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SMITHSONIAN    MISCELLANEOUS    COLLECTIONS  VOL.   96 
On  the  other  hand,  a  typical  epiphaUic  sclerotization  is  not  present 
in  Stenopelmatus,  but  a  pair  of  long  transverse  sclerites  (B,  />)  are 
seated  on  the  upper  lip  of  the  dorsal  phallic  sac,  and  curve  laterally 
and  ventrally  in  the  outer  walls  of  the  phallus.  These  sclerites 
are  present  in  the  Gryllidae  as  lateral  arms  of  the  epiphallus  (fig. 
32B,/»). 
The  nymphal  phallus  of  Stenopelmatus  (fig.  31  F,  G,  H)  much 
resembles  that  of  Cyphoderris  (fig.  21,  G,  H,  I) .  It  is  a  flattened  struc- 
ture with  an  undivided  basal  part,  presenting  distally  a  broad  dorsal 
lobe  (fig.  31  F,  G,  dl),  a  pair  of  tapering  lateral  lobes  (//),  and  a  wide, 
Dej"     ^£   11-     vl^ 
Fig.  31. — Tettigonioidea-Stenopelmatidae :  external  male  genitalia  of  Stciio- 
pchnatiis  fusctis  Haldeman. 
A,  end  of  abdomen,  dorsal  view.  B,  mature  phallus,  dorsal  view.  C,  same, 
ventral  view.  D,  same,  median  section.  E,  ejaculatory  duct  and  ampullae  of 
nymph.    F,  G,  H,  immature  phallus,  dorsal,  posterior,  and  ventral  views. 
For  letter  explanation,  see  fig.  30. 
medially  subdivided  ventral  lobe  (H,  vl).  The  dorsal  lobe  shows  on 
its  upper  surface  a  slight  but  distinct  median  depression  (F,  G,  dc), 
which  is  the  beginning  of  the  dorsal  cavity.  In  the  mature  phallus  the 
dorsal  cavity  becomes  a  small  pocket  (D,  dc)  between  the  extended 
anterior  margin  of  the  dorsal  lobe  (D,  e,  cf.  F,  e)  and  the  retracted 
posterior  margin  (g).  The  lateral  lobes  of  the  mature  organ  are  large, 
soft,  folded  structures  (B,  C,  D,  //),  suggestive  that  they  serve  to  hold 
the  body  of  a  spermatophore.  The  ventral  lobe  (C,  vl)  is  flat  and 
subdivided  into  four  parts.  The  small  endophallic  cavity  (D,  Enph) 
is  directly  continuous  with  the  ejaculatory  duct  (Dej).  In  a  late 
nymphal  stage  the  short  ejaculatory  duct  is  surmounted  by  two  small 
