Mr. P. L, Sclatcr on some new species uf Ant-Thrushes. 59 



subulato, manJUnila superiore niyricanto, inferiori' jntllide 

 plvmbea : pedihns plumbeis. 



Lon^. tota 4'0, ala^ 2-0, caudic 1-7. 



This is an exceedingly pretty species of Foroiicicora, distinguished 

 by the bright chestnut colouring ot" its lower back, above which, in 

 the middle of the back, are a few black-tipped feathers, forming a 

 small black patch. It must be pl.nced next to the Brazilian Formi- 

 civora macn/ata, (Max.) {Leptorhtjnchtis striolutns, Menetries, Mem. 

 de I'Ac. St. P. 183.), pi. 10. fig. 2*), with which it agrees in form and 

 style of plumage. A single example of it is in the British Museum. 



.5. Dysithamnus semicinereus. 



(? cinereus, pHeointensiore ; subtxis med'ialiter alhicantior : dorso 

 postico et rem'ujum marcjinUms cum ventre imo olivascentibus : 

 tectricibus alarum tenuissime albo li)nbatis : rostro pedibuscpie 

 nigris. 

 ? olivacea, jnteo rufescente : yuiture medio albo, lateraliter 

 cinerascente : ventre Jlavicanti-olivaceo ; mandibida inferiore 

 basi (tlbicante. 

 Long, tota -l'.>, alse 2"4, caudae 1"G. 



In this apparently wqw Dysithamnus, of which the British Museum 

 contains several specimens, the cinereous colour in the male occxipies 

 the whole upper plumage down to the middle of the back, where it 

 gradually passes into olive, and the whole lower plumage down to 

 the middle of the belly, where a like colour supervenes. The middle 

 of the body beneath is much paler. The bill is rather longer than 

 in D. mentalis, but the form is otherwise the same. The genus to 

 which this bird belongs is certainly very closely connected with 

 Thamnophilus, but I doubt whether that form can be divided even as 

 a subfamily from the South x\merican Ant-thrushes. 



6. Pyrirlena tyrannina. 



<J niyricanti-cinereus, carpo summo et alarum tectricum margini- 

 bus albis : pluga dorsi medii interna nivea : subtus puulo pal- 

 lidior, rostro et pedibus nigris. 

 9 pallide brunnea, rufescente tincta ; abdomine toto dare rufo : 



mandibida inferiore, nisi apice alba. 

 Long, tota 5 "2, alse 2'5, caudse 2'2.5. 



A scries of specimens in the British Museum clearly connect the 

 somewhat dissimilar male and female of this species, which it is diffi- 

 cult to place satisfactorily in any of the present established genera 

 of this family as far as I am acquainted with them, though without 

 doubt a member of the group, with somewhat of a Tyrannine aspect. 

 The characteristic white patch underneath the feathers of the back 

 is well marked in both sexes. 



* M. Menetries has made this bird a second species of hi% ge\\\i% Lepiorhynchus, 

 but I do not think it can be satisfactorily arranged along with the peculiar form 

 which he has made the type of his genus ; and the name Leptorhynchus being 

 preoccupied, I propose to change it into Psilor/iamphm. Type P.gidtatus, niihi. 

 (Leptorhyncfius ffudatus, Men. pi. 10. tig. 1.) 



