Plate XXX. 



(EDICNEMUS SUPERCILIARIS. 



(Edicnemus super ciliaru 



(PEEUVIM THICK-KNEE). 



Tsch. Wiegm. Arch. 1843, 1, p. 387, et Faun. Per. pp. 49, 293. 



Supra griseus, fusco marmoratus, loris, capitis lateribus et superciliis latis albis, his striga nigra supra et subtus 

 marginatis : alarum remigibus externe riigris, intus albis, apicibus omninb nigricantibus : rectricibus albis, griseo 

 transfasciatis, apicibus late nigris : subtus albus, pectore fuscescente, cinereo irrorato : crisso fulvescente tincto : 

 rostro nigro, basi olivaceo, pedibus olivaceis : long, tota 1*3, alas 8'5, cauda3 5*0, rostri a rictu 1*8, tarsi 3*5. 



Hah. in Penivia occidentali. 



This little-known Thick-knee varies considerably from the normal colouring of its congeners, 

 and more nearly resembles one of the allied genus Esacus in general external appearance. 

 It is, nevertheless, a typical (Edicnemus in form, and of great interest as forming a second 

 American species of this widely diffused group. 



The Peruvian Thick-knee was discovered by Tschudi, in the western coast-region of Peru, 

 north of Lima, near the Port of Huacho, and fully described in his well-known Fauna Peruana. 

 Although Tschudi states positively that it is different from (Edicnemus vocifer (CE. bistriatus, 

 Wagler) no other succeeding writer has been content to recognize it : both Gray* and Schlegelf 

 considering it to be the same as Wagler's species. The points of difference between the two 

 birds are ; however, very obvious on comparison. (Edicnemus superciliaris is a smaller 

 species than (E. bistriatus. Its ground-colour above is grey instead of dark brownish black, 

 and the markings are less denned and much more minute. It has, likewise, a well-defined 

 black stripe beneath the prolonged white superciliary mark, which is not found in the allied 

 species. There are, besides, many other differences, which we need not enlarge upon. 



Our figure of this fine species is taken from a specimen, not quite adult, in Messrs. Salvia, 

 and Godman's collection, labelled as having been killed in the valley of the Eimac, near Lima. 

 It is the only example of this bird we have yet met with. 



Gren, of B. App. p. 25. 



t Mus. d. P. B. Cursores, p. 19. 



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