PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 333 



lODTO. Adelarns hcnipricbi. 

 10D80. IcthyaiJtns pallasi. (Juv.) 

 10981. Cbroicocej)halns ridibundus. 

 1098'.^. capistratus. 



1098;5. brunueicephahis. 



11001. Hydrocobmis minuttis. 



11002. Gelastes uovje-boUanditB. 

 11004. andersoui. 



Subfara. Sternin^ (III, p. 117). 



11030. Sterna longiiieniiis. 

 11034. froutalis. 



11044. Actochelidou cantiaca. 



11045. affinis. 

 llOf)?. Tbalassens beigii. 



llOot). iiovie-bollandiae. 

 11032. Stermila miiiuta. 

 11071. Pelodes bybrida. 

 11078. albistriata. 

 . vittata. (Kerguelen Isl- 

 and.) 



11031. Halipbana hinata. (Type.) 



11082. ThaUissipora iufuscata. (?) 



11083. Gygisalba. 



11089. Procellosterna cinerea. 



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

 11098. Phaeton rubricaudus. 



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



11102. Plotus novae-liollandiae. 



Fam. PELECANID^. 



Subfam. Graculin^ (III, p. 126). 



11114. Gracubis uovse-hollandise. 

 11120. cristatus. 



11124. gbaucns. 



11134. Hypolencus varius. 



11135. leucogaster. 

 11137. caruuculatus. 

 11140. Stictocarbo pnnctatns, 

 11142. Microcarbo pygmiens. 



11144. melanognatbos. (?) 



1114(i. brevirostris. 



11149. sulcirostris. 



Subfara. PELECANiNJi; (III, p. 129). 



11151. Pelecjfuus onocrotalus. 



11152. crispus. 



11153. mitratus. 



11154. javanicus. 



11158. Catoptropelicauus conspicillatus. 



Subfam. Atagenin.^. 

 111G2. Atagen minor. 



NOTES OIV SOIVIE: COSTA RICAN BIRDS. 



By ROSEKT RIDGWAY. 



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

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

 Jose : 



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



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 comjjared vrith Lafresnaye's type of the species, and found to differ in 

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

 white", 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 jiale yellowish, showing that the difference was the result of fading 

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



