PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



10979. Adelarus hempriclii. 



10980. Ictbyaetus pallasi. (Jiiv.) 



10981. Chroicoceplialus ridibundus. 



10982. capistratus. 



10983. bruDueiceplialus. 



11001. HydrocoljBus miuiitus. 



11002. Gelastes novse-liollaudiai. 

 11004. audersoui. 



Siibfara. STERNIN.E (III, p. 117). 

 11030. Sterua longipeunis. 

 11034. frontalis. 



11044. Actochelidon cantiaca. 



11045. affinis. 

 11057. Thalassens bergii. 



11059. noviB-hollandiae. 

 11062. Stornula miuuta. 

 11071. Pelodes hybrida. 

 11078. albistriata. 

 . vittata. (Kergueleu Isl- 

 and.) 



11081. Haliplana lunala. (Type.) 



11082. Thalassipora infuscata. (?) 



11083. Gygisalba. 



11089. Procellosterna ciuerea. 



Fam. PHAETONTID^ (III, p. 124). 

 11098. Phaeton rubricaudus. 



Fara. PLOTID.E (III, p. 125). 



11102. Plotus uovaB-hollandia3. 



Fam. PELECANID^. 



Subfam. Guaculix/E (III, p. 126). 



11114. Graculus iiova?-bol]andiae. 

 11120. cristatus. 



11124. glaucus. 



11134. Hypoleucus varius. 



11135. leucogaster. 

 11137. caruucnlatus. 

 11140. Stictocarbo puuctatns. 

 11142. Microcarbo pygmasus. 



11144. melanognatbos. (?) 



11146. brevirostris. 



11149, sulcirostris. 



Subfam. Pelecanin^ (III, p. 129). 



11151. Pelccauus onocrotalus. 



11152. crispus. 



11153. mitratns. 



11154. javauicus. 



11158. Catoptropelicauus couspicillatus. 



Subfixm. AxAGENiXiE. 

 111G2. Atageu minor. 



NOTES OIV SOIVIE COSTA RI€AIV BIRDS. 



By ROBEKT RIDGWAY. 



The following birds, all»of greater or less interest, Lave recently been 

 received at the Xatiojial Museum from Sr. Don Jose C. Zeledon, of San 

 Jose: 



1. Catharus fuscater (Lafr.) Scl. (?) 



What seems to be a somewhat immature example of this species 

 appears at first sight to be quite a different bird from two fully adult 

 specimens, a male and a female, from the same country. In these adults 

 the throat and jugulum are entirely uniform dull ash-gray, while the 

 entire abdomen is white.* The specimen in question, however, has the 



* The male is the example mentioned by Mr. Lawrence (Ann. Lye. N. Y., ix, -p. 90) 

 as having been compared with Lafresnaye's type of the species, and found to differ in 

 having the "centre of the breast and abdomen pale yellowish fulvous instead of 

 Avhite", and the bill mainly bright orange instead of yellowish white. Now, how- 

 ever, after a lapse of thirteen years, I tind the same specimen with the abdomen 

 white and the bill pale yellowish, showing that the difference was the result of fading 

 of the older type specimen, as Mr. Lawrence himself suggested. 



