8 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 00. 



TRIGONA HEIDERI Friese. 



Manaos, Brazil (Miss H. B. Merrill). 



TRIGONA LONGIPES Smith. 



Manaos, Brazil (Miss H. B. Merrill.) 



TRIGONA WILLIANA Friese. 



British Guiana, May 21. 1901 (R. J. Crew); Rio Mato, Caura 

 district, Venezuela, October, 1909 (M. A. Carriker). One Rio Mat:o 

 specimen bears an additional label : " Taken on trunk of a tree in 

 forest on some o;um, wliere there were many dead ones, covered with 

 white mould." 



TRIGONA PECTORALIS DalSa Torre. 



San Salvador (S. Calderon). 



TRIGONA MELOCOLOR Packard. 



Lagunita de Area, Venezuela, 2,000 feet (M. A. Carriker). Be- 

 longs to subgenus Oxytrigonn Cockerell. 



TRIGONA CUPIRA Smith. 



C. Bolivar, Venezuela, on Convol/vulus (M. A. Carriker). 



TRIGONA RUFICRUS CORVINA Cockerel!. 



Four workers from banana flowers, Punta de Pena, Panama, xVu- 

 gust 6, 1906 (R. E. B. McKenney).^ 



TRIGONA PALLIDA Latreille. 



La Chorrera, Panama, April 12, 1912 (Busck). I found what is 

 presumably Latreille's type in the Museum at Oxford. It is much 

 broken, with no head. Thorax, abdomen, and hind legs light rufo- 

 testaceous. No doubt the species which I have known as pallida. 

 The specimen is labeled in Latreille's writing. 



TRIGONA MEADE-WALDOI Cockerell. 



Joazeine, Bahia, Brazil, August 5, 1915 (P. G. Russell). 



TRIGONA SEVOCANS, new species. 



Wo7']v€r. — Length about 7 mm., anterior T mm.; clear yellowish- 

 fulvous, with the head mainly black, a large rounded black or piceous 

 patch on lower part of mesopleura, mesothorax black with the an- 

 terior corners broadly and lateral margins narrowly yelloAV ; broad 



5 In the Oxford Museum I found T. ruflcrus (Apis ruflcnis Latreille), labeled in La- 

 treille's writing. I noted : Wings fuliginous, paler apically ; hair on head and thorax 

 above black ; hind tibiae and tarsi red ; sides of face gray-pruinose ; cheeks pale gray- 

 pollinose ; mesothorax shining ; robust species. This is the species generally known 

 under this name. 



