An Account of the Bird-lice of the Genus Docophorus. 173 
chitinous strip or neck and a triangular head—the neck being much longer 
than the head or that porton of the penis which projects beyond. 
The penis is generally straight. 
Length of the apparatus from tip to posterior edge of basal plate about 
‘46 mm. 
Docophorus calvus, Kell. 
The basal plate is barely so long as in acutipectus. In the proportion of 
4:3 to the rest of the apparatus. The paramera are broad 
and straight for more than two-thirds of their length. 
Thereafter they contract suddenly—the bend being more 
abrupt on the inner edge. Ventral hair at two-thirds. 
Base of paramera heavily chitinized and quadrangular in 
shape. The upper edge of the articulation with the 
mesosome not nearly above the lower, which protrudes 
as a thin ventral lamina clasping the base of the meso- 
some. 
The mesosome is conspicuous, filling all the space 
between the closed paramera. In shape it is an isosceles 
triangle with blunted apex. The endomeral unci are 
small and strongly curved. The endomera are closely 
approximated. The ventral pattern does not reach so 
far back as in acutipectus, and its constriction is almost 
median. Each endomeron bears near the apex at the 
side three hairs in a row, and one a little behind these 
but below. Apices of endomera truncate and hardly 
reflexed. The telomera are linear, inconspicuous and projecting little 
Fig, 2. 
Docophorus calvus. 
beyond the endomera. 
The penis is a little bent. 
The hypomeron is long, narrow, and ends before the apex of the 
endomeron. 
Length of the apparatus ‘5 mm. 
Docophorus celedoxus, N. 
The proportion between the basal plate and the free part of the apparatus 
is the same as in calvus, 4:3. 
The paramera are similar to those of calvus, but are not so robust and 
broad, neither are they so abruptly bent. The ventral hair is rather nearer 
the base than in calvus, well within two-thirds, Upper distal angle of basal 
articulation distinct, 
