214 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
and ¢aoz in one group, with robustus, mexicanus, and bolivianus form- 
ing the other. 
I have not yet discovered a way of separating the females of some 
of the races, but the males are easily distinguished by the genital 
armature. O. solitarius and taoi are easily recognized by their nearly 
straight paramers, while alienus probably also falls into this category. 
Further study and additional material may show that those forms 
with the straight paramers should be classed as one species, with the 
robustus group as another. For the present it seems best to classify 
the known forms of the genus as follows: 
ORNICHOLAX ALIENUS ALIENUS (Giebel) 
Goniocotes alienus GIEBEL, Zeitschr. fiir ges. Naturw., vol. 28, p. 389, 1866. (Host: 
Crypturus macrourus.) 
Strongylocotes alienus (Giebel) TASCHENBERG, Die Mallophagen, p. 59, 1882.— 
CARRIKER, Lice of the tinamous, p. 93, 1936. 
It is my opinion that we do not know the true host of this insect, and 
owing to the poor condition of the type itself we may never be able to 
identify it with fresh material. 
ORNICHOLAX ALIENUS ROBUSTUS Carriker 
FIGuRE 27, 0b 
Ornicholag robustus CARRIKER, Uniy. Nebraska Studies, vol. 3, ‘No. 2, p. 29, pl. 9, 
figs. 1, 1c, 1903. (Host: Tinamus robustus=T. major castaneiceps.) 
Ornicholaxz robustus robustus CARRIKER, Lice of the tinamous, p. 171, pl. 30, fig. 
2, 1936. 
This race has been fully discussed above, so that no further comment 
is necessary. The figure of the male genitalia published by the author 
in 1936 is not correct in several details, and a corrected one is here- 
with presented, which was drawn from the type. The head is wider 
than long in this race. 
Seven males and six females taken on two individuals of Zinamus 
serratus rujiceps, collected by the author in the Sierra Perija and the 
Sierra Nevada de Santa Marta, Colombia, are almost identical in size 
with specimens from 7. major fuscipennis (=O. a. mexicanus) and 
are also very close in size to O. a. robustus, while the males have the 
genitalia very close to the latter. The distal end of the endomeral plate 
is the same, as well as the lateral lobe at base of paramers. The only 
difference seems to be a slightly different structure at the basal portion 
of the endomeral plate. This small detail, the only discrepancy be- 
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