BELONUCHUS. 435 
The antenne are but little thickened externally, the penultimate joints less transverse 
than in B. dejectus; the palpi are black or piceous; the thorax is elongate, and the 
dorsal series of punctures in the examples before me never have more than four 
punctures, the hinder one of which is separated by a larger space from the others; 
the hind body is densely punctate, and only shows in a very obsolete manner the 
rugose punctuation that is so conspicuous on the base of each of the basal segments 
of B. dejectus; the armature is of a lurid red colour. 
There is apparently no distinction between the male and the female, except a slight 
notch on the apical ventral segment of the former. 
A small series was found on the Volcan de Chiriqui, but only single examples were 
obtained at Tolé and Chontales, and a pair at Bugaba. 
16. Belonuchus docilis. 
Depressus, minus elongatus, nigerrimus, nitidus ; antennarum basi palpisque rufis ; prothorace posterius fortiter 
angustato, seriebus discoidalibus sepius 4-punctatis ; abdomine elytrisque densius punctatis. 
Long. 7-8 millim. 
Hab. GuatEMALA, Pantaleon (Champion); Panama, Bugaba, Tolé (Champion). 
Antenne short and stout, the penultimate joints very strongly transverse, the two or 
three basal joints red. Elytra and scutellum densely and finely punctured. Hind body 
densely punctate, the two penultimate segments more densely and coarsely setose. Anal 
styles black. 
This is readily distinguished from the two preceding species, to which it is closely 
allied, by the less slender form, and by the bright colour of the base of the antenne 
and palpi, as well as by the denser setosity visible on the two segments before the last 
one. I see no male characters, except a small notch on the last ventral plate. 
17. Belonuchus hoops. 
Gracilis, depressus, nigerrimus, nitidus ; femoribus piceis; prothorace posterius fortiter angustato, seriebus 
discoidalibus 4-punctatis ; elytris abdomineque dense punctatis. 
Long. 7 millim. 
Hab. Panama, Bugaba (Champion). 
Rather more slender than B. dejectus, and differing from it and the other allies in 
that the head is narrower in proportion to the length, and the eyes are more prominent. 
The punctuation of the elytra, scutellum, and hind body is close and fine, resembling 
in these respects B. panamensis ; the medial lobe of the armature and the bases of the 
styles are pallid yellow, the apices of the latter fuscous. 
Only one pair has been found; the male differs from the female by the three basal 
joints of the antenne being shorter and thicker, and by the existence of a very small 
emargination on the last ventral plate. 
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