1869. | ON BIRDS FROM THE ARGENTINE REPUBLIC. 631 
by me. Of those here enumerated I have seen specimens of every 
one except 7’. riedeli, which, however, is undoubtedly a very distinct 
species. 
A. Macula dorsali alba. 
a. Subtus cimnamomina ....... sclefn/e ets Felvemaetide ducueet . 1. ZT. sylvia. 
4. Subtus alba, 
a', Scapularibus saturate ultramarinis: tectricibus 
supracaudalibus cum rectricibus cruleo 
IMEEP Win tls! < .wanssendevacaae anes aveaees dens eesmeeas 2. T. doris, 
6'. scapularibus nigris, ultramarino clare lavatis : 
tectricibus supracaudalibus cum rectricibus 
BIPISM.Lecei oodcbcdcottceek tee eh ee ated oor seonee 3 TD. sabrina. 
B. Macula dorsali nulla. 
a, Uropygio coccineo ...... SesSnonE Disc sbacE eaeeaneas antetstns 4. T. nympha. 
4. Uropygio albo. 
a’, Cauda haud spatulata ..........ccrcesseseesseee ww. Of TL, ellioti. 
b'. Cauda spatulata. 
a'', Genis, regione parotica et collo postico 
nigris. 
a”, Rectricibus exterioribus nigris, cs- 
ruleo marginatis.............s00c00e 6. 7. hydrocharis. 
b''. Rectricibus exterioribus albis, cseru- 
Teo) MarPinatiss: sec. c0ccece dees does 7. T. acis. 
4". Genis, regione parotica et collo postico 
saturate ceruleis. 
a". Pileo ultramarino: superciliis cum 
nucha cyaneis: tectricibus cau- 
dalibus postremis nigris ......... 8. I. margarethe. 
b'". Pileo concolori: tectricibus caudali- 
bus omnino albis. 
a''", Dorso cyaneo maculato ...... 9. T. nats. 
BME Dorso COnCOLOrItesssorssec.-ae 10. Z. galatea. 
e"', Genis, regione parotica et collo postico 
VARIGI-CY ANIA er acsss ews csasnee she sossve LL. LZ. ruedels, 
7. Third List of Birds collected at Conchitas, Argentine 
Republic, by Mr. William H. Hudson. By P. L. Scuarsr, 
M.A., Ph.D., F.R.S., and Ospert Satvin, M.A., F.L.S. 
A third collection of birds formed by Mr. Hudson at Conchitas 
having been submitted to our examination by the authorities of the 
Smithsonian Institution, we beg leave to communicate the following 
notes on it. 
The collection contains about 260 specimens, referable to ninety- 
two species. Those not included in the two former lists (P. Z. 8S. 
1868, p. 137, and 1869, p. 158), or which require further remarks, 
are the following :— 
1, Parva pitrtayumi (Vieill.). 
Sylvia pitiayumi, Vieill. N. D. xi. p. 276, et E. M. p. 479, ex 
Azara, no. 109, 
Sylvicola venusta, Burm. La Plata-Reise, ii. p. 473. 
