72 PROCEEDINGS OF THE NATIONAL, MUSEUM vol. 68 



The pronotum is relatively small, much narrower than the head. 

 The wing membrane is plainly hairy and the cubital vein runs out 

 somewhat before the tip. 



The soldiers have the mandibles set well in from the lateral 

 margins of the head and the inner margins of the mandibles are 

 denticulate. 



The genus is well distributed throughout the world and contains 

 numerous species. 



Only one species, namely [E.] M. arboreus Emerson, was found 

 on the Mulford Expedition; houvieri Desneux, exiguus Hagen, and 

 strunckii Sorensen are other American species. The localities where 

 this termite was collected are: 



[EUTERMES] MICROCEROTERMES ARBOREUS Emerson 



Cachuela Esperanza (Beni River), Bolivia, March, 1922 (queen, 

 soldiers and workers) ; Rosario, Bolivia, November, 1921 (soldiers 

 and workers with N osutiterTiies {N.) aurantiacus Holmgren (queen, 

 soldiers and workers in tree nest) ; Rurrenabaque, Bolivia, October, 

 1921 (queen, soldiers and workers — 3 series) ; Rurrenabaque, Bo- 

 livia (No. 5, winged adults, queen, soldiers and workers) ; San 

 Gregorio, Beni, Bolivia, October, 1921 (queen, soldiers and workers) ; 

 St. Helena, Bolivia (soldiers and workers). 



LIST OF KNOWN AND NEW SPECIES OP TERMITES COLLECTED BY THE MDLFOHD EXPEDITION TO 

 BRAZIL AND BOLIVIA, 1921—1922 



BRAZIL 



KALOTERMITIDAE (0) 

 RHINOTEEMITIDAE (1) 



Described species Number \ 



Rhinotermes taurtis Desneux I 



i—nafttitus Perty) 1 



TEEMITIDAE (4) 



Cornitermes (C.) similis Hagen_, New species Number 



Nasutitermes (N.) macrocephalus 



Silvestri 



Capriiennes (Neocapriterines) vil- Capritcrmcs {N e o c a p r iteriues) 



losiis Holmgren brasiliensis, new species 



Total 3 Total 1 



Total 4 Grand total 1 5 



BOLIVIA 



KALOTERMITIDAE (2) 



! New species Number 



' Kalotermes {Neotermcs) magno- 



I cuius, new species ^ 



Kalotermes {Neotermes) manni, 

 j new species 



