586 
nearer  to  the  ground  than  Ciilex,  nor  do  they  collect  together  in  such 
laro-e  numbers.  Their  flight  is  also  much  slower.  The  aerial  dances  of 
the  males  of  Grabharuin  loillcocksii  are  again  different.  They 
api>ear  almost  invariably  to  take  place  close  to  bushes,  under  trees  or 
sheds  ;  the  males  lly  backwards  and  forwards  with  a  slow  and  easy 
flight,  about  three  feet  from  the  ground,  columns  not  being  formed. 
One  rather  striking  fact  concerning  these  aerial  dances  is  the 
com}3aratively  small  numbers  of  females  which  join  them  in  order  to 
pair  with  the  males. 
The  mosquito  conditions  on  the  Gizeh  side  (west  bank)  of  the 
N'ile  were  the  same  as  those  wTich  prevailed  on  Ghezireh  both  in  igo8 
and  1909.  Cellia  pharoensis,  G rabhaviia  loillcocksii  and  Culex,  .spp. 
were  found  in  numbers,  breeding  in  borrow-pits,  flooded  building-land, 
gardens  and  agricultural  land.  Many  of  these  breeding  places  were 
located  close  to  native  villages,  or  to  houses  occupied  by  both 
Europeans  and  natives. 
With  regard  to  the  City  of  Cairo,  which  is  situated  on  the  east 
bank  of  the  river,  one  expected  to  find  Culicids  breeding  in  large 
numbers,  but  it  w'as  somewhat  of  a  surprise,  to  find  C.  pharoensis 
breeding  in  the  heart  of  a  thickly  populated  native  quarter  of  the  city. 
At  the  end  of  November,  1908,  a  number  of  larvae  were  taken  in  a 
disused  pit  (water-level  about  3  feet  from  the  surface,  and  well  lighted) 
in  a  garden  in  the  Boulac  district  of  Cairo.  In  November  of  this  year 
(1909),  this  species  w^as  again  found  in  the  same  garden,  not  in  the 
sakia  pit,  but  in  a  small  pool  of  infiltration  water. 
On  two  occasions  the  writer  has  caught  adult  Cellia  pharoensis  in 
the  Turf  Club,  Cairo.  'Fhis  building  is  situated  too  far  a\vay  to  be 
invaded  by  Anophelines  from  any  of  their  known  breeding  places  ; 
the  inference  is  therefore,  that  Cellia  breed  in  other  parts  of  Cairo. 
In  November  of  this  year  the  waiter  obtained  several  records  of 
the  occurrence  of  Cellia  (adults)  in  Cairo  on  the  authority  of  Dr. 
H.  E-  Ross  and  others,  and  recently  a  new  breeding-place  was  found 
in  the  Chubra  quarter  of  Cairo. 
Early  in  December,  1908,  a  new  Anopheline  was  discovered  in 
Cairo.  This  mosquito  belongs  to  the  genus  Pyretophorus,  and  thus 
falls  under  suspicion  as  a  possible  malaria  carrier.  In  a  subsequent 
paper  dealing  lully  with  the  mosquitoes  found  so  far  in  Cairo  and 
district  it  is  proposed  to  describe  this  species  under  the  name  ol 
Pyretophorus  clcopairae. 
