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SMITHSONIAN    MISCELLANEOUS    COLLECTIONS 
VOL. 
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Fig.  II. — Blattoidea:    male  and  female  genitalia  of  Blatta  orientalis  Linnaeus. 
A,  male  nymph,  22  mm  long,  internal  genitalia.  B,  same,  detail  of  testis, 
more  enlarged.  C,  adult  male,  internal  genitalia,  dorsal  view.  D,  small  tubules 
of  accessory  glands,  characteristic  appearance.  E,  same,  under  pressure.  F, 
adult  female,  floor  of  body  cavity  above  ovipositor,  showing  spermatheca  and 
accessory  glands.  G,  same,  external  aperture  of  spermatheca.  H,  section  of 
spermathophore  attached  to  papilla  of  spermatheca!  aperture  (from  Zabinski, 
1933  a)-  i>  spermatheca,  showing  ductules  in  glandular  wall  of  sperm-receiving 
tube.   J,  larger  tubules  of  male  accessory  glands,  same  enlargement  as  D  and  E, 
a,  smaller  tubules  of  accessory  glands  (utriculi  breviores)  ;  AcGld,  female 
accessory  gland;  AcGlds,  male  accessory  glands;  Amp,  mesodermal  ampullae 
of  nymphal  ejaculatory  duct;  b,  larger  tubules  of  accessory  glands  (utriculi 
majores)  ;  c,  d,  sclerites  of  dorsal  wall  of  female  genital  chamber;  Dej,  ductus 
ejaculatorius;  e,  inner  tube  of  smaller  accessory  gland  tubules;  /,  same,  ex- 
truded by  pressure;  mcl,  muscle  of  spermathecal  sclerite  (d)  ;  PhGld,  phallic 
gland;  Sphr,  spermatophore ;  Spr,  spermathecal  aperture;  Spt,  spermatheca; 
Spa,  spermatozoa ;  Tes,  testis ;  Vd,  vas  deferens ;  XINv,  cereal  nerve  of  eleventh 
abdominal  segment. 
