6 RHYNCHOPHORA. . 
Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion). 
Antenne rather slender, with elongate club, the ninth joint twice as long as the 
eighth. Head rather broad, short. Pronotum canaliculate in front, scarcely so behind. 
Elytra very narrow, each with a yellow spot just before, and another behind the 
middle; the apex and the tip of the abdomen either black or rufescent ; the apices are 
somewhat prolonged and explanate, so as to form a more distinct notch than is found 
in our other species. Abdominal sulcus narrow, in front very deep. Metasternum 
behind indistinctly channelled ; in front with a scarcely elevated transverse crescent. 
Prosternum not sulcate. First joint of hind feet very long, as long as the tibia. 
Three examples were found of this very distinct species. 
ABACTRUS, gen. nov. 
Characteres fere ut in genere Taphroderide, sed abdomine breviore, segmentis 1° et 2° simul sumtis femoribus 
posterioribus haud longioribus. 
The two species for which I propose this genus are not connected by intermediate 
forms with Taphroderes; as the form of the abdomen and its relation to the hind 
femora is of considerable importance in these predaceous Brenthide, I think the genus 
will prove a valid one. The second species is Brazilian *. 
1. Abactrus championi, sp.n. (Tab. I. fig. 5.) 
Nigerrimus, nitidus, supra impunctatus ; elytris apice leviter emarginato. 
Long. 6 millim. 
Hab. Panama, Bugaba (Champion). 
Antenne rather long, loosely articulated; seventh and eighth joints wider than the 
preceding, ninth and tenth subquadrate, eleventh not quite so long as the preceding 
two together. Rostrum broad and short, dilated towards the tip. Thorax without 
channel or punctuation, almost as long as the elytra. Elytra without punctuation ; 
with a feeble common emargination at the tip. Apical ventral segments not punctate. 
Abdomen not sulcate, the hind margin of the prominent part porous on the middle ; 
the suture between the two elongate segments distinct, the base deeply foveolate. 
Metasternum not sulcate, without crest or fossa ; mesosternum polished and impunctate 
* Abactrus sahlbergi, sp. n. 
Castaneus, nitidus, supra piceus, elytris vage testaceo-fasciatis ; abdomine basi profunde foveolato. 
Long. 7 millim. 
Antenne short and stout, none of the joints longer than broad, 4-8 each distinctly transverse, 9, 10 sub- 
quadrate, 11th as long as the preceding two together, acuminate. Thorax almost ecanaliculate. Elytra with 
two vague fascie and the tip yellowish; apical emargination scarcely present. Mesosternum coarsely punctate. 
Poststernum canaliculate ; prosternum not canaliculate. 
Hab. Braz, Santa Rita, August 1850 (Sahiberg: no. 4555 of his collections). 
