L. E. Eobinson and J. Davidson 
255 
m. lit. 
extrinsic muscles of heart. 
m. lit'. 
intrinsic muscles of heart. 
m. 1 . c. 
levator muscles of capitulum. 
m. 1 . int. cx. i and ii. 
lateral intercoxal muscles i and ii. 
in. mg. 
marginal dorso-ventral bodj'-museles. 
m. m. int. cx. i-iii. .. 
mesial intercoxal muscles i-iii. 
in. p. a. 
postero-accessory dorso-ventral body-muscles. 
m. p. m. ... 
postero-median dorso-ventral body-muscles. 
in. r. ch. ... 
retractor muscles of chelicerae. 
in. St. 
muscular sheath in wall of stomach. 
m. sub, cx. i. 
inferior subcoxal muscles. 
n. 1 . i. and ii. 
nerves of leg 1 and 2. 
0. cx. gl. ... 
orifice of duet of coxal gland. 
oes. 
oesophagus. 
0. gl. w. ... 
orifices of the different lobes of the white gland. 
o.ph. 
pharyngeal orifice. 
os. ht. 
ostium of heart. 
ov. 
ovary. 
pli. 
pharynx. 
sal. gl. 
salivary gland. 
s. ch. 
outer sheath of chelicera. 
s..ch'. 
inner sheath of chelicera. 
s. cx. f. 
supracoxal fold. 
sp. 
spiracle. 
s.pg. 
periganglionic sinus. 
s. r. 
rectal sac. 
St. 
stomach. 
sub. ch. p. 
subcheliceral plate. 
t. c. 
rectum. 
tes. 
testis. 
t. inpg. 
Malpighian tubule. 
tr. 
tracheae. 
tr'. 
tracheal anastomosis beneath central nervous system. 
lit. 
uterus. 
V. d. 
vas deferens. 
V. d. c. 
common canal of vasa deferentia. 
V. os. ht. ... 
valvular flap of ostium of heart. 
eeferences. 
Blanc, G. (1910). Sur la termination du tube digestive des Ixodidae. Bull. Soc. 
Zool. France^ xxxv, pp. 219-225, 7 text-figs. 
Bonnet, A. (1907). Recherches sur raiiatomie comparee et le developpenient des 
Ixodides. A?i7i. Univ. Lyon, N. Ser. I, Ease. 20, pp. 1-180, Pis. I-Vl. 
Christophers, S. R. (1906). The Anatomy and Histology of Ticks. 8ci. 
Memoirs by Officers of the Med. and Sanit. Dep’ts. of the Gov't, of India, 
Calcutta, N. S., No. 23, 55 pp.. Pis. I-VI, 8 text-figs. 
Heller, C. (1858). Zur Anatomie von Argas persicus. Sitzunysher. d. Kaiserl. 
AJead. Wien, xxx, Math.-Naturwiss. Klasse, pp. 297-32G, Pis. I-IV. 
