316 SUPPLEMENT. 
Extremely close to C. histrio; rather larger, more deeply coloured, and more shining. 
The head has the front yellow as far as, and extending round, the base of the antenne ;_ 
the basal joint of the antennze in the female has a blackish line on its upper surface, 
and the third and fourth joints are black on the inner half. Palpi black. The thorax 
is rich ferruginous red, covered with upright hairs, but not quite so thickly as in 
C. histrio. The elytra are of a deeper red than usual in the latter; the blue markings, 
and especially the hind spots, are more shining, owing to the coarser puncturing; in 
C. histrio the puncturing is so close as to be confused, whereas it is here so distinct 
that the separate punctures, though often confluent, are easily seen, and their inter- 
spaces are smooth. The breast and legs are black ; the abdomen blood-red, but several 
of the segments are mottled with fuscous in an indistinct manner, the dorsal apex being 
generally black. After closely studying the large number of specimens secured by 
Mr. Champion on the Volcan de Chiriqui, one sees that they present remarkably constant 
points of difference from those from Guatemala and elsewhere, which I assign to 
C. histrio. Thus the larger amount of yellow on the front of the head is the same in 
all the Chiriqui specimens, with one or two exceptions, it being therefore probable that 
the original form or species (C. histrio) is mixed in small numbers with the new species. 
7 (a). Collops blandus. 
Collops blandus, Erichs. Entomographien, p. 60°. 
Hab. Mexico 4, Presidio (Forrer). 
Distinguished from C. histrio and allied species by the red legs and antenne, and by 
the elytra being of an orange-red, with the blue markings less extended. In the seven © 
examples before me collected by Mr. Forrer the tibie are a little darker than the base 
of the legs. Three of the specimens are males. 
Collops vittatus (p. 114). 
To the Mexican localities given, add:—Northern Sonora (Morrison), Saltillo in 
Coahuila (Dr. Palmer). 
The specimens collected by Dr. Palmer and some of those from Sonora have a single, 
square, pitchy patch on the disc of the thorax; they also usually have entirely red 
antennee, and are larger than the specimens from Sallé’s collection, and probably differ 
quite as much as some of the allied species mentioned by Dr. Horn. All the species 
of this genus require a thorough revision. 
9. Collops punctatus. : 
Collops punctatus, Leconte, Proc. Acad. Phil. vi. p. 164°; Horn, Trans. Am. Ent. Soc. iii. pp. 80, 81°. 
Hab. Nortu America, United States!, Kansas?.—Muxico, Northern Sonora (Morrison). 
