342 NITIDULID 2. 
Very similar to C. heterocheilus, but with the scutellum black: separated also by 
important structural differences, the prosternal process being larger, the basal portion 
of the mesosternal carina quite broad, the metasternum less produced in the middle in 
front, not in the least depressed there, and with very thick margin; the excision of the 
labrum is small, as itis in C. heterocheilus. Independent of these structural characters, 
the species may be usually recognized by the punctuation of the elytra being rather 
coarser and more irregularly distributed, the punctures being especially large on: the 
basal part of the elytra near the suture. The punctuation of the pygidium is fine and 
rather scanty. The male is broader and less convex than the female, and has the upper 
surface duller and its sculpture much effaced. 
36. Camptodes laticornis, sp. n. 
Rotundato-ovalis, sat convexus, rufo-testaceus, elytris nigricantibus ad latera plus minusve vage ferrugineis ; 
pygidio opaco, subtilissime parce punctato. 
Long. 43 millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Antenne with the club large and very broad, slightly infuscate. Head, thorax, and 
scutellum reddish-yellow, the thorax with the punctuation on the middle fine. Elytra 
moderately closely punctate. 
There is a considerable difference between the two sexes, the female being shining, 
while the male is dull and has the sculpture obliterated and the elytra not so black 
as in the female. 
This insect is (especially in the male sex) intermediate in colour between those 
species with yellow and those with black elytra, and comes equally near to C. addendus 
and to C. communis. From the former it is distinguished by the red scutellum and the 
broader club to the antenne; while from C. communis it is separated by the darker 
elytra, the rather larger club of the antenne, and by the broader and flatter lower face 
of the mesosternal carina. | 
37. Camptodes sordidus, sp. n. 
Rotundato-ovalis, sat convexus, rufo-testaceus, elytris nigricantibus, irregulariter punctatis ; pygidio parce, 
subtiliter punctato. 
Long. 4 millim. 
Hab. GuatTEMALA, Chacoj (Champion). 
We have received only two badly preserved female specimens of this obscure 
Camptodes ; but they cannot be reconciled with any other of our region, and are toa 
certain extent important because they appear to be almost equally allied to several 
species. ‘They perhaps most resemble the small varieties of C. laticornis, but the 
smaller club of the antenne distinguishes them therefrom. They are also extremely 
similar to the female of C. dimorphus, but the apices of the elytra are different. From 
