412 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 150 



The first definite record for this subspecies was by Griscom (Bull. 

 Mus. Comp. ZooL, vol. 72, 1932, p. 322), who reported a male from 

 Perme, San Bias, taken by Wedel. Through the kindness of Dr. R. A. 

 Paynter, Jr., I have been able to verify the subspecific identification 

 of this specimen as L. g. griseus and find that it was collected on 

 October 25, 1929. The gray of the back agrees in dark color with 

 typical griseus, being definitely darker than that found in hendersoni 

 to which it had been allocated with uncertainty by Pitelka (cit. supra, 

 pp. 44, 49, 79). Three that I collected at Mandinga, San Bias on 

 January 29, and February 6, 1957, and four from Aguadulce, Code, 

 January 18 and 19, 1963, also are of the typical subspecies. 



LIMNODROMUS GRISEUS HENDERSONI Rowan 



Limnodromus griseus hendersoni Rowan, Auk, vol. 49, no. 1, Jan. 4, 1932, p. 22. 

 (Devil's Lake, Alberta.) 



Characters. — Similar to griseus, but lighter gray on the dorsal sur- 

 face; also paler on the under surface of the body, with the throat 

 distinctly whiter. 



Measurements (Birds from Alberta and Saskatchewan, from 

 Pitelka, I.e., p. 32).— Males, wing 136-150 (143.4), culmen 52.6-61.2 

 (57.5), tarsus 33.8-39.3 (36.7) mm. 



Females, wing 138-152 (145.7), culmen 58.2-65.9 (62.4), tarsus 

 35.3-41.3 (37.9) mm. 



Migrant from the north. Known at present from one record. 



A specimen in the American Museum of Natural History, collected 

 at Aguadulce, Code, September 11, 1925, by R. R. Benson, is the 

 only record for this race. The bird was listed by Griscom (Bull. Mus. 

 Comp. Zool,, vol. 7d>, 1935, p. 307) as scolopaceus, but on examination 

 of the specimen I find that the barring on the tail and upper tail 

 coverts is that typical of the griseus group, in which the black and 

 white bars are about equal in width. The specimen is in transition 

 from summer to winter dress, and because of this it requires careful 

 study for definite identification. The few remaining colored edgings 

 on the scapulars and longer tertials are paler, and are bufif, rather 

 than the cinnamon of these markings in L. g. griseus. The hindneck is 

 slightly brownish, due perhaps to foxing, but on the whole this area 

 is paler as in hendersoni. 



This is the most southern record reported for this subspecies. 



