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Show 127 Measurements. I i Locality. 3 & RR IcHftd.. US j9? ad.. Do ! cf ? ad.. Do cf ? ad: Do , d" jav.: Do ? jnv.: Do ifjnv.: Do Vjav.: I Demerara 5.70 Bahia | 6.30 do ' 5.50 Venezuela ( Kan Estaban) | 6.50 New Granada i 5.40 Veraeua ( Santiago) ' 6.10 Rio Janeiro ! 6.10 do i 6.35 I 4.50 4.90 4.10 4.80 4.90 4.90 5.30 5.50 0.45 0.50 0.45 0.50 a 45 0.50 0.50 0.52 1.60 1.90 1.55 1.80 1.50 1.80 1.90 1.85 1.10 1.30 1.30 1.10 1.25 1.35 1.35 Collected by- Wncherer. Do. G ( Bring. ( Verreaas.) E. Arce. List of specimens examined.- In Mas. O. Salvin, 7; G. N. Lawrence, 2 { Panama) ; Pbilad. Acad., 3 ( Cayenne); Boston Soc, 2 ( Brazil, Venezuela, Cayenne); American Mns., Xew York, 3 ; R. Ridgway, 1 ( Demerara); total, 18. NISUS (? HIERASPIZIAS) COLLARIS. Mieronisus collaris KAUP, MS. in Mus. Brit., unde- Jceipiter collaris SCL. Ibis, ii, 1860, 148, pi. vi ( adalt and yonng).- LAWRENCE, Ann. Lvc. N. Y. 1862, 8 ( New Granada).- GRAY, Hand List, i, ld() 9,33.- SCL. & SALV. Nom. Neotr. 1873, 120.- SHARPE, Cat. Ace. B. M. 1874, 114.- SALV. Ibis, iv, 1874, 321. Xisus collaris GIEBEL, Thcs. Orn. 1872, 263. Hab.- New Granada. SP. CH.- Whig, 6.75- 7.00; tail, 5.00- 5.50 ; culinen, 0.55; tarsus, 1.75- 2.00; middle toe, 1.28. Fourth quill longest; first shortest; outer four with inner webs sinuated. Tail even. Adult ( t):- Above dark van-d. vke- brown, becoming blackish on the pileum ; a nuchal collar of white, with the tips of the feathers dusky. Tail brownish- slate, crossed by five bands of black, about equal in width to the slaty bands. Lower parts white, marked everywhere, except on throat, with very regular, sharply- defined broad bars of vandyke- brown, averaging nearly or quite as wide as the white interspaces. Young:- The dark brown of the adult (?) replaced by ferruginous, this brightest on the tail, which has six instead of five black bands. ' Lower parts " cinnamomeous- white \ the tibiae more rusty, the sides barred, as in the adult. ( Fidi Sclater, Ibis, 1860, p. 149.) We are not satisfied as to whether the above description of the supposed adult is really the mature stage or the brown phase of the young. Our description is taken from the specimen in the museum of the Philadelphia Academy of Natural Sciences, which came from Bogota. APPENDIX. Regarding Falco poliogaster Temminck and Astur pectoralis Bonaparte, mentioned on page 91, we have, as yet, seen no specimens. We strongly incline to the belief that they will be found different from the true JVm, and each sufficiently peculiar in details of form to constitute a- subgenus by itself. Regarding F. poliogaster, Mr. Gnrney writes us that it is more like Leucopterni8 in its generic characters than typical Nisus; and we regard the remarkable coloration of A. pectoralis is a sufficient cause for suspecting the impropriety of referring the latter species to either section of the genus Nisus as defined in our monograph. ( See Sclater, Ibis, 1861, pp. 313- 314, pi. x). The synonymy and specific characters of these two aberrant species are as follows:- |
