56 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loi 



as above except in the middle of the abdomen, first abdominal segment 

 densely and finely punctate. Hind femora without distinct toothing, 

 anterior tibiae with the usual inner tooth. Length 6.8 to 8.2 mm.; 

 width 2.6 to 3.2 mm. 



Type. — In British Museum of Natural History ; a cotype examined. 



Tyfe locality. — Mexico. 



Other localities. — Mexico : Oaxaca, Playa Vicente, Salle collection. 



Remarks. — In its elongate shape, reddish brown coloration under 

 the white scales, and convex thorax, M. sallei somewhat resembles M. 

 magnum Schaeffer. It has white instead of yellow scales, is more 

 slender, and has tinier teeth on the prothorax. The white scales make 

 it one of the palest of the genus. 



MYOCHROUS BRUNNEUS. new species 



Plate 7, Figure 5 



About 5.5 mm. in length, elongate oblong, shining, deep reddish 

 brown with short, closely appressed yellowish scales, thorax wider 

 than long, convex, 3-dentate, and with coarse but not dense punctures ; 

 elytra with well-spaced striate punctation. 



Head covered with short, closely appressed yellowish scales down 

 to antennal sockets with the usual occipital ridge on each side and a 

 median line down the front, lower front with a few short finer scales. 

 Antennae deep reddish brown, of the usual proportions. Prothorax 

 wider than long with three well-developed lateral teeth and the usual 

 smaller apical and basal toothing; moderately convex, with a basal 

 depression most marked over the scutellum ; surface lustrous, coppery, 

 with round, deep punctures not closely placed and becoming larger 

 toward base. Elytra similarly lustrous beneath the short, yellowish 

 scales, the striate punctures not closely set, becoming finer at apex; 

 very little evidence of a basal callosity, and only a faint transverse 

 depression. Body beneath shining under the short, sparse, fine scales, 

 first abdominal segment with sparse coarse punctures. Hind femora 

 bluntly toothed, anterior tibiae with the usual inner tooth. Length 

 5.3 mm.; width 2.4 mm. 



Type. — A male. Museum of Comparative Zoology type No. 28124. 



Type locality. — Amazon Valley, near Santarem, Brazil. 



RcTnarks. — This is one of the reddish-brown species, distinguished 

 by its sparse punctation, strongly convex thorax, and short, thickset 

 aedeagus. 



MYOCHROUS LONGIPES, new species 



Plate 1, Figure 2 



About 6 mm. in length, oblong, deep reddish brown to shining 

 bronze, densely covered by short, pale brown or grayish, closely ap- 

 pressed scales; thorax wider than long, rounded in the middle, 3- 



