oe oo) BANGS — SUBSPECIES OF MANACUS MANACUS 37 
1099 
Subspecific characters.— Size smaller, and tail longer, than in the other forms. 
Adult male, similar in color to 1/7. manacus manacus, except that the belly and 
breast, ending in an even line at jugulum, are dark gray, varying from slate 
gray to gray, no. 6, of Ridgway. The belly and breast of 7. m. manacus are 
white. 
Size.— Five adult males from Bahia, Brazil, range as follows: wing, 46.- 
49.8; tail, 30.2-34.4; tarsus, 20.-20.6; exposed culmen, 9.2-10. mm. 
Remarks.—The smaller size, longer tail, and very dark under 
parts of AZ. m. gutturosus distinguish it from the other forms. 
Strangely enough, it is most different in color from the form, JZ, 
m. purus, that comes the nearest to it geographically, and is most 
like the one, JZ. m. abditivus, that is the farthest away. I have 
seen no specimens from regions where JZ. m. gutturosus meets the 
range of any other form. It is quite possible that this little, 
long-tailed form, with its dark gray belly, may have already 
become specifically differentiated from the other members of the 
Manacus manacus series. 
