STUDIES IN NEOTROPICAL MALLOPHAGA—CARRIKER 95 
the absence of more material it is safer to consider the two pairs from 
this host to be of one form; in each pair the head is narrower in the 
male than in the female, and the female is much the larger insect. 
In the pair from Bolivia the cervical index is 1.5 in the male and 1.3 
in the female, and the total length is 1.95 mm. in the male and 2.03 
in the female. In the Peruvian pair the cervical index is 1.3 in the 
male and 1.25 in the female, and the total length is 2.20 in the male 
and 2.61 in the female. In true longipes the cervical index is 1.33 
in both sexes and the difference in total length is trivial (male 2.37; 
female 2.47). 
“T have much pleasure in naming Mr. Carriker’s form Pseudoli- 
peurus longipes carrikeri. 'The holotype male and allotype female 
(on one slide) are from Crypturellus obsoletus punensis (Chubb), 
Sandillani, Dept. La Paz, Bolivia, November 25, 1934, and have been 
returned to Mr. Carriker. The pair of paratypes which Mr. Carriker 
has very generously permitted me to retain are from the same host, 
La Oroya, Peru, June 6 and 12, 1931. All specimens were collected 
by Mr. Carriker. 
“The fact that my males from C. 0. obsoletus agree perfectly with 
Piaget’s type strongly supports the suggestion that the type of 
Pseudolipeurus l. longipes (Piaget) came from the nominate form of 
the host.” 
Remarks.—Dr. Hopkins notes that his measurements are not the 
same as published by me for the specimens under discussion and sug- 
gests that they were made from the projection of the image of the 
specimen, with a rule obtained by projecting a stage micrometer at 
the same distance from the projector and tracing the image on paper. 
However, I wish to take this opportunity of stating that all the 
measurements published by me in 1936 were made directly from the 
insect by means of an eyepiece micrometer calibrated to the magnifica- 
tion used. The error he mentions in the measurements, or rather the 
difference, was due to a mistake made by me in the calibration of my 
eyepiece micrometer; ali the measurements given in my “Lice of the 
Tinamous,” 1936, present the same error. <A true correction may be 
obtained by multiplying all the measurements by the constant 1.084. 
PSEUDOLIPEURUS TAOI PERUVIANUS, new subspecies 
Type.—Female, adult, from Zmamus tao kleei, collected by the 
author at La Pampa, Peru, July 5, 1931; in collection of author. 
This race is based on a single female (the type), which was pre- 
viously identified as P. taoz Carriker. A careful study of the addi- 
tional material from 7’. ¢. tao, collected in Colombia, together with 
the single female from 7’. tao kleez, shows that the Peruvian insect 
is not the same and deserves subspecific rank. 
