DIPLATYS. — PYGIDICRA>rA, 53 



Burma : Karen-ni, Keba District, 3000-3700 ft., v-xii. 



T7j2^e in the British Museum. 



In the British Museum there is a single male, one of de Bormans' 

 originals, although he only records females. 



It is quite distinct from D. gerstceclcerl from Cejdon, with which 

 de Bormans confused it. In appearance it resembles D. nigriceps, 

 but differs in the non-convex posterior margin of the penultimate 

 ventral segment and the rectilinear pronotum (which also separates 

 it from D. rufescens). In the short, broad, flat, straight forceps it 

 approaches the African forms, D. raffragi and D. tethiops, thus 

 differing also from D. jacohsoni. 



The non-emarginate penultimate ventral segment of the male 

 distinguishes it from the allied U. bormanst. 



Subfamily II. PYGIDICRANIN.E. 



This subfamily comprises all the species which were formerly 

 included in the capacious genus Pggidicrana, which is now sub- 

 divided into five, all of which are represented in the Indian fauna. 



They are large and powerful insects, some being among the 

 largest known earwigs. They all have a decided family likeness 

 and cannot be confused with the members of any other group. 



Tahle of Genera. 



1. Elytra ample ; scutellum small and narrow. 



iJ. Pronotum oval ; (penultimate ventral [p. 53. 



segment of male ample) Pygidicrana, Serv., 



2.2. Pronotum rectangular. 



3. Penultimate ventral segment of 



male ample and broad Dicrana, Burr, p. 60, 



O.3. Penultimate ventral segment of 



male narrow. [p. 61. 



4. Head as wide as pronotum .... C'RANorYGiA, Burr, 

 4.4. Head narrower than the 



pronotum Picrania, Burr, p. 63*. 



1.1. Elytra short ; scutellum broad, almost or 



quite as wide as the pronotum Pyge, Burr, p. 65. 



Genus PYGIDICRANA, Servilh. 



Pygidicrana, Serville, (31) p. 30. 



Dicranopygia, Biirm., Germ. Ent. Zeitschr. ii. p. 79 (1840). — Type, 

 Pygidicrana Y-nigrum, Serv. 



Type, Pygidicrana V-nigrum, Serv. 



Size large. Antennse with over 35 segments, first segment long 

 and thick ; second very small, cylindrical ; third decidedly shorter 

 than first; the fourth, fifth, sixth, and seventh small, globular, hardly 

 longer than second, and scarcely longer than broad ; the rest 

 gradually lengthening and passing to cylindrical. Head depressed, 



