200 (February, 
the seventh are obliterated before the apex; the eighth, as in Diplo- 
harpus, is prolonged nearly to the suture, becoming sharply impressed, 
and leaving a sharp ridge on its inner side. | 
One of my specimens has three joints of the anterior tarsi distinctly 
dilated, with broad, triangular joints, and is evidently a male. 
Ega. 
Mizorrecnus OzNOIDES, 7. Sp. 
Oblongus, vix convexus, nigro- vel rufo-castaneus, politus, capite (episto- 
mate rufo excepto) nigro, elytrorum apice indeterminate, suturd, et interdum 
margine pallidioribus ; foveis frontalibus magis impressis, extus obliquis ; 
antennis crassis, articulis 4—10 transversis ; thorace quadrato, postice parum 
angustato, angulis posticis obtusis sed distinctis; elytris ad apicem obtuse 
rotundatis, supra polrtis, levibus, vel striis nonnullis prope suturam certo 
sit apparentibus, stria 8°* apicem versus fortiter impressa, ibique margune 
punctigero lato. Long. 14 lin. 
By its thick antenne, smooth elytra, shape and colours, much 
resembling certain species of Pachyteles (sub-fam. Ozenine). 
Ega and St. Paulo, Upper Amazons. 
MizoTRECHUS PRECISUS, 2. sp. 
Oblongus, vix convexus, rufus, capite supra nigro, elytris castanets, 
latera verstis obscurioribus ; antennis minus crassis, articulis 4—10 oblongo- 
ovatis ; thorace breviori, valde transverso, lateribus rotundatis, postice magis 
quam antice angustatis, angulis posticis obtusis, sed distinctis ; elytris ad 
apicem obtuse rotundatis, striis 6 distinctis punctatis, 7”* obsoleta, 3'i4-—Gta 
ad apicem abbreviatis. Long. 2 lin. 
R. Tapajos. 
MIZOTRECHUS LEVIGATUS, 2. sp. 
Elongato-cvatus, planatus, politus, capita supra, thoracisque disco 
nigris, elytris rufo-castaneis, reliquis fulvo-testaceis ; thorace quadrato, 
transverso, postice modice angustato, antice vie rotundato, angulis posticis 
obtusis, margine basali utrinque obliquo ; elytris obtuse rotundatis, supra 
obsolete striatis, strid 8° postice flexuosd, acute insculptd ; antennis 
robustis, articulis 4—10 oblongis. Long. 2 lin. 
Received from Paris with the names “ Trechus majusculus, Chaud.,” 
and “ Acupalpus ingratus, Chaud.,’ but no such species have been, 
to my knowledge, described. 
Vera Cruz, Mexico. 
MizorrEcHUS VIXSTRIATUS, 2. sp. 
Elongato-ovatus, planatus, polilus, castaneus, capite supra nigro, 
antennis, oris partibus, pedibusque fulvis ; thorace quadrato, transverso, 
