ICHNEA. 179 
most resembles Calopteron obliquum, but has a strong general likeness to many species. 
Only three specimens have yet occurred. : 
2. Ichnea mexicana, (Tab. IX. figg. 186, 192, 21 var.) 
Ichnea mexicana, Thoms. Mus. Scient. p. 651; Chev. Mémoire, 1876, p. 36 (9 )?. 
Hab. Mexico 12, Cordova (Sallé), Juquila (Boucard, coll. Sallé); Guatemata, San 
Geronimo, Capetillo (Champion); Nicaracva, Chontales (Belt). | 
Var. Mexico, Cordova (Sallé); Guatema.a, Cerro Zunil ; Panama, Volcan de Chiriqui, 
Bugaba (Champion). 
M. Chevrolat evidently considers the wider individuals to be the males; on the 
contrary, though the apical segments are not specially modified in either sex, I believe 
the narrower and more parallel ones are the males. The club (‘la massue”) of the 
antenne is not correctly described by him? as consisting of four joints. The third to 
eighth joints are shortened and strongly transverse, and form an apparently single mass, 
their hairiness making it difficult to count them separately. The three terminal joints 
are large and compressed. It is evident that this adds to the illusive resemblance to 
some species of Calopteron, such as C. ichnoides. ‘The variety has the elytra either 
entirely yellow, or yellow more or less clouded at the apex. 
Fig. 18 is of a specimen from San Gerénimo (male); fig. 19 is afemale from Cordova; 
and fig. 21 is a male of the variety from Cerro Zunil. 
3. Ichnea panamensis. (Tab. X. fig. 2.) 
Nigra, superne ochracea; prothorace lineis duabus discoidalibus basi conjunctis, haud bene discretis, nigris ; 
elytris apicem versus paullo ampliatis, punctato-striatis, seriebus punctorum pone medium confusis, ad 
basin lineolis subsuturalibus et scutello nigrescentibus. Long. 8-10 millim. 
Hab. Panama, Bugaba (Champion). 
Head ochre-yellow; antenne, mandibles, and tips of the palpi black, an indistinct 
line behind the eyes, and continuous with the thoracic line, blackish. Thorax very 
slightly narrower in front than behind, more depressed than in Jf. meaicana, sides 
sinuous, a conspicuous depression on each side behind the middle, and a smaller one 
in front of the scutellum on the middle of the base: besides the two ill-defined lines 
on the disk, there are two lines on the underside, on each side below the margin, with 
a corresponding spot on the head. The elytra are of a rich ochraceous yellow, with 
very frequently a short dark streak from the scutellum, diverging a little from the 
suture; the series of punctures are often continued at the sides beyond the middle. 
The legs are black, with the exception that the front pair and sometimes the middle 
and hinder ones have their bases faintly yellow on the inner sides. ‘The specimens 
which I accord to this species appear to be all females; but with them males have been 
found which, from their quite dissimilar puncturing, as well as from other differences 
in the mode of coloration, I have considered to be a remarkable variety of [. mexicana, 
2A 2 
