﻿488 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.98 
  

  

  Wliat 
  appears 
  to 
  be 
  a 
  variety 
  of 
  the 
  male 
  (var. 
  adani, 
  new 
  variety) 
  

   differs 
  by 
  having 
  yellow 
  hair 
  at 
  middle 
  of 
  base 
  of 
  second 
  tergite 
  and 
  

   entire 
  yellow 
  bands 
  on 
  third 
  and 
  fourth. 
  It 
  was 
  taken 
  at 
  Zamorano, 
  

   December 
  17 
  (Adan 
  Rivera). 
  It 
  runs 
  to 
  B. 
  mexicanus 
  in 
  Franklin's 
  

   table. 
  

  

  Type.— 
  U.S.N. 
  M. 
  No. 
  58899. 
  

  

  Two 
  workers 
  were 
  taken 
  on 
  Uyaca 
  Mountain, 
  February 
  9, 
  above 
  

   5,000 
  feet 
  (W. 
  P. 
  Cockerell). 
  

  

  BOMBUS 
  MEDIUS 
  Cresson 
  

  

  Similar 
  to 
  B. 
  mexicanus, 
  with 
  black 
  pubescence 
  and 
  a 
  yellow 
  band 
  

   on 
  third 
  abdominal 
  tergite, 
  but 
  thorax 
  above 
  yellow 
  in 
  front 
  of 
  and 
  

   behind 
  the 
  exceedingly 
  broad 
  interalar 
  band. 
  

  

  Honduras: 
  Common 
  at 
  Zamorano. 
  A 
  male 
  was 
  taken 
  at 
  Agua 
  

   Amarilla, 
  December 
  15. 
  Uyaca 
  Peak, 
  about 
  6,000 
  feet, 
  December 
  14, 
  

   at 
  flowers 
  of 
  Salvia 
  lavanduloides 
  (Vladimir 
  Castillanos). 
  

  

  This 
  was 
  described 
  from 
  Utah, 
  where 
  it 
  does 
  not 
  occur. 
  

  

  Probably 
  this 
  species 
  should 
  be 
  called 
  B. 
  cajennensis 
  Fabricius. 
  

   Franklin 
  says 
  it 
  is 
  impossible 
  to 
  tell 
  from 
  the 
  description 
  whether 
  

   Fabricius 
  had 
  B. 
  medius 
  or 
  B. 
  incarum 
  Franklin. 
  Both 
  are 
  found 
  at 
  

   Boquete, 
  Chiriqui. 
  B. 
  incarum 
  was 
  described 
  primarily 
  from 
  Peru, 
  

   but 
  Franklin 
  saw 
  specimens 
  from 
  British 
  Guiana 
  and 
  Surinam. 
  

   Franldin 
  cites 
  10 
  references 
  to 
  B. 
  cajennensis, 
  which 
  he 
  thinks 
  may 
  

   really 
  represent 
  B. 
  incarum. 
  It 
  thus 
  seems 
  impossible 
  to 
  reach 
  a 
  

   definite 
  decision. 
  

  

  BOMBUS 
  NIGER 
  Franklin 
  

  

  Uyaca 
  Mountain, 
  workers 
  only. 
  One 
  specimen 
  has 
  white 
  hair 
  on 
  

   the 
  penultimate 
  tergite. 
  It 
  was 
  collected 
  February 
  9 
  at 
  over 
  5,000 
  

   feet 
  (W. 
  P. 
  Cockerell). 
  I 
  cannot 
  believe 
  it 
  is 
  a 
  distinct 
  species. 
  It 
  

   may 
  be 
  designated 
  variety 
  a. 
  

  

  A 
  single 
  specimen 
  of 
  B. 
  niger 
  was 
  taken 
  at 
  Zamorano, 
  December 
  14 
  

   (Cisneros) 
  , 
  

  

  Genus 
  TRIGONA 
  Jurine 
  

  

  TRIGONA 
  (TRIGONA) 
  FULVIVENTRIS 
  Gufirin 
  

  

  Mesonotum 
  shining; 
  abdomen 
  red. 
  

   Honduras: 
  Common 
  at 
  Zamorano. 
  

  

  TRIGONA 
  (TRIGONA) 
  SILVESTRIANA 
  Vachal 
  

  

  Honduras: 
  Agua 
  Azul, 
  at 
  flowers 
  of 
  Mimosa, 
  December 
  27 
  (Rua 
  

   Williams); 
  Zamorano 
  (Pelen); 
  Rio 
  Lindo, 
  December 
  21 
  (Rua 
  Wil- 
  

   liams) 
  . 
  

  

  A 
  comparatively 
  large 
  species, 
  with 
  very 
  black 
  wings. 
  The 
  speci- 
  

   mens 
  of 
  Trigona 
  received 
  from 
  the 
  U. 
  S. 
  National 
  Museum, 
  with 
  names 
  

   at 
  least 
  largely 
  based 
  on 
  the 
  work 
  of 
  Schwarz, 
  are 
  placed 
  in 
  various 
  

  

  