14 
PACIFIC SCIENCE, Vol. VIII, January, 1954 
turn five-sided, the posterior sides more or 
less straight and forming a right angle with 
each other. Coxal setae 1-1-1. Sternal setae 
2-2. Several setae between coxae II and III, 
Humeral setae variable, three to five pairs. 
Scutal measurements of a mean of 17 spec- 
imens (given by the describer): "AW-37.5, 
PW-54.1, SB-32.8, ASB-21.8, PSB-57.8, AP- 
37.6, AL-27.3, PL-26.8, S-33.5.” Scutal meas- 
urements of a south Korean specimen: AW- 
44, PW-50, SB-35, ASB-26, PSB-49, AP-45, 
AL-37, PL-35, S-34. 
DISTRIBUTION AND HOSTS: Originally 
known only from Ulu Langat Forest Reserve, 
Selangor, from Rattus bowersi. Known in 
southern Korea from an area 9 miles south- 
east of Chorwon, Seoul, and in Chipori from 
Microtus sp. and Apodemus agrarius. 
TYPE DATA: From Rattus bowersi, Ulu Langat 
Forest Reserve, Selangor, Federated Malay 
States; June 13, 1950. 
COMMENT: The designation of ventralis as 
a variety is unfortunate, as it is probably 
either a distinct species or a variation of geo- 
graphic significance. If the coxal setal con- 
dition in brennani is as variable as in Gahrliepia 
saduski, it is of no remarkable significance. 
Euschongastia ikaoensis 
(Sasa et aL, 1951) 
Neoschongastia ikaoensis Sasa, Sawada, Kano, 
Hayashi, and Kumada, 1951. Tokyo Iji 
Shinshi 26 (4): 8. 
DIAGNOSIS: All palpal setae feathered. Pal- 
pal claw five-pronged. Galeal seta nude. Coxal 
setae 1-1-1. Sternal setae 2-2. Scutum about 
2.5 times as wide as long. Sensillae pyriform. 
Two pairs of humeral setae. Scutal measure- 
ments of holotype: AW-61.5, PWt 67, SB-24, 
ASB-18, PSB-15.5, AP-21, AM-30, AL-30, 
PL-39, S-33. Scutal measurements of a spec- 
imen from southern Korea: AW-62, PW-78, 
SB-28, ASB-22, PSB-15, AP-20, AM-28, AL- 
22, PL-39, sensillae missing. 
DISTRIBUTION AND HOSTS: Known origin- 
ally only from Japan from Apodemus speciosus. 
In Korea this was taken 17 miles southeast 
of .Chorwon from Apodemus agrarius. 
TYPE DATA: Holotype from Apodemus speci- 
osus. Gumma Prefecture, Japan. Deposited at 
the Institute for Infectious Diseases, Univer- 
sity of Tokyo. 
Euschongastia koreaensis n. sp. 
Fig. 2 
DESCRIPTION: Gnathosoma: All palpal setae 
feathered; palpal claw five-pronged. Galeal 
seta feathered. Cheliceral base and palpal 
femur with scattered light punctae. Chelicera 
with a subapical tooth or notch. Scutum: 2.5- 
3.0 times as wide as long; with a few light 
punctae. Sensillary bases behind a line con- 
necting the posterolateral setae. Sensillae py- 
riform. Scutal measurements of holotype: 
AW-69, PW-86, SB-29, ASB-27, PSB-10, 
AP-17, AM-35, AL-45, PL-67, S-35. Legs: 
Coxal setae 1-1-1; seta on coxa III arising 
from the rear edge of the sclerotized part of 
the anterior margin of the coxa. Specialized 
(nude) setae as follows: Leg I, 2 genualae, 
1 microgenuala, 2 tibialae, 1 microtibiala, 1 
spur, 1 microspur, 1 subterminala, 1 para- 
subterminala, 1 pretarsala; Leg II, 1 genuala, 
2 tibialae, 1 spur, 1 microspur, 1 pretarsala; 
Leg III, 1 genuala, 1 tibiala. Setae: Sternal 
setae 2-2-. About 40 ventral setae behind coxa 
III, similar in character to sternal setae. Dorsal 
setae similar to scutal setae; dorsal setal form- 
mula: 2-12-12-12-6-6. 
TYPE: Holotype from Rattus rattus, 17 miles 
southeast of Chorwon; November 15, 1951. 
Deposited in the U. S. National Museum. 
Paratypes from Rattus norvegicus, 1 miles south- 
east of Chorwon, and from Apodemus agrarius, 
4 miles east of Inchon, 
Trombicula (Leptotrombidium) palpalis 
Nagayo et aL, 1919 
Trombicula palpalis Nagayo, Mitamura, and 
Tamiya, 1919. Jikken Igaku Zasshi 3(4): 
265-312. 
