28 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
small scattered brushes of normal setae in C. boonsongi but large thick 
brushes of normal setae in C. hoplai. Abdominal sternite II of both 
sexes has fewer total setae in C. boonsongi than in corresponding sexes 
of C. hoplai. The male genitalia have endomeres with paired outer 
rims that are straight and nearly parallel in C. boonsongi but curved 
inwardly in C. hoplai. The female terminal abdominal tergite has 
on the posterior margin fewer than 22 setae of which approximately 
two-thirds are long and one-third are short in C. boonsongi but more 
than 24 setae of which approximately one-half are long and one-half 
are short in C. hoplav. 
Material examined: 5 males and 8 females from fresh and dried 
material collected in Thailand. 
Type host: Rhyticeros undulatus ticehurstt Deignan, 1941. 
Type material: Holotype male from USNM skin from Ban Hai 
Huai, Thailand, June 15, 19386, collected by H. G. Deignan, REE 
in USNM. Additional types from Rhyticeros u. undulatus (Shaw, 
1811): Allotype female from Khao Phap Pha Mt., Ban Na, Muang, 
Phatthalung, Thailand, Feb. 7, 1955, collected by Boonsong Lekagul, 
USNM. Paratypes: 3 males and 3 females with same data; 1 male 
from BL skin from Nong Ko, Siracha, Chon Buri, Thailand, August 
1953, collected by Boonsong Lekagul, REE; 4 females from Lamo, 
Muang, Trang, Thailand, Mar. 5, 1963, collected by Wichit Suwan 
Laong, USNM. 
Chapinia boonsongi is named for Dr. Boonsong Lekagul, Bangkok 
physician and naturalist, in appreciation for the fresh material he 
collected from Thailand and for permission to examine his hornbill 
skins for Mallophaga. 
Chapinia wenzeli, new species 
Fieures 15, 40, 41 
Both sexes are smaller than corresponding sexes of Chapinia tray- 
lori in all measurements except length of head in females (tables 1, 2). 
Male: Venter of third femora and posterolateral margins of abdom- 
inal sternites IV-VI each with small scattered brushes of normal 
setae which are not as numerous on abdominal sternite VI. Each 
lateral margin of abdominal tergites II-VI without a short seta 
between the spiracle and postspiracular seta. Abdominal sternite 
II with 30-36 total setae and one median row of setae on posterior 
margin. Terminal abdominal segments similar to those of C. boon- 
songi. Genitalia as shown in figure 15, endomeres with paired outer 
rims only, the posterolateral margins of which are split. 
Female: Resembles the male except that abdominal sternite II 
has 50-60 total setae. Terminal abdominal tergite with 12-14 long 
and 6-8 short setae on posterior margin; abdominal sternite VIII 
