230 SUPPLEMENT. 
divided. The pear-like form, somewhat shining surface, with the transverse lines 
forming the cells fine and close, and not clathrate, are the best characters I can give 
at present for its recognition. 
Calopteron palpale (p. 10). 
Taken by Mr. Champion in great profusion at Bugaba and on the Volcan de Chiriqui; 
the great bulk of the specimens being of the var. 4; but a variety occurs which one 
might be tempted to name, in which the usual dark fascia and apical patch are faintly 
shadowed out, and the legs are more fuscous. ‘The specimens of this variety are nearly 
all males of middle size; but I found one female possessing the same characters, and 
some with imperceptible gradations of tint to the quite yellow form. 
9 (a). Calopteron planulum. 
Ochreo-flavum ; femoribus apice, tibiis tarsisque fuscescentibus ; antennis nigris, articulis duobus basalibus infra 
flavescentibus. Long. 9-10 millim. 
Hab. Panama, Bugaba (Champion). 
Elytra moderately expanded behind, and in the male dehiscent at the apex, with 
four coste ; cells not very close; transverse coste with a few short yellow sete. The 
head is often slightly infuscate between the eyes. The thorax longer than wide, bell- 
shaped, with acute and rather prominent hind angles. There is sometimes a faint 
indication of a dark fascia on the outer margin. In size and colour a Jittle like 
C. unicolor, Kirsch, according to a specimen so named for me by M. Bourgeois; but 
less parallel, with a much smaller thorax and darker antenne and legs. Seven 
examples taken. 
Calopteron flavipes (p. 11). 
To the localities given, add:—GuvatTeMALA, Mirandilla, San Isidro, Pantaleon 
(Champion); Panama, Bugaba (Champion). 
Calopteron juvenile (p. 12). 
To the localities given, add :—Panama, Volcan de Chiriqui, Bugaba (Champion). 
Taken in considerable numbers by Mr. Champion. 
13 (a). Calopteron costatulum. 
Calopteron costatulum, Kirsch, Berl. Zeit. 1865, p. 58*; Bourg. Ann. Soc. Ent. Fr. 1879, p.17”. 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion), Matachin (Thieme).— 
Cotomsia 2, Bogota 4. 
Three specimens seem referable to this species; it is very near to C. posticum, but 
