1 66 Anthony, Ne-v Binh from T.o-.ver Californid. Twu 



In a large series of C. ampins and C. in. frontalis I am unable 

 to find either the grooved upper mandible or any approach toward 

 parallel outlines on the basal third of the bill. The rosy colors 

 in Dicgregori are confined to definite areas, those of the liead and 

 rump being especially well-defined, and in none of my specimens 

 is there any rosy suffusion over the upper parts, as is often the 

 case with C. frontalis. There seems to be some variation in the 

 intensity of the orange and rosy tints, some males being almost 

 entirely orange over the rump, breast, and forehead, and one bird 

 which escaped me seemed to be clear lemon yellow on those 

 parts. 



McGregor's Finch seems to be rather rare but well distributed 

 over the island that we explored, the largest of the group of three. 

 There is very little vegetation on this island, which is little more 

 than a reef less than two ( ?) miles in extent, and it is rather 

 surprising that a species of this genus should be found there 

 at all. 



Thryothorus cerroensis, sp. nov. Cerros Island Wren. 



Sp. cJiar. — l")ilters from Tliryotliorns Icucop/irvs in much shoitcf liill, 

 flanks less deepl\ j^ray. and upper surface darker. 



Type, No. 7391, adult, sex undetermined, coll. A. W. A., Cerros Island, 

 Lower California, Sept. 3, 1S96. 



Above sepia; chin, throat, superciliary stripe and middle of breast and 

 belly grayish white; sides of neck, breast and flanks smoke gray; under 

 tail-coverts grayish white -vvith a buffy tinge, barred with black ; tail 

 blackish, middle feathers barred with black and clove brown ; rectrices, 

 except middle pair, broadly tipped with cinereous. Wing, 48 mm.; tail, 

 55; exposed culmen, 11. 5 ; depth of bill, 3; tarsus, iS. 



The present species needs comparison with none of our western 

 species of the genus unless it be T. leucopJirys., from which it is 

 very easily separated by its much shorter bill, as well as other 

 discrepancies in size, as will be seen from the accompaning table 

 of measurements. From specimens before me taken at Rosalia 

 Bay, 55 miles east of Cerros Island, the new species is easily 

 separated by much more extensively gray lower parts, less heavily 

 barred. The lower tail-coverts, and its tail-feathers have a terminal 

 band of gray of not less than 4 mm., whereas the mainland bird 



