290 Univt rsity of California Publications in Zoology I V(,L - ln 



2714-2717'. Tahquitz Valley, two (nos. 2786, 2787), Vandeven- 

 ter Flat, two (nos. 2304, 2305), Garnel Queen Mine one (no. 

 2445), Dos Palmos, One qo. 2542). 



Lanivireo solitarius cassini (Xantus) 

 Cassin Vireo 



Found in fair abundance in such portions of the Tran- 

 sition /one as were visited by our parties. Many were seen a1 

 Garnet Queen Mine the last week in June, and in Strawberry 

 Valley, during July; immature birds appeared in numbers in 

 Tahquitz Valley the latter half of July. Other points of record 

 were Keen's ('amp and Schain's Ranch during June. A small 

 juvenal, bu1 recently from the nest, was taken at Garnel Queen 

 M inc. June 26. 



Seventeen specimens were collected: Schain's Ranch, two 

 (nos. 1809, 1810), Strawberry Valley, Pour nos. 2718-2721). 

 Talu|inix Valley, six nos. 2780 2785 . and Garnel Queen Mine, 

 live (nos. 244(1 2450 . 



Vireo huttoni huttoni Cassin 



Ilntton Vireo 



Encountered at just one point in the region explored, at 

 Garnel Queen Mine. Santa Rosa Mountains, altitude 6000 feet. 

 Here, in high Upper Sonoran, the species was fairly abundant. 

 Five specimens were taken (nos. 2401 2405 . three adults in 

 worn plumage and two full-grown juvenals. 



Vireo belli pusillus Cones 



Least Vireo 



An abundanl species in suitable portions of the Lower Son- 

 oran zone along the streams in the lower parts of the canons. 

 where there was sufficient vegetation Tor shelter. In lower Palm 

 ( 'anon, the middle of June, they were pari icularly numerous, from 

 its mouth up to Little Paradise Valley, altitude about 3000 feel. 

 At the mouths of Palm and Murray canons the least vireos fre- 

 quented the dense thickets of mes<|iiite and arrowweed. In Little 

 Paradise Valley and at one or two other points in the canon, 



