PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 45 



following: M. riifus, M. longirostris, M. ocellatus, M. cinereus^ M. hoidirei, 

 M. palmeri, aud M. curvirostris. This arrangemeut, I am aware, removes 

 M. palmeri much further from R. lecontei thau Mr. Brewster (ef. Bull. 

 Nutt. Orn. Olub, vi, Apr. 1881, p. 67) has suggested should be its posi- 

 tion, but after a very careful comparison with all the species, made in 

 coTiuection with Mr. Brewster's remarks upon the subject, 1 am con- 

 vinced that the two birds have in fact nothing in common beyond a 

 general superficial resemblance in coloration. In fact, these two si)e- 

 cies, wbich exhibit the nearest approach in the two genera, may be 

 as readily distinguished by the characters given above as may H. redi- 

 vivus and R. rnfus, although the difference is of course far greater be- 

 tween the two latter. With but a single specimen of R. lecontei for 

 comparison, I cannot verify a single one of the characters adduced by 

 Mr. Brewster as distinguishing this species from R. redirlvus, although 

 I am obliged to indorse his view of their specific distinctness, since 

 very positive specific characters distinguish them, the most important 

 of which, it appears to me, are the following : 



1. H. REDivivus. Tail slightly darker and somewhat browner than 

 the back ; lower parts chiefly ochraceous-buff", the crissum more fulvous; 

 auriculars dusky, with distinct whitish shaft-streaks; no distinct dusky 

 "bridle'' or paler malar stripe. Wing 3.90-4.30, tail 4.90-5.80, culmen 

 (to exposed base) 1.35-1.75; width of maxilla at nostrils .25-.30, the 

 lafeml outlines gradually hut decidedly divergent totcard the hase; tarsus 

 1.45-l.GO, middle toe .95-1.12. 



2. H. LECONTEI. Tail very decidedly darker but scarcely browner 

 than the back; lower parts (especially abdomen) chiefly dull white, the 

 crissum ochraceous, in marked contrast ; auriculars light brownish gray, 

 like occiput, without distinct paler streaks; throat bordered on each 

 side by a distinct dusky "bridle," and a distinct malar stripe of whitish, 

 imrrowly barred with dusky. Wing 3.70-3.90, tail 4.57-5.20, culmen 

 (from exposed base) 1.25-1.35; width o/ maxilla at nostrils .20-21, the 

 lateral outlines parallel from near the tip hacJc nearly or quite to nostrils; 

 tarsus 1.25, middle toe .S5. 



It will thus be seen that aside from positive characters afforded by 

 the plumage, the proportions of the two species are radically distinct. 

 While the wing and tail average slightly less in R. lecontei, the tarsus 

 aud middle toe are disproportionately shorter. In fact, both the feet 

 and bill are altogether slenderer, and much more like those of iT^. crissa- 

 lis, to which there is also a nuich nearer resemblance in the dusky 

 "bridle" and whitish malar stripe. 



The ^' Rarporhynchus^'' graysoni, from the island of Socorro, I propose 

 to make the typQ of a new geiuis, as follows: 



Genus MIMODES, Eidgway. 



Ch. — Somewhat like Mimus, but with the bill decidedly stouter 

 the wing much more rounded, and the colors much more uniform. 



