232 Mr. H. Seebohm on the Genus Himantopus. 
-4- Himantopus andinus. 
Recurvirostra andina, Philippi & Landbeck, Wiegm. Arch. 
1863, pt. i. p. 131. 
Plate : Harting, Ibis, 1874, pi. ix. 
Habits : Philippi and Landbeck, loc. cit. 
Eggs : unknown. 
The Peruvian Avocet (or Peruvian Stilt, as it should be 
called) is the only species of the genus having webbed feet 
and a hind toe which has no white on the secondaries. 
It is only known from a plateau of the Peruvian Andes, 
16,000 feet above the sea. 
The Peruvian Stilt is the sole representative of the Semi¬ 
stilts, which, according to my hypothesis, emigrated from 
the Polar basin along the Pacific coast of America. 
4 Himantopus mexicanus. 
Himantopus nigricollis , Vieillot, N. Diet. d^Hist. Nat. x. 
p. 42 (1817). 
Himantopus mexicanus , Ord, Wils. Orn. Amer. vii. p. 52 
(1824); et auctorum plurimorum. 
Hypsibates nigricollis (Vieill.), Cabanis, Schomb. Guian. 
iii. p. 758 (1848). 
Macrotarsus nigricollis (Vieill.), Gundlach, Journ. Orn. 
1856, p. 422. 
Plates : Wilson, Am. Orn. pi. 58. fig. 2; Sclater & Salvin, 
Proc. Zool. Soc. 1873, p. 453 (woodcut of head). 
Habits : Baird, Brewer, & Bidgway, Water-Birds N. Amer. 
i. p. 346. 
Eggs : Thienemann, Vogeleiern, pi. lxiii. fig. 6. 
The North-American Stilt is an intermediate form between 
the Common Stilt and the Chilian Stilt. It may be recog¬ 
nized by the distribution of the black on the back of the neck , 
which not only passes underneath the eye but also extends 
over the crown and joins the black on the mantle. Young 
in first plumage resemble adults, except that the black is 
replaced by brown. 
It breeds in the southern half of North America, and 
