 

 of Brunner and Shelford, but the absence of a conspicuous apical tri- 

 angular area in the wings makes it appear advisable to refer it to the 

 Pseudomopinae, in a section of that group in which the femora are 

 unarmed beneath. This genus is structurally allied to the Australian 

 genera Choristima Tepper and ApJilehidea Brancsik, which have been 

 hithereto referred to the subfamily Ectobiinae, but which are here 

 referred to the Pseudomopinae in the same section as the new genus 

 here described. 



SORINEUCHORA JAVANICA, new species 



Description, male and female. — Entire insect of a pellucid and very 

 light yellowish color with a tinge of greenish. Head with the eyes 

 darker, set far apart and with two small piceous spots between them; 

 antennae unicolorous, sometimes slightly darker than the general col- 

 oration of the body but generally concolorus. Pronotal disk much 

 broader than long, posteriorly broadly truncate, anteriorly broadly 

 rounded, the lateral margins broadly expanded, not or but little 

 deflexed, and transparent. Tegmina with the radial and ulnar veins 

 parallel and rather widely separated to near the base, the former send- 

 ing a dozen or more nonclavate costals to the front margin and the 



