*	nephridia
act	acrotroch
acz	anterior ciliary field
adz	adoral cilary zone
avc	anterior ventral cilia
c	commissure
co	copulative organ
dc	dorsal commissure
dc	dorsal cilia
dn	dorsal nerve
arrowheads	indicate neuronal cell bodies
E10, 11	multiciliated cells of the dorsal ciliary field
gl	gland cell
go	genital opening
mt	metatroch
pvc	posterior ventral cilia
sgd	stylet gland cell
sn1–sn23	sensory neurons 1–23
sv	seminal vesicles
test	testis
vb	ventral bundle
vc	ventral commissure