266 BKACHELYTRA — STAPIIYLINIDAE. 



a a. Antennae pitch-brown ; elytra blackish- 

 brown. 



Head, thorax and abdomen black; legs brownish. Elytra 

 rather longer than thorax, not very closely and dee])ly 

 punctured ; abdomen rather closely, finely punctured. 

 Distinguished from the form of P. ebeninus Avith light legs 

 by its size, finer punctuation, longer pubescence, and 

 stronger palpi. L. 2 — 2| 1. Not uncommon. 



P. dehilis, Gr. 



h b. Antennae red-yellow ; elytra pitch-black, 

 with suture, apex, and sometimes side margin 

 reddish-yellow. 



Head, thorax and abdomen pitch-black ; legs red-yellow. 

 Elytra as long as thorax, not very closely, ratlier strongly 

 punctured ; abdomen not very closely, ratlier finely punc- 

 tured. L. 2 — 2| 1. Common. P. discoideus, Gr. 



JB JB, Anterior tarsi scarcely or not at all dilated 

 in either sex. 



(I a. Elytra rather longer than thorax. 



Pitch-black ; first joint of antennae, legs (including front 

 pairs of coxae), margin of ventral segments of abdomen and 

 its apex red-yellow. Punctuation of elytra moderately 

 close, rather coarse, of abdomen moderately close and fine, 

 more difi'use behind. L. 2^ — 2J 1. Moderately common. 



P. ventralis, Gr. 



6 h. Elytra distinctly shorter than thorax. 



Elongate. Black ; elytra pitch-black ; first joint of an- 

 tennae and legs red-yellow. Punctuation moderately close 

 and strong, of abdomen moderately close, fine. L. 2| — 2| 1. 

 Moderately common. P. vernalis, Gr. 



2, Penultimate joints of antennae distinctly longer 

 than broad. 



Elongate. Black ; elytra blackish-green ; legs red-brown, 

 with coxae pitch-brown. Elytra longer than thorax, closely 

 and rather strongly punctured ; abdomen closely, mode- 

 rately finely jnmctured. Anterior tarsi of male strongly 

 dilated, of female simple. L. 3J 1. Common. 



P. quisquiliarius, Gyll. 



The variety dimidiatus, Er., has the elytra (except base), 

 first joint of antennae, and front pairs of legs red. 



