466 
ochreous,  hairs  black ;  tuberculate  spot,  black,  shining,  especially  on 
the  lower  half ;  with  a  very  fine  (almost  obscure)  black  hair-line 
extending  towards  the  vertex ;  the  latter  with  a  median  blackish 
suffused  spot.  Eyes,  in  life,  coppery  brown  with  bronzy  and  golden 
reflections  ;  and  a  faint  narrow  bronzy  green  band  below  the  centre. 
Antennae  reddish  yellow,  annulations  on  third  segment  intensely 
black ;  hairs  on  first  segment  mixed  black  and  white,  the  former 
forming  a  black  tuft  dorsally  ;  second  segment  frmg-ed  apically  with 
black  hairs  ;  third  with  five  to  six  scattered  black  hairs  on  dorsal 
surface  of  the  swollen  basal  portion.  Thorax,  dark  smoky  grey,  with 
two  broad  but  almost  obscure  darker  stripes.  Abdomen  pale  smoky 
brown,  gradually  darkening  apically ;  hairs  mixed  black  and  white  ; 
apical  margins  narrow  and  paler.  Legs  a  little  darker  than  the 
antennae ;  anterior  femora,  blacki,sh  dorsally  for  nearly  their  whole 
length ;  the  tibiae,  apically  blackish  all  round  ;  middle  and  hind  pairs 
similar,  but  the  black  is  less  intense  ;  tarsi,  blackish  apically,  terminal 
segments  entirely  so. 
Closely  allied  to  Aty lotus  completus,  but  is  distinguished  by  its 
smaller  size,  and  the  absence  of  any  abdominal  markings.  It  belongs  to 
the  same  group  which  includes  also  A.  tritus.  Walk.  Two  females  only 
of  this  small  Tabanid  were  captured  by  the  writer  while  in  a  boat  off 
Port  Royal,  Kingston,  Jamaica,  December  ist,  1908.  The  first  was 
taken  shortly  after  leaving  one  of  the  little  Cay  Islands,  the  other 
when  nearing  the  mainland  of  Jamaica.  Both  examples  made 
repeated  attacks  on  the  naked  feet  and  legs  of  the  writer’s  companions, 
and  one  was  eventually  captured  while  in  the  act  of  sucking  blood. 
When  disturbed  they  disappeared  mysteriously  into  the  inaccessible 
portions  of  the  boat,  re-appearing  after  a  lengthened  absence. 
Though  a  careful  watch  was  kept,  no  other  examples  were  seen  either 
on  the  Cay  which  was  visited  of  on  the  main  Island.  It  is  remarkable, 
therefore,  that  the  species  should  be  met  with  at  sea  only. 
SMALL  DIPTEROUS  FLIES  INFESTING  MAN 
These  flies  resemble  Ceratopogon  in  habits,  i.e.,  flight  and  in  their 
persistent  habits  of  attacking  man.  All  the  specimens  were  captured 
by  arranging  half  a  dozen  native  boys  in  single  file  and  then  sweeping 
the  net  over  their  feet.  They  congregate  chiefly  round  the  toes ;  but 
