StapJiyliiiidcB of the Amazon Valley. 99 



2. Acylophoi'us anyusticeps, n. sj). Niger, nitidus, 

 tarsis fiilvis, elytris sat crebre fortiterque punctatis; capite 

 ang-usto. Long. corp. 4^ lin. 



Closely allied to A. ylabricollis, rather largei', the head 

 narrower ; the antennas (the basal joints at any rate) 

 longer ; and the 6th and 7th segments of the hind body 

 entirely black. The antennae are destroyed with the ex- 

 ception of the first fonr joints ; these are longer than in 

 ylabyicollls, blackish, with the extreme base of the 1st 

 joint a little yellowish ; 3rd joint not quite so long as the 

 2nd, a little longer than the 4th. Pal]3i pitchy. Head 

 elongate and very narrow, with the usual six larger punc- 

 tures, the two forming the obliquely placed pair (near the 

 neck on each side) very close together. Thorax as in 

 ylabricollis. Scutellum broader than in ylabricollis, 

 strongly punctured. Elytra scarcely so long as the 

 thorax, their punctuation as in ylabricollis. Hind body 

 much narrowed to the extremity, black, the apex of the 

 6th seo-ment concolorous ; each segment is, at the extreme 

 base, closely and strongly punctured, the hinder part of 

 each much more sparingly. Legs pitchy black ; tarsi 

 dark reddish. 



Tapajos ; one specimen. 



3. Acylophorus acuminatus, n. sp. Niger, nitidus, 

 antennarum basi, pedibusque testaceis, elytris sat crebre 

 fortiterque punctatis. Long. corp. 3 lin. 



Much smaller and narrower than A. ylabricollis. An- 

 tenna with the basal half of the 1st joint yellowish, the 

 rest pitchy ; 2nd joint much longer than the 3rd, 4th 

 shorter than the 3rd, 5th longer than 4th ; from this to 

 the 10th each a little shorter and stouter than its prede- 

 cessor, 10th distinctly transverse ; last joint stout and 

 rounded at the extremity, a little longer than the lOtli. 

 Head suborbiculate, being comparatively both shorter and 

 broader than in ylabricollis, Avitli the usual punctures. 

 Thorax pitchy, rather broad but of the usual form. 

 Elytra scarcely so long as the thorax, black, together 

 Avith the scutellum rather closely, moderately coarsely 

 punctured. Hind body very pointed at the extremity ; 

 the segments at the base and sides of each closely and not 

 coarsely punctured. Legs yellows 



Ega ; three specimens. 



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