562 PKOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [1885. 



baflfy tinge on the juguluin. The measurements of these two examples 

 are as follows : 



The occurrence of a species of this genus on Cozumel is remarkable^ 

 since no Harporhjjnchus has yet been detected in Yucatan, S. longiros- 

 fm, its nearest ally, having its southern limit, so far as known, in the 

 State of Vera Cruz (Jalapa, Cordova, and Mirador).* 



3. Mimus gilvus gracilis (Cabau.). 



Seven examples, agreeing with Yucatan (Merida) specimens, except 

 that the gray of the upper parts is decidedly purer or less brownish, 

 as is also the white of the lower parts. They all agree with the Yuca- 

 tan specimens in having the wings decidedly black, iu strong contrast 

 with the rather light ash gray of the upper parts, and relieved by very 

 sharply defined pure white tips to the wing-coverts (both rows), being 

 thus very readily distinguished from 31. gilvus and allied forms. (See these 

 Proceedings, Vol, 5, pp. 10-12.) Some of the Cozumel specimens have 

 the superciliary stripe very distinct, being in this respect similar to M. 

 (jilvus, from which, however, they may be distinguished not onl;y by the 

 very different coloration of the wings, but also by the greater extent of 

 white on the tail feathers, that on the lateral pair of rectrices approach- 

 ing very closely to the end of the under tail-coverts. 



4. Galeoscoptes carolinensis (Liun.). 



Three specimens. Said to be common, associated with Melatioptila 

 glabrirostrts, and supposed by the natives to be the female of that spe- 

 cies ! 



5. Melanoptila glabrirostris, Scl. 



Twelve specimens (seven in alcohol), apparently the same as the true 

 M. gJahrirostris ; but of the latter we have only one imperfect skin for 

 comparison, the bill and feet being broken and the plumage perhaps 

 not of the brightest. The five Cozumel skins are a rich, silky violet-black, 

 except the wings and tail, which are greenish black, and the abdomen, 

 which is a dead black, or almost without gloss. The violet color of the 

 back extends to the upper tail-coverts, which are only a little more blu- 



* Mr. Salviu thus refers to this curious isolation of U. (jtiltatus, aud its close rela- 

 tionship to H. lonfjiroatris : "This Earporhnnchus is allied to H. longirostris (cf. Salv. 

 & Godiu. Biol. Centr.-Am., Aves, i. ]>. ol), and at first sight might easily be mistaken 

 for it. The mandible is black to the base, and the dimensions, especially the wing, 

 are much less. Moreover, there is a wide gap in the ranges of the two birds, H. lon- 

 ffirosiris, so far as we know at present, not occurring in any locality nearer than the 

 State of Vera Cruz." (Ibis, April, 1885, p. IS?.) 



