252 SUPPLEMENT. 
variable in both species, but not exactly in a parallel manner. WD. stolatus is black, 
with the side of the thorax and the greater part of the margins of the elytra yellow, 
and varies with the basal half of the elytra yellow with a black streak along the suture, 
while D. scutellaris (besides being scarcely costate) has the elytra either wholly fuscous 
black, or ochraceous yellow. Some examples have the thorax entirely yellow, and in 
such the scutellum and sterna, with the coxee and femora, are also yellow. 
Drilolampadius scutellaris (p. 33). (Tab. XI. fig. 20.) 
To the localities given, add:—Panama, Bugaba, Volcan de Chiriqui (Champion). 
This is altogether a larger and more convex species than D. stolatus. The specimen 
figured is a male of the variety, with yellow thorax and scutellum, from Volcan de 
Chiriqui; of sixty to seventy examples of this species collected in the same locality 
about half are of this form, while I have not found one D. stolatus similarly coloured. 
Very few females occurred with them. These insects are usually found on the wing 
during the early morning or towards evening in humid places in the forest. 
MEGALOPHTHALMUS (p. 34). 
Megalophthalmus godmani (p. 34). 
To the localities given, add:—Panama, Volcan de Chiriqui (Champion). 
3. Megalophthalmus costatus. 
Megalophthalmus costatus, Casteln. Essai, p. 182. 
Megalophthalmus obsoletus, Blanch. Voy. d’Orb. p. 128, t. 7. fig. 7; Gorh. Trans. Ent. Soc. 1880, 
p. 97. 
fab. Panama, Bugaba, Volcan de Chiriqui (Champion).—Sourn America, Bolivia. 
The specimens taken by Mr. Champion are very variable in colour, being either with 
the elytra black, with the margin pale in the middle, or yellow with the suture and the 
apical quarter black, or the suture only slightly infuscate; they agree, however, in all 
having the thorax with the disc black and with yellow sides and front. The specimens 
found at Bugaba all agree in having the elytra blackish with the lateral margins pale, 
and also in the thorax covering the head, while those from the higher elevation of two 
to three thousand feet have shorter thoraces which leave the head exposed as far as the 
eyes, and unless this is a sexual difference I think these will prove to be two species. 
It is three years since I examined the types of VM. costatus and VW. obsoletus contained 
in Guérin-Meneville’s collection, now in the Brussels Museum, but my belief is that the 
Bugaba specimens agree with them, and if so the species has an exceedingly wide range. 
They were found by Mr. Champion sitting on leaves in forest pathways. 
