46 PROCEEDINGS OF THE NATIONAl. MUSEUM vol. loi 



area between antennal sockets with a few fine white scales ; the usual 

 ridge on each side of the occiput, a median line down front ; punctures 

 small and well spaced. Antennae of the usual proportions, reddish 

 brown. Prothorax as long as wide, strongly convex, with rather 

 straight sides having three lateral teeth, two of which are inconspic- 

 uous, also one at basal and apical angles ; along middle of the anterior 

 margin, over the head, a thickening with a ridge running down at 

 right angles at each end and between these, behind the margin, a 

 depression; also a depression along the basal margin; punctation 

 rather fine and dense, under the broad, closely appressed, brown and 

 white scales, scales as broad as in squciTnosus. Elytra considerably 

 wider than prothorax, convex, a sharp humeral prominence and un- 

 usually well-developed basal callosity on each side of scutellum over 

 which a trace of costae ; area about scutellum depressed ; striate punc- 

 tures small, well spaced, with a tendency to transverse ridging; punc- 

 tures becoming finer toward apex; lateral margins serrate entire 

 length ; scales broad, closely appressed, with finer scales beneath ; scales 

 at apex mostly white. Body beneath lightly covered with a somewhat 

 less coarse white scaliness, not coarsely punctate. Hind femora bluntly 

 toothed and anterior tibiae toothed. Length 5.8 to 6.8 mm. ; width 

 3-3.5 mm. 



Type and paratypes. — Type male, Museum of Comparative Zoology 

 type No. 28118 ; one paratype, TJ.S.N.M. No. 59137 ; three paratypes 

 in the British Museum. 



Type locality. — The only label on the type is " Jacoby 2nd collection" 

 (in Bowditch collection), but apparently it belongs to the same series 

 as those in British Museum, labeled "Cayenne," one in Thomson 

 collection, one in Baly collection, and two, Laf erte. 



ReTYiarks. — This is clearly very closely related to M. curculionoides 

 Lef evre. Although the anterior margin of the thorax has not so great 

 a development, there is a pronounced thickening there. The punc- 

 tation throughout is much finer and less dense. Unlike curculionoides 

 this species has a tooth on the inner side of the anterior tibiae and 

 the anterior femora are not toothed. There is a similar pale coloring 

 of the scales at the apex of the elytra, but the scales are much wider 

 than in curculionoides and resemble the scales of M. squamosus. 



MYOCHROUS LEUCURUS, new species 



Plate 5, Figure 4 



About 7.5 mm. in length, broadly oblong, shining black with a faint 

 greenish or purplish luster beneath the broad, flatly appressed brown 

 and white scales, scales forming a white band at apex of elytra ; punc- 

 tation dense, the elytra irregularly striate-jjunctate with many trans- 

 verse wrinklings distorting the punctures ; thorax much narrower than 

 elytra, as long as broad, with a thickened anterior margin and angulate 



