CLERUS. 151 
dilla, San Geroénimo; Nicaraeva, Chontales (Belt); Panama, Bugaba, Volcan de 
Chiriqui (Champion). 
Chevrolat seems to have intended to change the name of this species, because muta- 
bilis had been already used by Boheman for a South-African insect. I do not think 
the term gibbifer is expressive of the two raised nodules at the base of the elytra, so 
characteristic of many Mexican species, and which are particularly prominent here. A 
large number of specimens were taken at Cerro Zunil by Champion, and many at 
Chontales by Belt. The latter vary very much in size, and also in the darkness of 
the thorax and base of the elytra, which are from pitchy brown to light red. 
10. Clerus quadrinodosus. (Tab. VIII. figg. 4, 19.) 
Clerus quadrinodosus, Chevy. loc. cit. p. 42". 
Hab. Mexico, Cordova!; GuatemaLa, Aceituno; Nicaragua, Chontales (Belt); 
Panama, Volcan de Chiriqui (Champion). 
The figure 19 is of a specimen from Cordova in Sallé’s collection; No. 4 is of a 
single specimen from the Volcan de Chiriqui, and represents what I believe is a 
variety of the same species. The specimens in Sallé’s collection are quasi-types, one of 
them being labelled by M. Chevrolat; but it would be hard to identify it from his 
description. The head and front of the thorax are black. The elytra have the humerus 
a little raised, and a more prominent tubercle near the scutellum; the white short basal 
striga (hereafter called the “ basal striga”’) is slightly raised, and runs into the tubercle, 
which is bordered with black below, or is blackish itself. ‘There is a black spot on 
the margin before the white fascia. The black band before the apex is usually united 
at the suture, forming a fascia, but is sometimes (as in the variety from Chiriqui) a 
suborbiculate spot. 
11. Clerus x-album. (Tab. VIII. fig. 22.) 
Nigro-fuscus, subopacus; elytris striga basali parva maculaque infra hane conjunctim litteram X formantibus, 
fascia mediana subhamata ad suturam paululum recurvata et interrupta, alteraque ante apicem obliqua 
recta albidis, pedibus rufo-piceis. Long. 53-63 millim. 
Hab. Guatema.a, Zapote, El Reposo (Champion). 
Var. Prothorace (margine antico excepto) rufo-piceo; elytris basi rufis, striga basali alba minuta, sed maculis 
prope scutellum inconspicuis. 
Hab. Brivise Honpvras, Rio Sarstoon (Blancaneaux); Nicaracua, Chontales (Janson) ; 
Panama, Bugaba, David (Champion). . 
When a sufficient number of this species are placed together, it appears a very 
distinct one; but I have found others which are very difficult to separate from it. The 
characters on which I rely are the rather robust form and slightly opaque surface, 
