346 NITIDULIDZ. 
About twenty specimens have been obtained; they do not vary, except in the stature 
and sculpture of the males. 
46. Camptodes mexicanus, sp. n. 
Ovalis, parum convexus, rufo-testaceus, vertice prothoraceque in medio plus minusve vage infuscatis, scutello, 
elytris, pectore abdomineque nigris. 
Long. 4 millim. 
Hab. Mexico, Juquila (Sallé), Soledad in Guerrero 5500 feet (A. H. Smith). 
We have received only two females of this species; though very closely allied to 
C. signaticollis, it is undoubtedly distinct. The club of the antenna is clear yellow, 
rather small; the head is distinctly, the thorax sparingly and extremely finely, 
punctate ; the punctures on the elytra are distant and moderately coarse. The apices 
of the elytra are obtusely prolonged and dehiscent as in the female of C. signaticollis ; 
but the last ventral segment has a peculiar plication, forming an elevation at the apex 
in the middle. 
Group 3. 
Margin of the prothorax and elytra armed at the lower edge with short, sharp spines ; 
lobes of the labrum simply rounded. (Species 47.) 
Although we have only one species of this group in our region, I have a second from 
Brazil, even more remarkable, in my collection. 
47. Camptodes armatus, sp. n. 
Oblongo-ovalis, sat convexus, ferrugineus, crebre punctatus; antennarum clava nigra, apice vix emarginato; 
prothorace margine laterali subtus spinis brevissimis, retrorsum spectantibus, armato. 
Long. 6 millim. 
Mas prothorace elytrisque subopacis. 
Fem. supra nitida. 
Hab. GuatemMaua, Chacoj, San Isidro (Champion). 
Head rather coarsely punctured, shining. Thorax and elytra moderately coarsely 
and closely punctured. Pygidium coarsely punctured. Elytra moderately long, apices 
each a little rounded, similar in the two sexes. 
Of this very distinct species we have received only one pair. It is similar in size, 
form, and colour to C. chiriquensis, though the points of difference are so important as 
to separate the two very widely. The peculiar spines on the sides of the thorax extend 
the whole length of the margin, but are very short in front, and cannot be seen from 
above, but towards the base they are longer, and project so as to be easily detected. 
‘The sexual difference in sculpture is very considerable. 
