EUSCOPAUS.—LITHOCHARIS. 549 
Hab. Guatemata, Paraiso, San Gerénimo (Champion). 
This species is not of such robust build as EZ. crassitarsis, and has the antenne and tarsi 
more slender, and the spines of the labrum longer. The male has a broad and deep 
angular excision of the last ventral segment, and a quadrate depression on the middle 
of the terminal part of the preceding segment, the hind margin being also feebly emar- 
-ginate; the three preceding segments are also very slightly impressed. Two examples. 
Our figure represents the one found at San Gerdénimo; it is rather immature. 
ORUS. 
Orus, Casey, Contributions to the descriptive and systematic Coleopterology of N. Amer. part ii, 
p. 186 (1884). 
This genus has recently been established for two Californian . species, and I now add 
one from our region. It comes very near to Scopeus, but is well distinguished by the 
fact that the neck is not so excessively slender as it is in that genus, and the whole 
build is correlatively more compact. 
1. Orus guatemalenus. (Tab. XIV. fig. 3.) 
Elongatus, angustulus, piceus, antennis pedibusque testaceis; capite dense subtilissime punctato, subopaco ; 
prothorace parcius punctato, medio area lata levigata. 
Long. 33-4 millim. 
Hab. Guatemata, Duefias, San Gerdénimo (Champion). 
Antenne rather short and stout, the third joint rather shorter than the second, the pen- 
ultimate joints distinctly transverse. Head very finely punctate and pubescent. Thorax 
longer than broad, extremely finely and not densely punctate, shining, and with a broad 
impunctate space along the middle. Elytra rather longer than the thorax, obsoletely 
punctate, subopaque. The male has the apical portion of the penultimate ventral 
segment deeply and broadly impressed along the middle, the depression being smooth 
and shining, and produced on each side so as to form a rather long lacinia ; the terminal 
segment bears a deep, narrow, parallel-sided excision. Five examples. 
LITHOCHARIS. 
Lithocharis, Boisduval et Lacordaire, Faun. Ent. Paris, p. 431 (1835); Er. Gen. et Spec. Staph. 
p. 610; Rey, Pédériens, p. 172. 
This genus will in future comprise only a small proportion of the very numerous 
forms that have been hitherto assigned to it. Rey and others have already separated 
the greater number of the European species under the generic name of Medon, and it 
appears that this is clearly a necessary course. In addition to the characters hitherto 
pointed out as distinctive of Medon, I find there exists another of great importance, 
viz. that the prosternum above the front coxe is prolonged to form a process resting on 
