THE EARWIGS OF CEYLON. 73 



forceps a little longer than half the abdomen, laminiform, with a strong 

 tooth at the base on the inner margin, dilated into an angle in the middle 

 with three teeth, arched at the apex ; femora oval, stout. 



Long corp, 3 1, lat, j 1, long forcip, | 1, Des Montagnes de Nura 

 Ellia. 



Forfiscelia dilaticauda, Motsch., 1863, Bull, Soc. Imp. Nat. Moscou. xxxvi,, 

 3, pp. 3 and 4. 



Labia dilaticauda, Scudd., 1876, Proc. Bost. Soc. N. H., xviii., p. 319, 



Platylahia dilaticauda, Borm. 1900, Forf. 75. 



This species is totally unknown to me. Scudder places it in the genus 

 Labia, but the presence of a distinct scutellum shows nearer affinity to 

 Pygidicrana, as well as the complicated and strongly toothed forceps. I 

 have translated Motschulksy's description word for word. He does not 

 mention the sex. 



de Bormans places it in Platylahia as a " sehr zweifelhafte Art '' and con- 

 siders it related to Platylahia Major, Dohrn. 



Dohrn makes no mention of it in his Monograph. 

 DIPLATYS, Serville. 



Body more or less depressed. Eyes very prominent. Antennse with 

 15-16 (occasionally 17) segments. Pronotum narrower than the head, nearly 

 semicircular, the angles rounded. Scutellum small. Elytra ample, more than 

 twice as long as the elytra, obliquely rounded at the apex. Wings project- 

 ing well beyond the elytra, the membraneous folds showing at the suture, 

 the exposed part being about half as long as the elytra. Abdomen cylindri- 

 cal, in the $ dilated more or less near the apex. Second and third seg- 

 ments bearing a lateral fold, often difficult to distinguish. In the $ 

 the abdomen is attenuated nearer the apex. Forceps with the branches 

 short and simple, in the $ slightly dilated at the base, contiguous or 

 subcontiguous, unarmed, the apices meeting. In the female the branches are 

 contiguous, conical, short and unarmed. 



Diplatys, Serville, 1831, Ann. Soc, Nat., xxii., 33. id,, 1839. Orth., 50, 



Borm. 1900. Forf. 8, 



Scudd,, Kirb,, Burr. 



Nannopygia, Dohrn, 1863, Stett, Ent. Zeit., xxiv., 60 (nee Kirb.") 



Dyscritina, Westw., 1881, Trans, Ent, Soc., London, p. 601, pi. xxii,, fig. 1 

 Green, 1898, Trans. Ent. Soc, London, 381. 



Cylindrogaster, Kirb. (partim). 



This remarkable genus is not likely to be confused with any other, except 

 perhaps Cylindrogaster, Stal., from which it may be distinguished by the pre- 

 sence of the lateral folds on the second and third abdominal segments. 



I have not examined the type of Dohrn's Nannopygia, but the description 

 of his N. gerstceckeri corresponds exactly with D. longisetosa, Westw., and I 

 cannot refrain from regarding them as identical. Westwood described the 

 10 



