14  SMITHSONIAN    MISCELLANEOUS    COLLECTIONS  VOL.    96 
glands  of  the  female  of  Archotervwpsis,  as  shown  by  Imms  (fig. 
3  G),  consist  of  two  groups  of  long  tubules  arising  from  short  lateral 
branches  of  a  large  common  outlet  duct  opening  on  the  venter  of 
the  ninth  abdominal  segment. 
External  genitalia  appear  to  be  nonexistent  in  male  termites,  and 
nothing  has  been  recorded  concerning  the  manner  of  sperm  transfer. 
A  complete  ovipositor  consisting  of  three  pairs  of  small  valvulae  is 
present  in  Mastoternies  danmnensis  (see  Crampton,  1920,  1923,  and 
Browman,  1935),  which  closely  resembles  the  ovipositor  of  nymphal 
blattids,  except  for  the  absence  of  styli  on  the  third  valvulae.  In 
various  other  species  apparent  rudiments  of  first  valvulae  have  been 
observed,  but  the  valvulae  of  the  ninth  segment  have  been  completely 
lost. 
There  is  little  ground  for  disputing  the  currently  accepted  view 
that  the  termites  are  closely  related  to  the  roaches  and  mantids,  but 
the  idea  often  expressed  or  implied  that  these  three  groups  of  insects 
are  separated  from  other  Orthoptera  by  having  the  female  genital 
opening  between  the  seventh  and  eighth  abdominal  segments  clearly 
arises  from  an  error  of  anatomical  interpretation  (see  Snodgrass, 
1933,  p.  76).  In  the  Isoptera  the  eighth  abdominal  sternum  of  the 
female,  as  shown  by  Imms  (fig.  3  F,  VII IS),  is  concealed  above  the 
extended  seventh  sternum  (VIIS),  as  it  is  in  the  blattids  and  mantids, 
in  which  the  eighth  sternum  is  much  reduced.  In  all  cases,  however, 
the  opening  of  the  oviduct  in  the  adult  is  morphologically  behind 
the  eighth  sternum,  since  it  is  either  on  the  reflected  dorsal  surface  of 
the  sternum  (F,  Od),  or  on  a  fold  or  lobe  above  the  sternal  rudiment. 
If,  therefore,  it  is  found  that  in  a  young  termite  nymph  the  median 
oviduct  arises  between  the  seventh  and  eighth  abdominal  sterna,  such 
a  condition  would  be  but  a  recapitulatory  stage  of  development 
common  to  various  insects,  including  Orthoptera. 
III.   EMBIOPTERA 
The  Embiidae,  in  the  structure  of  the  internal  reproductive  organs 
of  the  male,  resemble  the  Orthoptera,  and  have  no  characteristic 
feature  of  the  Plecoptera.  The  male  organs  have  been  studied  in 
three  species,  namely,  Haploetnbia  solieri,  described  by  Grassi  and 
Sandias  (1897- '98),  Enibia  minor  by  Mukerji  (1928),  and  Embia 
major,  illustrated  in  the  present  paper.  The  testes  are  soft  elongate 
bodies  (fig.  4  A,  Tes)  situated  laterally  in  the  anterior  part  of  the 
abdomen.  Each  testis  is  composed  of  a  large  number  of  small  vesicu- 
lar bodies  opening  separately  into  the  anterior  part  of  the  vas  deferens. 
