TAPHRODERES. 
eS) 
$1. Metasternum sulcate ; metasternal crest bi-emarginate, being toothed in the middle. 
1. Taphroderes rectus, sp. n. (Tab. I. fig. 1.) 
Anoustus, nigerrimus; elytris lineis duabus flavis rectis et in medio late interruptis; apicem versus vix 
5 ’ 5 ely ’ 5 
punctulatis. 
Long. 10-144, lat. 1 millim. 
Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion). 
Antenne black, slender; club well marked, elongate; joints 2-8 moniliform, the 
eighth as long as broad, the ninth joint much longer and considerably broader than the 
eighth. Head elongate, rather narrow ; eyes placed just halfway between the front of 
the thorax and the insertion of the antenne. Thorax rather deeply channelled in front, 
finely so behind, black, very shining, finely and very distinctly punctulate. Elytra 
slender, black, with a pair of elongate, exactly parallel, yellow jines extending from the 
base to near the middle, beyond the middle they again appear as quite parallel shorter 
marks; tip quite black ; the common apical emargination or arch deep, narrow. Apical 
segments of abdomen rufescent. Abdominal sulcus broad behind, with a lateral porous 
projection on each side, the two being but little approximate, so that they render the 
exit from the groove only slightly narrower ; anterior part of sulcus narrow, extremely 
deep, its sides rather abruptly distinguished from the sides of the posterior part of the 
groove. Metasternal groove deep, in front broad and very deep, the anterior limit 
evidently tridentate. Prosternum deeply sulcate, the groove extending to the tip; 
poststernum rather broadly foveolate. 
There is but little difference between the sexes; the male has the terminal ventral 
plate hairy, and the apical arch of the elytra rather broader and less angular. 
Twelve specimens, showing very little variety, except in size. 
2. Taphroderes mexicanus, sp. n. 
Angustus, nigerrimus ; elytris lineis duabus flavis in medio interruptis, quarum partibus anterioribus haud 
omnino parallelis, sed posterius paululum divergentibus. 
Long. 63-13 millim. 
Hab. Mexico, Toxpam (Sallé), Jalapa (Hoge). 
Var. Major, robustior, pronoto medio rafescente. 
Long. 15 millim. 
Hab. Guatemata, Tamahu in Vera Paz (Champion). 
Very similar to 7. rectus, but easily distinguished, as regards the upper surface, by 
the fact that the anterior portions of the yellow lines are not parallel, so that if they 
were continued they would fall outside the posterior portions. The prothorax is not 
canaliculate behind. On the under surface the abdominal sulcus is narrower behind, 
BB 2 
