_amg._ Accessory Malpighian body. _cav._ Cardinal vein. _ge._ Germinal
epithelium. _k._ True kidney. _l.c._ Longitudinal canal of the Wolffian
body connected with vasa efferentia. _mg._ Malpighian body. _nt._ Network
and central canal at the base of the testis. _o._ External aperture of
urinal cloaca. _od._ Oviduct or Müllerian duct of the female. _od´._
Müllerian duct of the male. _ou._ Openings of ureters in Wolffian duct in
the female (fig. 3). _pmg._ Primary Malpighian body. _px._ Growth from
vesicle at the end of a segmental tube to join the collecting tube of the
preceding segment. _rst._ Rudimentary segmental tube. _ru._ Ureter
commencing to be formed. _sb._ Seminal bladder. _sd._ Segmental duct. _st._
Segmental tube. _sto._ Opening of segmental tube into body-cavity. _sur._
Suprarenal body. _t._ Testis. _u._ Ureters. _ve._ Vas efferens. _wb._
Wolffian body. _wd._ Wolffian duct.