42 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loi 



Rema/rks. — Tliis species is characterized by the faintly vittate elytra 

 and the unusually broad and heavy aedeagus. The scales are about 

 as long as broad. 



MYOCHROUS DARLINGTONI, new species 



Plate 8, Figure 3 



From 6 to 7 mm. in length, elongate oblong, piceous beneath the 

 broad brown-and-white scales, with deep reddish-brown antennae and 

 legs, the scales forming a brown-and-white pattern on the thorax and 

 elytra, with the sides of the thorax and median line pale, a pale, in- 

 curving band from the humerus down the elytron and a pale trans- 

 verse apical band, neither reaching the suture ; thorax 3-toothed, ap- 

 proximately as long as wide and more convex anteriorly. 



Head densely covered by wide scales even down to the base of the 

 jaws, the usual ridges on either side of occiput, surface beneath the 

 scales densely and deeply but not rugosely or confluently punctate. 

 Antennae reddish brown, of the usual proportions. Prothorax as 

 long as wide, strongly convex in anterior half and smoothly rounded 

 over the middle, with a thickened anterior margin over occiput 

 having a faint median notch, and a depression behind, also depressed 

 along the basal margin; sides with three tiny teeth and a tooth at 

 basal and apical angles; punctation deep but not very dense and 

 moderately coarse, completely hidden by the broad brown and white 

 scales; these scales forming a pattern in which the median line and 

 sides are white, some of the scales deeper chocolate brown. Elytra 

 with a similar sort of pattern, consisting of a long incurving pale band 

 from humerus down toward suture and another forming a transverse 

 pale band not reaching the suture near the apex ; sides more or less 

 pale and the brown areas interspersed with deeper brown scales; 

 striate punctation below entirely concealed by scales, but consisting 

 of not coarse or contingent punctures becoming much finer toward 

 the apex. Body beneath densely covered by broad white scales leav- 

 ing little of the dark shining surface beneath visible. Hind femora 

 not distinctly toothed, anterior tibiae with the usual inner tooth. 

 Length 6 to 7 mm. ; width 2.5 to 3 mm. 



Type and paratypes. — Type male and three paratypes, Museum of 

 Comparative Zoology type No. 28123, collected by P. J. Darlington in 

 1929 ; one paratype, U.S.N.M. No. 59019. 



Type locality — Aracataca, Magdalena Province, Colombia, collected 

 by P. J. Darlington, in 1929. 



Other locality. — Colombia : New Granada. 



Remarks. — Recognized by the narrow shape and unusual color pat- 

 tern formed by the broad brown and white scales. The thickened 

 anterior margin of prothorax is similar to that found in M. holivianus 

 and the curculionoides group. The shape of the aedeagus is rather 

 unusual. 



