BANGS: BIKDS AND* MAMMALS FROM HONDURAS. 157 



Clmraders. — Nearest to Arremono'ps conirostris richmondi Ridg. but slightly 

 smaller, especially the bill ; darker in color throughout ; breast and sides 

 darker and purer gray ; flanks less suffused with olive-green or brownish; tail 

 and wings much darker green, wholly lacking the reddish or brownish olive of 

 those parts in A . conirostrk richmondi ; back much darker — true olive-green ; 

 bend of wing and lining of wing paler yellow. From Arremonops chloronotus 

 (Salv.) the new form difi"ers in larger size, and in the crown stripes being 

 wholly black unmixed with brown. 



MeasiLrements : — 



No. Sex. Wing. Tail. Tarsus. CuFmen*! 



10,141 Type 9 ad. 72. 67. 27. 15.0 



10.139 Topotype 9 ad. 72. 57.5 28. 16.2 



10.140 do. cf ad. 70.5 63. 27.5 15.8 



Remarks. — Arremonops conirostris centralis is intermediate between A. coni- 

 rostris richmo7idi and A. chloronotus, but different enough from either to deserve 

 a name. In the birds of North and Middle America, Ridgway^ records 

 A. conirostris richmondi from southern Honduras (Segovia River), and A. chlo- 

 ronotus from northern Honduras (San Pedro Sula), but specimens of the genus 

 were not available from between these two regions, the area occupied by the 

 new form. 



MAMMALS. 



Didelphis yucatanensis Allen. 



One young adult 9; Yaraca, 1,000 feet, Feb. 13, 1902. This specimen 

 differs somewhat from true D. yucatanensis, and more material might prove 

 the Honduras animal to be separable. The large opossums, on the other hand, 

 are so variable that the peculiarities of this example may be only individual. 

 The skull and teeth are slightly larger than in true B. yucatanensis, and the 

 rostrum more swollen ; the under fur also is buffy, or ochraceous to, in places 

 yellowish. 



Dr. Merriam has very kindly compared the specimen for me with the origi- 

 nal series of D. yucatanensis, where he was imable to match it exactly. The 

 flesh measurements taken by the collector are as follows : total length, 590; 

 tail vert., 320 ; hind foot, with claw, 60; ear from notch, 45. 



Cyclopes dorsalis (Gray). 

 One 9 ; Ceiba, January 22. 



1 Bull. U. S. Nat. Mus., 1901, No. 50, Part I., pp. 452 and 454. 



