123 
part  of  the  femora,  starting  from  the  base. 
Antennal  groove  and  front  soot  colored  ; 
ocellar  tubercule  shining  black.  In  scutum 
and  scutellum,  the  ground  is  yellowish 
chestnut  or  reddish  brown  and  covered 
with  short  and  scarce  hairs.  Dorsum  of 
abdomen  either  black  or  covered  with  reddish 
yellow  hairs.  Ground  of  legs  almost  black. 
Wings  blackish  with  ferrugineous  base.  The 
frontal  calli  can  be  seen  in  PI.  9,  fig.  4. 
Total  lenght  of  the  somewhat  bent  body 
20,  that  of  the  wing  17  mm.  It  corresponds 
to  the  largest  specimens  of  apicalis  but  is  a 
little  stouter. 
The  only  specimen  was  caught  in  Pe- 
tropolis  on  November  the  4th,  1909,  by  Mr. 
J.  G.  FOETTERLE. 
C.  infulata  is  intermediate  between  api¬ 
calis  and  Schmalzi,  a  good  deal  smaller  than 
the  latter  but  like  it  in  general  appearance 
and  colour  of  the  tomenturn. 
5.  Cuterebra  nigricans  n.  sp. 
(PI.  27  fig.  2;  pi.  29  fig.  2  (face)  ) 
At  first  sight,  this  species  is  very  like 
apicalis ,  but  a  careful  examination  reveals  dif¬ 
ferences.  As  it  has  been  oMained  only  once 
(by  raising)  it  is  probably  rare  and  not  wide¬ 
ly  spread.  For  these  reasons  I  do  not  consi¬ 
der  it  identical  with  cayennensis ,  especially  as 
the  legs  are  not  really  black.  From  apicalis 
it  differs  in  the  following  way;  The  front  is 
reddish  brown,  the  ocellar  tubercule  and  callo¬ 
sities  black,  the  latter  very  different  from 
those  of  apicalis  (v.  fig.  1,1a  &  2).  Scutum 
and  scutellum  black,  with  sooty  hairs  ;  only 
on  the  anterior  border  of  the  scutum  there 
are  silky  yellow  hairs,  forming  a  crescent 
while  on  its  sides  two  lateral  striae  ot  si¬ 
milar  hairs  are  seen;  these  join  at  the  end 
of  the  scutellum.  Upper  and  under  side 
of  the  abdomen  like  those  of  apicalis.  Legs 
dark  chestnut  red  with  black  hairs;  under 
side  of  the  femora  lighter.  Wings  transhicid, 
but  much  darker  than  in  the  male  of  api¬ 
calis  ;  alulae  nearly  black.  Abdomen  very  flat 
on  top;  on  the  scutum  three  faint  striae  of 
darker  colour.  Length  of  body  21-22  mm.; 
length  of  wing  17  mm. 
The  only  specimen  was  reared  in  Porto 
Martins,  State  of  S.  Paulo,  from  a  larva  found 
on  a  native  rat.  It  was  dated  31.  III.  OS. 
The  empty  puparium  is  like  that  of  C.  api¬ 
calis  but  very  much  darker. 
6.  Cuterebra  sarcophagoides  n.  sp. 
(PI.  27,  fig.  5;  29,  fig.  5  (face).) 
This  species  was  named  sarcophagoides 
because  both  colour  and  markings  remind  one 
of  Sarcophaga ;  this  likeness  is  particularly  stri¬ 
king  in  fresh  specimens,  though  they  are 
much  bulkier  than  even  the  largest  Sarcopha- 
gae.  C.  sarcophagoides  is  smaller  than  the 
other  species  of  Cuterebra,  but  rather  stout; 
this,  and  the  broad  tarsi  produce  a  clumsy 
appearance.  The  ventral  side  is  greyish 
white;  this  color  reaches  the  upper  margin 
of  the  antennal  pit,  and  extends  over  the 
pleura  and  even  the  dorsum  abdominis, 
where  it  takes  the  form  of  broad  basal 
bands,  with  wide  interruptions  on  the  first 
ring  and  narrower  and  fainter  ones  in  the 
next  segments. 
Ground  of  antennal  pit,  dusted  with  grey, 
borders,  black  in  varying  extension.  Frons 
grey  ;  ocellar  callus,  in  shape  of  an  acute 
triangle,  reddish  in  front,  biack  behind;  facial 
calli  black;  upper  ones  without  a  sheen. 
Scutum  and  scutellum  grey  turning  to  reddish, 
with  central  reddish-brown  stria  and  four 
fainter  and  interrupted  striae  on  each  side  ; 
the  external  follows  the  margin.  They  look 
reddish  or  blackish,  according  to  the  incidence 
of  the  light.  Legs  chestnut  red;  on  the  apex 
of  tibiae  and  tarsi  the  ha  irlets  are  black,  on 
the  rest  of  the  tibiae  and  on  the  femora  whi¬ 
tish.  Wings  translucid,  sepia  brown  ;  apex 
and  anterior  margin  darker,  base  and 
veins  more  reddish;  alulae  sepia  brown: 
thoracic  squamae  lighter  with  pale  edge. 
Both  specimens,  probably  males,  were 
caught  in  Jacutinga,  in  the  northwestern  part 
of  the  state  of  S.  Paulo,  at  the  end  of  April 
1907.  They  were  flying  round  the  trunk  of  a 
tree,  at  a  good  height  from  the  ground. 
