LEPTONIA.—THAMIARAA. 197 
and obtuse, the surface rather closely covered with a fine granular punctuation, and 
with an obscure basal impression before the scutellum. Elytra rather longer than the 
thorax, rather closely punctate. Hind body with the second and third segments bright 
yellow, usually spotted with black in the middle; fourth, fifth, and sixth segments 
black, the hind margin of the sixth and the base of the seventh yellowish, the extreme 
apex again blackish. Legs elongate, pale clear yellow. 
This species appears to be variable, perhaps according to locality; but the varieties 
appear not to be sharply separated; the individuals from Honduras are small, and have 
the thorax shorter, with the hind angles less distinct, and the basal segments of the 
hind body quite immaculate. I do not observe any sexual distinctions. 
THAMIARAEA. 
Thamiarea, C. J. Thomson, Ofv. Vet. Ak. Férh. 1858, p. 35; Mulsant et Rey, Hist. Nat. Col. Fr. 
Brév., Myrmédoniaires, p. 147. 
This genus was established for three European species; and Fauvel has recently 
added one or two others from New Guinea. It is differentiated from Homalota chiefly 
by the greater distance separating the middle cox ; and I have therefore felt justified 
in assigning to it the following three species discovered by Mr. Champion, although 
their appearance is far from similar to their Kuropean congeners. 
1. Thamiarza salvini. (Tab. V. fig. 16.) 
Variegata ; capite thoraceque seneis, parce punctatis, nitidis; elytris fuscis, humeris testaceis, crebre punctatis ; 
abdomine nigro testaceoque variegato, fere impunctato; antennis obscuris basi cum pedibus testaceis, 
articulo ultimo perelongato. 
Long. 43-5 millim. 
Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion). 
Antenne rather elongate; third joint elongate, rather longer than second, fourth 
joint rather longer than broad, tenth not so long as broad; terminal joint very 
elongate, as long as the three preceding together, acuminate. Thorax a good deal 
narrower than the elytra, broader than long, nearly straight at the sides, hind angles 
very obtuse, the surface indistinctly and very sparingly punctate. Hlytra longer than 
the thorax, of a fuscous colour, with a pale mark at the shoulder, closely and distinctly 
punctate. Hind body rather pointed behind, almost impunctate, segments second and 
third yellow, spotted with black in the middle; fourth, fifth, and sixth black, the hind 
margin of the latter and also the seventh segment yellow. Legs clear yellow. 
In the male the hind margin of the seventh dorsal plate has a minute emargination 
in the middle, and on each side of this is slightly tuberculate or thickened; on each 
side the segment is much cut out, and laterally there is an elongate obtuse tooth 
projecting quite as far back as the middle portion. 
This insect has a very great resemblance to Leptonia picta. ‘The two species appear 
