ART. 6. NEW SPECIES OF TEKMITES SNYDER. 21 



Legs whitish with tinge of yellow, slender, elongate. 



Abdomen whitish, with tinge of yellow, with dense, long hairs. 

 Cerci elongate, prominent. 



Measurements. — Length of entire soldier, 6.75 mm.; length of 

 liead with mandibles, 3.2 mm.; length of head without mandibles 

 (to anterior), 2.2 mm.; length of head (to tip of labrum), 2.775 mm.; 

 length of pronotum, 0.5 mm.; length of left mandible, LI mm.; 

 length of hind tibia, 0.708 mm.; width of head, 1 mm.; width of pro- 

 notum, 0.8 mm. 



Whereas this termite is known only from the soldier caste, it 

 appears from the length of the head to be a distinct species. 



Type locality. — Coxipo, Cuyaba, Brazil. 



Described from a single soldier with workers determined, as 

 Leucotermes tenuis Hagen by Silvestri and presented by him to the 

 United States National Museum, No. 27. Other soldiers of longiceps 

 are from Minas Geraes, Brazil (between Philadelpia and Alaho), 

 Thayer Expedition. 



Type, soldier.— Csit. No. 25689, U.S.N.M. 



Genus SYNTERMES Holmgren. 



An interesting South American genus, usually of large and striking 

 species, which come above ground and harvest dead leaves; they live 

 in the ground in the forest and are very shy, retreating to their deep 

 underground galleries at the first alarm. Several of the 10 known 

 species have been inadequately described and in a future paper on 

 new termites from Bolivia and Brazil some of these species will be 

 redescribed All the castes of the described species have not as yet 

 been found. 



The galleries of some species are of large diameter, according to 

 Dr. W. M. Mann, of the Bureau of Entomology, and these termites 

 may utilize the burrows of rodents; one species in Bolivia (S. chaqui- 

 mayensis Holmgren) has been found to inhabit earth cook ovens. 



Winged, sexual adults of only nine species are known. 



KEY TO NINE SPECIES OF THE GENUS SYNTERMES HOLMGREN. 



Winged adults. 



1. Anterior corners of pronotum very pointed at tip; post-clypeus fairly large, 



raised up 2. 



Anterior corners of pronotum nearly rectangular, somewhat rounded off; post- 

 clypeus fairly flat 3. 



Anterior corners of pronotum strongly rounded 5. 



2. Ocelli separated from eye by a distance less than the diameter of eye. 



dims Burmeister. 

 Ocelli separated from eye by distance more than diameter of eye. snyderi Emerson. 



