STUDIES IN NEOTROPICAL MALLOPHAGA—CARRIKER DAG 
MEASUREMENTS OF ORNICHOLAX ALIENUS—Continued 
rebustus (from 7. serratus ruficeps) mexicanus (male 
from TJ. m. fus- 
cipennis, Costa Rica) 
Structure Male Female 
a 
Length Width Length | Width Length | Width 
J BXOYG tyt/ fe Hae aN ON al eat IA oe SR er PP ohn [in ease RAS! CHP HH Me eA eg DDB sit | SSUES ION, 
(Seg Uhh OP OU a RN eg 0. 78 0. 836 0. 80 0. 825 0. 79 0. 836 
IPT OLR OT axe ac Mes UNC A Mie edd de ee 0. 217 0. 50 0. 217 0. 50 0.195 0.50 
IVPOSO GOT Kee MER AEP Na NS Ca 0. 337 0. 868 0. 33 0. 846 0. 326 0. 89 
IVP TAL HOTA Xe eee NG etic) CUR a SAMO CURA ao 0. 337 0. 59 0. 326 0. 61 0. 337 0. 59 
PANT GOT OMe UNE LEM Mev vk Mave 1, 27 1. 21 ~ 1,49 1, 28 1. 28 1.17 
ANI CONTAC UE IF eis UME ORT SOE Ee ER 0. 31 0. 043 0. 31 0. 045 0. 326 0. 05 
DEXSN GoW TONS) ogee RE TEE EAA Thea ART a 0. 206 COSCO) aS fd esetenelay eo jules | NR 0. 20 0. 054 
Hndomeraliplate snare eee enna an 0.11 (OCG sayin Ra ne tier NG Ae Se 0.13 0. 043 
boliviensis taoi 
Structure Male Female Male Female 
Length| Width | Length| Width | Length] Width | Length| Width 
TS YO{G byi2 aleventte WARES aU 10 2A ee ed PA: OUND | eee AGOK | eee PRO (eye Te 2. 62 
PETC Gea eheaiyearatec UR Miles ROL NS  WURL 0. 78 0. 78 0. 84 0. 836 0. 76 0. 70 0. 84 0. 836 
ROUT OTAK ew MMs bi Bye RIN CRE Bula 0. 228°} 0.50 0. 23 0. 52 0.195 } 0.49 0. 23 0. 54 
WY LSXSyoy HOY ey Et. CL MA lh SACI WAU a eT CE 0. 32 0.868 | 0.34 0. 92 0. 32 0. 76 0. 34 0. 84 
IVICCALH OLAX A ween slom ML nse aU ond 0. 30 0. 57 0. 347 0. 63 0. 29 0. 54 0. 326 0. 59 
HAD GOINGS Ss BEML a aN JON 1.30 No ile 1. 60 1. 33 i, Al 1. 04 1. 56 th ile 
PA EOTITI. CM aeuiare Miele tige SBM latte, AWE yA 0. 30 0.05 0. 326 0. 043 0. 26 0. 043 0. 326 0. 0438 
PAPAIN OTs See wuiie a wreue enn nen AERC CON ORGS PV ONOS 7 iy enti avai ae, ON 749 | OOS 7A eeeeeeee 
Endomeral/platesiso 3325 (fh 0.11 ONOGD | ates ore eee 020877080430) e222 eee 
Genus KELLOGGIA Carriker 
KELLOGGIA BREVIPES Carriker 
In this species we have another case parallel to that of Ornicholaz 
alienus, where the genus is apparently composed of a single species, 
which in turn is split up into quite a number of closely related sub- 
species, all found on the different species of the avian genus Tinamus, 
the same as Ornicholax. 
I have before me a series of Kelloggia brevipes taken on the follow- 
ing hosts: Z¢mamus major castaneiceps (the type) ; 7. major percautus, 
I. m. latifrons, T. serratus serratus, T. s. ruficeps, T. tao tao, and 
I’. t. weddelli. A casual examination of these specimens might lead 
one to believe that they all represent a single form, but a more careful 
study reveals an astonishing number of small but constant differences 
between most of them. There are two reliable indices that may be used 
for their separation into subspecies—the male genital armature and 
the shape of the preantennal portion of the head. | 
