400 MR. MARTIN JACOBY ON NEW SPECIES OF [DeC. 1 3, 



the following elongate ; tliorax twice as broad as long, the sides 

 rounded with comparatively broadly reflexed naargins, the basal 

 sulcus rather deep, the surface impunctate, rufous; scutellum 

 fulvous; elytra nearly parallel, not depressed below the base, 

 the shoulders prominent, the surface finely and closely punctured, 

 the punctures distinct to the apex ; underside and legs rufous, 

 the tibife at their outer edge and the tarsi black. 



Hah. Prov. Huallaga, Rio Mixiollo, Peru ((?. A. Baer). Col- 

 lection M. Clavareau and my own. 



This species oiLactica is allied toL. dives Har. ; but differs from it 

 in the black tibite, the rufous coloration, and blue not violet elytra, 

 and from the other species of the genus in the same differences of 

 coloration and the impunctate head ; in one of the specimens the 

 head has a distinct fovea at the middle of the vertex, which is 

 wanting in the other or is scarcely indicated. 



Lactic A aegentinensts, sp. n. 



Flavous, antennse and legs black ; head and thorax impunctate ; 

 elytra dark violaceous, microscopically punctured. 



Length 5g millim. 



Of broad and nearly parallel shape, the head very broad and 

 convex, without scarcely an indication of tubercles or carina ; the 

 clypeus broad, convex, scarcely sej)arated fi-om the face ; labrum 

 and palpi black ; antennae robust, black, the second and third 

 joints short, nearly equal, fourth and following joints about one half 

 longer ; thorax twice as broad as long, narrowed anteriorly, the 

 anterior angles oblique, the basal sulcus deep as w^ell as the per- 

 pendicular lateral grooves, the surface impunctate, pale flavous ; 

 scutellum triangular, flavous ; elytra convex, without trace of a 

 basal depression, dark violaceous blue, remotely and extremely 

 minutely punctured ; underside flavous, legs black. 



Hah. Tucuman, Argentine Rep. 



This is a well distinguished species on account of the broad and 

 convex shape of the head, which nearly forms an uninterrupted 

 smooth surface. I received two specimens of this insect from 

 Mr. 0. Bruch, of the La Plata Museum. 



Agasicles, gen. nov. 



Body elongate and glabrous ; antennse filiform, the third and 

 following joints elongate, terminal ones shorter ; thorax as long as 

 broad, the sides straight, the surface without sulcus ; elytra wider 

 at the base than the thorax, obsoletely punctured, their epipleurte 

 broad ; legs stout, the posterior femora strongly incrassate, their 

 tibise mucronate, the other tibiae unarmed, the first joint of the 

 posterior tarsi as long as the following joints together, claws 

 appendiculate ; prosternum narrow ; mesosternum elongate, rather 

 broad, deeply triangularly emarginate at the base ; anterior coxal 

 cavities open ; pygidium not covered by the elytra, convex, broadly 

 rounded. 



