CAMPTODES. 339 
I distinguish from C. communis a large number of specimens which have the punc- 
tuation of the pygidium coarse; these examples, moreover, are, on the average, consi- 
derably larger. The examples of C. cognatus show great variation, but, as in the case 
of C. communis, I am unable to find any definite characters to divide them into species. 
The males are the most variable: in the typical form this sex differs only very slightly 
from the female in sculpture, and nearly all the males of a considerable series found by 
Mr. Champion at Capetillo and Duefias are in this condition; but in other localities 
there are great variations in the sculpture of the male examples. I am able, how- 
ever, to satisfactorily distinguish all the individuals by the coarser sculpture of the 
pygidium. 
A good series of examples of C. cognatus has been obtained, though apparently it is 
much less abundant than C. communis ; if all the specimens I assign to it really belong 
to one species, it must be quite as variable as C. communis. Among the examples are 
two or three specimens of a variety in which the elytra have each a fuscous vitta, or 
large patch, broader behind. 
30. Camptodes pyxis, sp. n. 
Rotundato-ovalis, convexus, ferrugineus, antennis pedibusque testaceis ; pygidio densissime, fortiter punctato. 
Long. 5-53 millim. | 
Hab. Muxtco, Atoyac in Vera Cruz, Teapa (H. H. Smith); Brivish Honpuras, R. 
Hondo (Blancaneaux); Guatemata, Cubilguitz, San Joaquin, Chaco}, Paso Antonio 
(Champion); Panama, Bugaba, David (Champion). 
Antenne with the club clear yellow, not large. Thorax moderately closely and finely 
punctured, the punctuation on the disc quite distinct though finer than that of the 
sides. Elytra sparingly and not coarsely punctured. Pygidium coarsely and very 
closely punctured. Male with the upper surface dull. 
This is a larger insect than C. cognatus, and will be readily identified by the unusu- 
ally coarse and dense sculpture of the pygidium and the clear yellow club of the 
antenne. The prosternal process is very broad, and the mesosternal carina has a very 
broad flat lower face. It appears to be a rare species, occurring in solitary examples, 
only ten specimens having been obtained. 
31. Camptodes biformis, sp.n. (Tab. XI. figg.1,¢; 1a, 2, extremity of the 
elytra. ) - 
Ovalis, sat convexus, ferrugineus, sat crebre punctatus ; pygidio nitido, ortiter punctato. 
Long. 54 millim. 
Mas capite, prothorace elytrisque opacis, obsolete punctatis, elytrorum acibus rotundatis. 
Fem. nitida, fortius punctata, elytrorum apicibus prolongatis et sinuatis. 
Hab. Guatemana, Zapote (Champion). 
This insect is similar in appearance to the species of group 4 (C. chiriquensis &c.). 
2X* 2 
