HOMOTAGES. — PTEEYGIDA. 157 



branches are remote, elongate, nearly straight, gently sinuate, not 

 contiguous. 



Length of body .... 10-5-14 mm. 12-13 mm. 

 ,, forceps . . 4-8 ,, 3-3-5 „ 



SiKKiM : Darjiling, vi, {Paris Mus., colls. Burr <S,- Gadeau) ; 

 Nepal : Chitlong {Ind. Mm.) ; United Pkovinces : Kumaun, 

 Naiui Tal, 6400 ft., x. {InJ. Mus.) ; Tekasseeim : Thagata, iv. 

 {Genoa Mus.). 



Type in the Genoa Museum. 



In the type of coloration this species resembles AUodahlia 

 coriacea and A. ahrimanes, but differs in tbe generic characters. 



The species is easy to recognize as it does not closely resemble 

 any other species ; its general dull black colour with reddisli 

 elytra and forceps are quite distinctive, apart frooi the peculiar 

 form of the pygidium and the armature of the forceps. 



Variation. 



This species varies considerably in size, and also in the form and 

 armature of the forceps. The description as given above refers to 

 the typical well-developed form ; but in the author's collection 

 there is a small male (length of body 10 mm., of forceps 4 mm.) 

 in which the forceps are quite horizontal when viewed laterally, 

 gently converging, with one small tooth near the base, and a 

 nearly obsolete tooth about the middle : this is from Nepal ; in 

 another male, from the same locality, the posterior tooth is strong 

 but there is only one basal tooth and that is weak ; this appears 

 to be the case in the majority of specimens : the largest specimen 

 seen is also from Nepal (see dimensions as given above), and in 

 this there are two teeth in the basal half on each branch of the 

 forceps. This discrepancy does not warrant a separate varietal 

 name, nor justify the use of the term dimorphism ; it is probably 

 due to accidental conditions affecting the growth of the individual. 



Genus PTERYGIDA, VerJueff. 



Pteiygida, Verhcef, (02i) p. 197. 

 Anechura, Scudder, (76) p. 289 (pars). 



Type, Forficula jar/or i, Dohru. 



Body broad and depressed. Antennae with third segment long 

 and cylindrical, fourth the same and nearly as long as third, the 

 rest elongate, cylindrical. Head depressed, truncate posteriorly. 

 Pronotum slightly longer than wide, anterior margin truncate, 

 posterior margin rounded. Elytra ample, broad, costal margin 

 not keeled, dilated and well rounded at the shoulders. Wings 

 long ; coloured. Legs rather long and slender. Abdomen strongly 

 depressed and dilated about the middle, oval and narrowed towards 

 the apex. Last dorsal segment of the male transverse, short. 



