410 TROGOSITIDA. 
there is a short reflexed apical portion on which the margin is placed, so that this is 
concealed until the segment is bent away from the elytra. 
T. reversa is similar in many respects to 7. smithi, and were it not for the well- 
marked protuberance of the prosternal process would be better placed near to it. 
30. Temnochila championi, sp. n. (Tab. XIII. fig. 10.) 
Supra wnea, nitida, antennis nigris, articulo basali, pedibus corporeque subtus cyanescentibus; capite fortiter 
punctato ; prothorace parce punctato, margine basali medio crassiusculo ; elytris apicibus parce punctatis ; 
abdomine medio fere levigato. 
Long. 13-20 millim. 
Mas, area submentali medio fasciculo minuto instructa; abdomine ad latera parce subtiliter punctato. 
Fem., abdomine fere levigato. 
Hab. Nicaragua, Chontales (Janson); Costa Rica (Van Patten); Panama, Bugaba, 
Volcan de Chiriqui, Caldera (Champion). 
The thorax is rather elongate and parallel-sided, with lateral marginal sinuation 
well-marked and the front angles prominent; there is no trace of any depression on 
the disc, but there is a more or less feeble flattening of the surface at the base in the 
middle. The elytra are polished and shining, but there are always distinct punctures 
at the apices. In the female the margin of the last ventral plate is distinct, and even 
in the male it is but little concealed, the thickening of the hind edge being extremely 
slight. 
Mr. Champion procured a very fine series of this species in the State of Panama, 
but from Chontales we have received only two specimens, and from Costa Rica only 
one example; the species varies but little except in size. 
A single female from the Volcan de Chiriqui has a very distinct punctuation on the 
ventral segments, and may perhaps prove to belong to an undescribed species. The 
unique exponent from Costa Rica has a highly polished surface, and its colour is 
slightly different. 
31. Temnochila costaricensis, sp. n. 
Fem. supra enea, nitida, antennis pedibusque nigris, corpore subtus wneo-subviridescente ; capite fortiter 
punctato ; prothorace nitido, parcius subtiliusque punctato, ad basin in medio depresso, margine basali 
subtili; elytris impunctatis, politis; abdomine parcius irregulariter punctato. 
Long. 19 millim. 
Hab. Costa Rica, Volcan de Irazu (Rogers). 
We have received only two examples of this insect, both of the female sex. Although 
at first sight they are excessively similar to 7. championi, I entertain but little doubt of 
their being distinct ; the basal margin of the thorax shows no trace of the incrassation 
that is seen in the middle of its course in 7. championi, and there is no punctuation at 
the apices of the elytra; the colour of the under surface is scarcely blue, differing 
