----s OHAULELASMUS STREPERA. 
- Kti. Mas.—Cinereus et albus; speculo atro; tectricibus castaneis. 
Kti. Fem.—Brunnea, marginibus pennarum suturatioribus. 
GADWALL. 
Male, grey and white; speculum velvet black; primary coverts 
chestnut. 
Fem. brown, with the margins of the feathers lighter. 
IN. IN. IN. 
Length... ... 21 Billa ives 3 PArst srs. 3 
_ Male: head and neck brownish, marked with dots of grey-brown ; 
upper part of the breast and lower part of the neck grey-brown, each 
_ feather marked with a lunule of white ; back the same, thickly barred 
with white; tertiaries grey, the edges light; speculum black, 
anterior to which there is a reddish chestnut patch formed by the 
greater primary coverts, posteriorly one of white; lower part and 
under tail coverts black; quills and tail grey; bill black ; legs fuscous. 
- Fem.: with the speculum as in the male; remainder of the 
plumage as in the female of the common wild duck. 
OQRAUADSMUS 25 cas ceey cr cus da> ove G. R. Gray. 
Chauliodus streperd .sccccccsceee Gould, Huropean Birds. 
CEOS SEP EPCLG von fe 0 cde y hak cadsen Linn. Syst. 1. 200. 
Gmel. Syst. 1. 520. 
Lath. Ind. Orn. 2. 859. 
Ktinorhynchus strepera sc. Nobis. (See preface, Mon. 
: Anat.) 
CFO aks Pe fate bahzotten sess Penn. Arct. Zool. 2.575. 
DCD i is cap saceavinceavenasdion Buff. Ois. 9. 187, pl. 12. 
RIC WEU: sass Ccuctae'coe chan neha tenon Linn. Trans. vol, 4, tab. 18, 
Agi 8: 
A very widely-distributed species. We have received specimens 
from India, Africa, and America. It is also enumerated in the 
British lists, and is not uncommon in Holland, where it breeds in 
marshes among rushes, laying eight or nine ashy green eggs. 
Tube of the trachea enlarged about one-third of its whole length 
from the lower extremity, and again contracted above the inferior 
larynx. Inferior larynx with a projection on the left side and before; 
anteriorly very slightly acuminate. 
i 
