Embryos and Nestlings of Centropus sinensis. 659 
Fig. 3. 
Dorsal aspect of the right wing of the nestling Centropus sinensis, 
Stage 2, to show the positions of the developing coverts and remiges. 
The wing is eutaxic. 
Explanation of the lettering. 
t. mar. — 
teetrices marginales. 
t. min . = 
„ minores. 
t. med, = 
„ mediae. 
t. maj. = 
„ majores. 
al. sp. = 
ala spuria. 
c. c. = 
carpal covert. 
c. r. — 
„ remex. 
par. = 
parapteron. 
cub. = cubitals or secondaries. 
me. d. = metacarpo-digitals or primaries. 
1. 2. 3-10 = „ „ 
1. 2. 3-12 = cubitals 1-12. 
7 = 7th major covert. 
The following somewhat tabular statement will, when 
taken in conjunction with the diagram, best represent the 
arrangement of the tract :— 
Outer Aspect. 
Manus. 
Primaries. 10. The 4th to the 7th are the largest. 
Tect. majores. 10. 
Tect. mediae. 4 only—viz., the 3rd to the 6th of the series. 
These are not present in Stage 1. 
Tect. minores. i 
Tect. marginal, f As J' et unre P resented - 
