NO. 3558 MALLOPHAGA—ELBEL 39 
VIII lacks the internal triangular sclerite in B. deignani that is present 
in B. emersont. 
Material examined: 39 males and 28 females from fresh and dried 
material collected in the Oriental region. 
Type host: Anorrhinus g. galeritus (Temminck, 1831). 
Type material: Holotype male from CNHM skin from Kinabatan- 
gan, North Borneo, May 18, 1950, collected by D. D. Davis, REE 
in CNHM. Paratypes: 2 males with same data. Additional types 
from Anorrhinus g. carinatus (Blyth, 1845): Allotype female from 
USNM skins from Trang, Thailand, 1896 and 1899, collected by W. 
L. Abbott, REE in USNM. Paratypes: 1 male and 1 female with 
same data; 27 males and 18 females from Lamo and Chong, Muang, 
Trang, Thailand, March 19638, collected by Wichit Suwan Laong, 
USNM; 8 males and 7 females from Na Wong, Ban Na, Muang, 
Phatthalung, Thailand, Mar. 6, 1963, collected by Wichit Suwan 
Laong, USNM: 1 female from BL skin from Khao Phap Pha Mt., 
Ban Na, Muang, Phatthalung, Thailand, Sept. 4, 1954, collected by 
B. Lekagul, REE. 
Bucerocolpocephalum deignani is named for Mr. H. G. Deignan, 
Division of Birds, U.S. National Museum, in appreciation for the 
fresh material he collected in Thailand, for supplying identifications 
and information on hosts, and for permission to examine hornbill 
skins for Mallophaga in the USNM. 
Genus Bucerophagus Bedford 
Figures 66-69 
Bucerophagus Bedford, 1929, p. 509, figs. 11, 12. [Genotype: Bucerophagus 
africanus Bedford, 1929.] 
Antimenopon Eichler, 1947, p. 3, figs. 3-5. [Genotype: Menopon forcipatum 
Nitzsch, 1874.] 
Head triangular, width 1% to 1% times that of length. Forehead 
narrower anteriorly. Temples expanded. Antenna 4-jointed, third 
segment constricted at base, and terminal segment capitate with 
definite signs of division into two parts, either by transverse line or 
marginal indentation. Antennary fossa deep, covered above by ex- 
pansion of lateral margin of head, posterior margin of which bears eye 
with double cornea. Dorsal-lateral margin of forehead anterior to 
eye with shallow notch, Gular region with 2-8 setae varying in length 
on each lateral margin. Pronotum expanded anteriorly with posterior 
marginal row of long setae. Metanotum expanded posteriorly with 
posterior marginal row of long setae and 2-5 short setae on each lateral 
margin. Metanotum separated from mesonotum and from pleurites. 
The sclerotized median button behind the prothorax (fig. 25m) is a 
