Geodephagous Culeoj)tei'a of Japan. 321 
Long. 2^^^ lin. 
Nagasaki ; three examples. 
Similar in form to P. rujicollis, but elytra more convex. 
The head is subopake ; labrum and palpi piceous; antennae 
pitchy-black, with the extreme bases of the joints pallid 
testaceous. The thorax forms a broader or more truncated 
peduncle at the base than in P. rujicollis. The elytra are 
of a deep shining black, the deflexed margins (epipleura) 
only tawny-brown, except in some examples this colour 
extends to the upper edges ; the stri» are finely impressed, 
much more deeply so towards the apex, and are strongly 
punctured; the 3rd interstice does not show the two punc- 
tures Avhich are so conspicuous (especially the one near the 
base) in P. rujicollis. 
P. suhcordicollis, n. sp. 
Nigro-picea, antennis (scapo fusco-piceo excepto), palpis 
et ])edibus flavo-testaceis ; thorace minus transverso, sub- 
cordato sed angulis lateralibus distinctis, pedunculo latiori, 
truncate ; elytris subtilissime punctatis, margine exteriori 
a scutello usque ad suturte apicem anguste flavo-testaceo, 
supra fortiter punctato-striatis, striis apice minus impressis. 
Long. 2^ lin. 
Nagasaki ; one example. 
The thorax is less transverse, or narrower in proportion 
to the length, than in other Asiatic species ; it is, however, 
of the same pentagonal form, except that the base forms a 
somewhat broader peduncle, obtusely truncated ; its sur- 
face is convex and very glossy, pitchy-black, a little clearer 
on its margins. The head also is rather narrower and the 
eyes less prominent ; and the antennae have conspicuously 
thicker joints. The elytra have very strongly punctured 
strias, but they become much fainter towards the apex. 
To the four names {Rhomhodera, Pentagonica, Didetus, 
Elliotia) which this Avell-marked genus had received, Mr. 
Wollaston has recently added a fifth, Xenothorax, in his 
"Coleoptera Hesperidum," founded on a species, X. hexa- 
gonus, from the Cape Verde Islands. This species is dis- 
tinct from all others (9 in number) Avhich I have been able 
to examine, but it offers not the slightest ground for generic 
separation. The basal peduncle of the thorax is much 
broader and more truncated than mP. rujicollis, hwt every 
species differs a little in the form of this part. The name 
Rhomhodera (Reiche, 1842), is prior to Pentagonica 
( Schmidt-Goebel, 1846), but it Avas pre-occupied by Bur- 
meister for a genus of Orthoptera in 1839. 
