mcus OF THE OREGON DESERT. 
,|,c. I.....K.ru» of an old male A. carolinensis refe,-md to 
II I. in-Pia-i.lil.lj larp H" " millimetres. 
with the cones, xmding ones in skeletons of the exist- 
illir nljfCHt*. 
(•4,1,1. wilIcH-tion : l->iuu« Ui cJrt ol Oregon. 
AK*ii rv*xon^»:K*T 
I 
ruiii|mnw,li 
funiit. 
riifortunau-lv I failwl t" «-eum a lecent skeleton of the O.n.mmon leal for 
It i. » verv abundant Duck in many loeaht.es m the ^I cst where in 
,.,n,a r Til the writer iia. kille.1 many of them. In the present collection I find 
[""riniineri itline iwriW-t) ; seven iihiiv (six iierfect) ; five oar,^me,aearpi ( wo 
Lriv i.Tfis-t): riiiir niilii (imrfeet) | three coracoids (perfect,; an i.n|)erfeot 
.•.,.i;i. tlins. reliion, (two iw-rfeet) ; two tihimtarsi (nnporfeet) ; and two tarso 
I,i,.;„i„i,i (one nearly lerfm-t) all of which In-longed to a Teal Duck larger than 
Uas diseors. Taking i.yi.rvtl.ing into con.si<leration it would seem most probable 
Ihnl lli.-m. r.amil la.iifs iK-loiigi.il to HiK'ciiuens of this species. Indeed, I urn of the 
4, pinion that tli.- tlmn. Teals imw found in our avifauna, wbicli have been eniuuer- 
al.d nls.%- 1 .. i-xisUd during tiTtiary time (Pliocene) without much, if any luaterml 
changi* in llioir stnicture. 
IsMigth of hiinieriis (17 inillinietres. 
Is'iigtli of ulna (■<(» milliiiH.tres. 
Is.nglli tif niriM^nietarar|>us do inilliinetre.s. 
tHhor lames of pn,|H,rtioiiut<. lengths. Tlie shafts of the liumeri, relatively as 
Midi ns ai'liiiilly inucli sleiiden.r than in A. discors. 
|.«*Ihn'tion : Kipius IIimIs of Oregon, 
si-in i.* n.via.ATA. 
TIh* Shovi'ller is n.pres4.nti.il by nunierous fossil bones in the collection, and 
n|s,n coiiiparisoii I find tlu.iii to lx* identical wdth the corresponding ones as they 
iimir ill sk«.|<.toiis of that Duck in my own private collection. At the present time 
il is a v».ry (.oiiiinon siKrics in innny parts of the West. 
Pli«xH.|ic o( On-goii (Silvi‘r and Fossil hakes) : Cope collection. 
l»*rn.A AciTA. 
Hcpn'si.iitiHl ill die eollection by a iH*rfect humerus (right side), a jiair of cora- 
ciils. and S4.v».nd wnpuhc, the last more or less imperfect. The humerus of this, 
tin* Pintail Duck, is .piitc characteristie, and the fossil specimen in Professor Coiie’s 
4'..||.v(ini, njrnx.s aUdutely in all particulars with the right liiniierus of a specimen 
U.|..iignig to fi skcle(„ii of this s|KM:ie8 in the U. S. National Museum (No. 18,002), 
with which I have iM.mpare.d it. Tlie sliaft of the bone is of large calibre for its 
«ii(d I ant t 1 C sc\era] ehnrnctcrs of the extremities are strongly developed. It is 
m U 1 ' 't‘**,v light both in the fossil and recent specimens. The 
Iiliinrrir*t I i"'!i- **'V,.""** deep notch separates the humeral head from the 
nliiBrrn.st. Ix-nglh 8, millimetres 
