Auk 
Jan. 
72 NELSON, Wew Birds from Mexico and Guatemala. 
Motzorongo, in Vera Cruz, in the same region from which came 
the original specimen, and I am now in position to properly locate 
the species generically. It forms a distinct type of Wren of 
generic value and having Microcerculus as its nearest ally. Some 
of its characters indicate a close relationship to Catherpes as well, 
so that its position appears to be that of an intermediate group 
between those two genera. 
The measurements of the two specimens in the collection are 
given below and show the proportions of the parts. With only the 
single species to deal with, it is difficult to decide between specific 
and generic characters, but the distinctive points named will serve 
until modified by the discovery of other species. - 
MEASUREMENTS OF HZylorchilus sumichrasti (Lawr.). 
5 a 
Sex. Locality. Date. Collector. Pl — B 
Z S m 3 
= |e | @ |] & 
od (?) | Motzorongo, Vera Cruz. | Mar. 5, 1894. | Nels. and Goldm.| 68 42 32 31 
ie) “ 73 ce “cc “é “ “ “ce 65 39 29 27.5 
These birds inhabit the gloomiest recesses of the heavy tropical 
forest, keeping about jutting rocks on steep hillsides, where the 
forest is so dense that the undergrowth is sparse and the sun 
scarcely penetrates to the ground. We found them only at an 
elevation of from about 800 to 1200 feet above sea level on the 
base of the Cordillera fronting the Gulf of Mexico. They appear 
to be very local in their distribution, for we searched for them in 
similar situations elsewhere in eastern Mexico without success. 
Hemiura pacifica, new species. Paciric WREN. 
Type, No. 142935, U. S. Nat. Museum, Dept. Agric. coll., g, Manzanillo, 
Colima, Mexico, February 8, 1896. Collected by E. W. Nelson (Orig. 
No. 46). 
Distribution. — The type and only known specimen of this species was 
taken at Manzanillo on the west coast of Mexico. 
Description. — Compared with HY. leucogastra and H. leucogastra 
brachyura from the east coast of Mexico this species may be distinguished 
