STUDIES IN NEOTROPICAL MALLOPHAGA—CARRIKER 923 
being wider than in any other known race of brevipes; the mandibles 
and buccal cavity are much narrower than in ¢taod or rujiceps, being 
equal only to brevipes in this respect. All measurements run very 
close to those of the male in ¢ao2, there being, however, a few discrep- 
ancies but nothing outstanding. All measurements of head and tho- 
racic segments are somewhat smaller, except width at temples, which 
is slightly greater; the abdomen and antennae are also shorter. 
The genitalia are narrower at base of paramers than in ¢aoi, but 
otherwise essentially the same in all details. Measurements are given 
with those of K. b. ruficeps. 
KELLOGGIA BREVIPES RUFICEPS, new subspecies 
FIGURE 28, m, n 
Types.—Male and female, adults, from Ziénamus serratus ruficeps, 
collected by the author at Tierra Nueva, Sierra Perija, Collomne, July 
19, 1941; in U. S. National Museum. 
DBoaraacte. litiats race also is close to &. b. taovz. The frons is less 
flattened and somewhat undulating, this being the only race here 
described that exhibits this character, while the sides of the prean- 
tennal area run straight back in a line with the temples. The lateral 
bifurcation is much narrower than in fa@oi; the whole insect is uni- 
formly smaller. In the female the shape of the frons is very close to 
the female of taoz, but the antennal bands in both sexes are similar to 
those of mexicanus, having the more deeply pigmented incrassation in 
their anterior portion, but with rounded, not pointed, posterior ends. 
The head in the male is shorter at the temples and occiput (than in 
taoi) but of the same width at temples and narrower at the frons. 
In the female the head is of equal length and breadth at the temples, 
MEASUREMENTS OF KELLOGGIA BREVIPES 
ruficeps 
chocoensis (nale) |————_-- —_—_—_— 
Structure Male Female 
Length | Width | Length | Width | Length | Width 
a See 
ee eee 
FrONS He He Rea nS ese Os 2 fips) | Hiaasen OF25: Glam aaa 0. 27 
Fead tem ples samen an enema atic we aie 0. 62 0. 678 0. 586 0. 66 0. 70 0.71 
COREL UG CAN RU hal Dal ilk (GR 2a bar en ORAS Sit Untheeene lei 0. 575 
IPTOGHOTAK aye Denes tee Ue Pes 0. 206 0. 37 0. 18 0. 37 0. 195 0. 38 
IVICSOETMOTS Keates WNW e aN Nidze dob al Ged SRA SS 0. 30 0. 62 0. 28 0. 586 0. 305 0. 63 
Mictathorax Wlalme uu near Wa CN ee 0. 28 0. 467 0. 26 0. 467 0. 29 0. 50 
JIN) oY 6 (aS 00s) sada Ea RUE a a 1.05 0. 95 0.97 0. 868 1. 28 0. 97 
PASE OTATIAG a Se ewe ee ete ei are ee 0. 24 0. 04 0. 20 0. 043 0. 20 0. 043 
IRAP ATTIOLS aaa maT NUS ub Na aa OSE SLL Lp 0. 12 0. 068 0.12 OXOG5y | oun 
Hndomeral:platews ee anes 0. 066 0. 033 0. 07 0. 033 
LLL ELL LLL LE LL  SS 
