54 PROCEEDINGS OF THE NATIONAl. MUSEUM vol. loi 



below. Elytra nearly two and a half times as long as protliorax, 

 moderately convex, with a slight transverse depression below the basal 

 callosities ; punctation not very coarse, well spaced, becoming finer in 

 apical half and not entirely concealed by the rather long pubescence; 

 as in the case of the protliorax, beneath the longer hairs a shorter 

 thicker set of more closely appressed scales. Body beneath not very 

 densely pubescent, with broader scales beneath the thorax and on the 

 sides and finer, longer scales on the abdomen and legs; densely and 

 moderately coarsely punctate. Legs deep reddish brown; anterior 

 tibiae without the usual conspicuous tooth in the inner side, but a small 

 tooth almost hidden in the long hairy vestiture and situated somewhat 

 farther from the apex than usual and seen with difficulty ; posterior 

 femora toothed ; claw joints unusually long. Length 5.8 to 6.4 mm. ; 

 width 2.8 to 3 mm. 



Type. — In Berlin Museum ? 



Type locality. — Peru. 



Other locality. — Chile. 



Remarks. — Although nomenclatorially the type of the genus, M. 

 immmmdus is morphologically one of the least typical species, being 

 peculiar in having long hairlike scales in addition to the shorter 

 broader scales beneath, and in having only a very inconspicuous tooth 

 on the inside of the anterior tibiae which Erichson overlooked. It 

 also has unusually long claw joints and long antennae. 



MYOCHROUS EXPLANATUS Baly 



Plate 5, Figure 3 

 Myochrous explanatus Baly, Trans. Ent. Soc. London, ser. 3, pt. 4, p. 335, 1865. 



From 8 to 9.5 mm. in length, oblong, deep reddish brown, shining 

 beneath the short closely appressed yellowish scales ; thorax not at all 

 convex but flattened out toward the margin, with the margin varying 

 from being almost arcuate, with three faint undulations, to having 

 three well-developed lateral teeth; neither thorax nor elytra very 

 densely or coarsely punctate. 



Head covered with scales to the antennal sockets, beneath the scales 

 surface rugosely and coarsely punctate, a median line down front 

 ending in a broad shallow depression; the usual occipital ridge on 

 either side. Antennae reddish brown, not extending much beyond 

 the humeri, the outer joints not greatly enlarged. Protliorax con- 

 siderably wider than long, not convex but flattened out on the sides 

 with a depressed line along the base and a shallow depression on either 

 side near the base ; the margin varying from being almost arcuate or 

 slightly undulate to distinctly 3-tootlied, with a small tooth at apical 

 and basal angles ; surface beneath the fine, closely appressed yellow 

 scales shining, finely and not densely punctate, the punctures becoming 



