100 



TRIOHOPTERYGID.^. 



at base, very finely alutaceous ; scu- 

 tellum with punctures in basal furrow 

 absent or obsolete. L. O-H-0-84 mm. 

 2. Thorax broadest a little before base, 

 basal fovese small, but distinct, middle 

 pair placed at some distance from 

 base ; scutellum with a very minute 

 (and in F. turgidimi sometimes obso- 

 lete) puncture, placed between the 

 middle keel and side angles, but rather 

 nearer to the latter. 



A. Upper side distinctly alutaceous, with 

 fine, scattered, shallow punctures and 

 scarcely visible pubescence; thorax 

 not strongly margined ; scutellum 

 with a distinct puncture on each side 

 of middle keel, placed as above ; elytra 

 usually castaneous-brown, the head 

 and thorax darker, but colour some- 

 what variable. L. 0*86-0*94 mm. . 



B. Upper side with distinct hairs, which 

 are especially long on sides of thorax ; 

 thorax strongly margined, with punc- 

 tuation rather strong and deep ; 

 scutellum with punctures extremely 

 small or obsolete ; elytra not or 

 scoi'cely alutaceous ; bod}' broader in 

 propoition to its length than that of 

 P. Icevigatum. L. 0'1)2 mm. 



i. Prosternal keel simple, at least in front ; 

 thorax broadest a little before base. 



1. Scutellum with about six minute 

 semi-equal ridges on each side of the 

 central keel, the interspaces being 

 punctiform, without larger puncture 

 close to the side angles ; prosternal 

 keel with a short furrow between the 

 anterior coxis ..... 



Basal thoracic foveas very small ; thorax 

 and elytra with widely aud irregularly 

 placed shallow punctures ; elytra 

 usually castaneous, with somewhat 

 raised scattered hairs, fore-parts 

 darker. L. 0-86-0-92 mm. 



2. Scutellum with a distinct central keel, 

 and two punctures which are placed 



P. GRESSNEEI, Er. 



P. L.EVIGATUM, Er. 



P. TURGIDUM, Thorns. 



Sub-genus wankowiczium, 

 Flach. 



P. INTERMEDIUM, Wank. 



