TRACHELIZUS. 25 
the pterygia; anterior to this the series is continued forwards as very closely-placed 
fine punctures, the intervals between which when examined in half-profile are seen to 
form minute angular prominences, so that there is a fine saw on each side of the under 
surface of the rostrum (Tab. I. fig. 23). The apices of the elytra form a definite common 
emargination which in outline is feebly bisinuate ; each tip has a minute portion cut 
away from the inner face of its most prolonged part, so as to form a very shallow 
impression there. 
10. Trachelizus frontalis, sp. n. 
Rufo-niger, politus, thoracis lateribus elytrisque setis erectis, his punctis seriatis minus subtilibus sat remotis ; 
vertice profunde angulariter foveato, fovea antice in canalicula ducta. 
Long. 8 millim. 
Hab. Nicaracua, Chontales (Janson) ; Panama, Volcan de Chiriqui (Champion). 
We have received only two females of this species. Though in general appearance 
it closely resembles 7’. sternalis, it is distinguished by such good characters that I have 
no doubt it will be recognized with ease. These characters are the setose surface, the 
absence of the sternal foves, and the presence of a saw-like arrangement of the intervals 
of the lateral punctures of the prorostrum. The impression on the vertex is open 
behind, and is prolonged in front to form a channel; between the points of insertion of 
the antennze there is no channel. The very broad channel on the thorax extends very 
nearly to the front margin; the sete are quite visible from above, though the disc is 
very polished and free from setw. The serial punctuation on the elytra is quite distinct, 
and a seta is seen to spring from each puncture. The margins of the elytral apices are 
quite simple. The sculpture of the sides of the rostrum is continued forwards beyond 
the pterygia as a beautifully perfect series of punctures, after the fashion of 7’ serratus. 
11. Trachelizus sternalis, sp. n. 
Rufo-niger, politus, elytris subtilissime (vix perspicue) seriatim punctatis ; vertice profunde angulariter im- 
presso, impressione posterius haud occlusa, anterius haud in canalicula prolongata; prothorace sulco 
anterius abbreviato ; prosterno utrinque mox ante coxam profunde foveolato. 
Long. 6-10 millim. 
Hab. Mexico, Cerro de Plumas (Hége), Atoyac in Vera Cruz (H. H. Sinith); Guate- 
MALA, Zapote, San Gerénimo ( Champion); Nicaragua, Chontales (Janson) ; Panama, 
Volcan de Chiriqui, Caldera (Champion). 
Antenne red, thick; joints 3-8 transverse, ninth and tenth quadrate, eleventh acumi- 
nate. Rostrum moderately depressed between the points of insertion of the antenne. 
Thorax with a broad channel, which is abbreviated at some distance from the front; 
very smooth and shining, without trace of transverse constriction. Elytra rather short. 
Head beneath without velvety area; the metarostrum carinate along the middle, the 
carina between the eyes dilated ina cruciform manner ; in front of the transverse branch 
BIOL, CHNTR.-AMER., Coleopt., Vol. IV. Pt 6, May 1899. EE 
