Plate XXX. 



(EDICNEMUS SUPERCILIARIS. 



(PEEUVIM THICK-KNEE). 



(Edienemus superciliaris . . Tseli. "Wiegm. Arch. 1843, 1, p. 387, et Faun. Per. pp. 49, 293. 



Supra griseus, fusco marmoratus, loris, capitis lateribua et superciliis latis albis, his striga nigrS, supra et subtiis 

 marginatis : alarum remigibus externe nigris, intus albis, apicibus omnino nigricantibus : rectricibus albis, griseo 

 transfaseiatis, apicibus late nigris : subtus albus, pectore fascescente, cinereo irrorato : crisso fulvescente tincto : 

 rostro nigro, basi olivaceo, pedibus olivaceis : long, tota 1'3, alse 8'5, caudse 5'0, rostri a rictu I'S, tarsi 3'5. 



Hab. in Peruvia oecidentali. 



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

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

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

 American species of this widely difiPased group. 



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

 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 fr-om CEclicnemus vocifer (CE. histriatus^ 

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

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

 birds are, however, very obvious on comparison. CEclicnemus superciliaris is a smaller 

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

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

 black stripe beneath the prolonged white superciliaiy 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. Salvin 

 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. 



* Gen. of B. App. p. 25. f Mus. d. P.B. Cursores, p. 19. 



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