EXPLANATION OF PLATES. 
Zeiss microscope, apochromatic objectives, compensating oculars, and camera 
lucida used where possible. 
Abbreviations. 
A. Anterior. 
art. Articulation. 
br. Brain. 
cl. div. can. al. Cell of diverticulum 
of alimentary canal. 
cl. hep. Digestive cell. 
clo. Cloaca. 
da. Cuticula. 
da'. New cuticula. 
D. Dorsal. 
d. sub-med. por. pi. Dorso-submedian 
porose plate. 
div. can. al. Diverticulum of alimen¬ 
tary canal. 
la, lb, lc , Id, 2a, 2b, 2c, 2d, 3a, 3b, 3c, 
3d. Diverticula numbered from 
right to left. 
gen. pas. Genital passage. 
gen. por. Genital pore. 
gl. Gland. 
hy. Hypodermis. 
hyp. Hypostome. 
lu. Lumen. 
lu. oa. Lumen of ovary. 
md. dig. Digit of mandible. 
md. s. Left mandible. 
md. sh. Mandibular sheath. 
mu. Muscle fiber, 
n. Nerve. 
oa. Ovary. 
oa. dx. Right side of ovary. 
oes. Esophagus. 
or. haus. Opening in skin of host 
made by beak of parasite. 
ov. Ovum. 
ovd't. Oviduct. 
pal. Palpus. 
pal. s. Left palp. 
pe. Penis. 
por. ar. Porose area. 
rec. sem. Receptaculum seminis. 
ren. con. Renal concretions in Mal¬ 
pighian tubules. 
ren. sac. Renal sac. 
sal. dt. Salivary duct. 
sal. gl. Salivary gland. 
sem. ves. Seminal vesicle. 
set. Seta. 
sh, gl. Shell gland. 
stig. Stigma. 
te. dx. Testis, right. 
te. s. Testis, left. 
tr. Tracheal tube. 
tu. mal. d. Malpighian tubule, dorsal 
portion. 
tu. mal. v. Malpighian tubule, ventral 
portion. 
ut. Uterus. 
va. df. Yas deferens. 
ves. sem. Seminal vesicles. 
