TRACHELIZUS. | 27 
polished thorax, a large spot where the surface is rendered opaque by a minute dense 
strigosity. Rostrum very highly polished. Fovea of the vertex closed behind, not at 
all prolonged in front. ‘Thorax very highly polished, impunctate ; median groove very 
broad, and extending to near the front margin. Elytra with the external series of 
punctures very fine, and the series near the suture almost invisible. Head beneath 
with an elongate velvety space; the lateral series of punctures almost the same as in 
T. nigricornis. Prosternum with a band of opacity on the front; metasternum sulcate ; 
abdomen feebly sulcate at the base in the male, but unimpressed in the female. ‘Tips 
of the elytra in the male flat and thick; apical ventral segment densely punctate, and 
covered at the tip with fine short flavescent pubescence. 
One specimen from each of the three localities. Besides the characters mentioned 
above, this species is distinguished from most of its allies by the shorter more indefinite 
club of the antenne. In this respect, as well as in the male-characters, it makes a 
distinct approach to 7. fracticornis. 
14. Trachelizus occlusus, sp. n. 
Elongatus, supra planatus, rufo-niger ; elytris rufis, late nigro-vittatis ; vertice fovea profunda sat elongata, 
posterius haud aperta ; elytris fortiter seriatim punctatis, interstitiis haud convexis. 
Long. 14-15 millim. 
Hab. Mexico, Catemaco in Vera Cruz (Sallé), Las Vigas ([ége). 
Antenne very thick, piceous. The fovea on the vertex not much prolonged forwards, 
and not extending as a channel along the rostrum, the metarostrum therefore quite 
ecanaliculate above, the prorostrum deeply impressed. Thorax with a scanty fine punc- 
tuation, the median groove broad and extending very near to the front. Elytra with 
series of punctures everywhere large, the interstices rather broad but not elevated ; at the 
extreme base the series of punctures are more deeply impressed, and thus the interstices 
there are subcarinate. On the under surface the opaque space is broad and elongate, 
so as to obscure the lateral series of punctures to near the base of the pterygia; the 
series are short, and are continued little or not at all beyond the pterygia; the pro- 
sternum has some fine erect sete; near the front the surface has an opaque band ; the 
flanks are dull, but not punctate. Metasternum feebly sulcate. Abdominal segments 
in the male with two very indistinct depressions; terminal ventral plate of male at the 
apex with only a very small space more finely punctate; tips of the elytral margins . 
much dilated, flat, each bearing a distinct cavity. 
We have received only three specimens of this inseet. Though very close to 
T. turgidirostrt is, 1 think it is distinct therefrom ; the individuals are larger, and may 
be readily distinguished by the less elongate vertical fovea, and by the complete absence 
of any channel on the upper surface of the metarostrum. In the male of this species 
joints 3-8 of the antenne have their inner under surface more densely set with 
longer sete. 
EE 2 
