26 
Siphonophora Rosarum 
Vickery, R. A. (1908). A Comparative Study of the External Anatomy of Plant 
Lice. Twelfth Report of State Entomologist of Minnesota, p. 178. 
Witlaczil, E. (1882). Zur Anatomie der Aphiden. Arbeit, a. d. Zool. Inst. Wien, 
Vol. iv. p. 397. 3 plates. 
Witlaczil, E. (1886). Zur Morphologie und Anatomie der Coeciden. Zeitschr. f. 
wiss. Zool. xliii. pp. 139—174, pi. v. 
REFERENCE LETTERING. 
abd. g. 
ams. v. 
an. 
ant. lat. r. 
b. se. 
bk. 
c. g. 
eh. 
ch. r. 
cir. oes. conn, 
circ. mus. 
crp. 
d. br. 
d. conn. 
e. 
el. m. 
emb. 
epi. 
fb. 
gr. 
j- 
l. pr. m. 
Ibr. 
Ivn. 
long. mus. 
to. pli. 
mus. 
n. abd. 
n. ant. 
n. Ig. 1, 2, 3. 
n. mus. 
n. vise, 
nu. 
nu. b. 
oes. 
op. 1. 
ov. d. 
Median abdominal ganglion. 
Arms of the inverted V. 
Anus. 
Anterior lateral rod. 
Bases of the setae. 
Beak or proboscis. 
Cerebral ganglion. 
Chitin. 
Chitinous rods attached to the lower parts (j) of the arms of the A, and 
joined to the bases of the setae. 
Cireum-oesophageal connectives. 
Circular muscle fibres. 
Crop. 
Dorsal branch of trachea. 
Dorsal connecting trachea. 
Eye. 
Muscles stretched between the transverse bar and the roof of the head and 
which serve to lift up the transverse bar after some displacement. 
Embryo. 
Epidermis. 
Fat body. 
Granules. 
Jointed lower parts of the arms of the A. 
Large protractor muscle. 
Labrum. 
Labium. 
Longitudinal muscle fibres. 
Muscles for dilating the pharynx. 
Muscles. 
Abdominal nerve. 
Nerves to the antenna. 
Nerve to the eye. 
Nerve to the 1st, 2nd and 3rd legs. 
Nerve to muscles controlling mouth organs. 
Nerve to the viscera. 
Nuclei. 
Nuclear bodies. 
Oesophagus. 
Optic lobe. 
Oviduct. 
