AKT. 14 TERMITES FROM AMAZON BASIN SNYDER 9 



Measurements {minor soldier) — Continued. 

 Length of left mandible, 0.35 mm. 

 Length of pronotum, 0.32 mm. 

 Length of hind tibia, 0.G2 mm. 

 Width of head (at widest point), O.GO mm. 

 Width of labrum (at base), 0.13 mm. 

 Width of labrum (at forlcs at apex), 0.13 mm. 

 Width of labrum (at center), 0.07 mm. 

 Width of pronotum, 0.47 mm. 



R. latildbrum Snyder has a smaller head with fewer hairs and 

 narrower labrum than longildbius Emerson (pi. 1, fig. 8) ; the an- 

 terior margin of the pronotum is raised up less sharply than in 

 longildbius; the long pointed mandibles distinguish this species from 

 longidens Snyder (pi. 1, figs. 1 and 10). 



Type locality. — Rio Ivon, Bolivia. 



Described from one major soldier and a series of minor soldiers, 

 collected with workers at the type locality in February, 1922, by 

 W. ]M. Mann. A dealated adult of R. m.arginalis Linnaeus was also 

 collected with these specimens. 



Type.^ major soldier. — Cat. No. 27646, U.S.N.M. ; morphotype 

 minor soldier. 



RHINOTERMES MANNI, new species 



Winged., viale adult. — Head light yellow-brown (golden brown), 

 clypeus somewhat darker, with scattered long hairs, a little longer 

 than broad, sides roundedly slojDe to posterior margin, which is not 

 transverse (as in R. taurus Desneux). Horn (clypeus) outlined by 

 V-shaped grooves which originate at the fontanelle, elongate and 

 broad with a median groove leading from the fontanelle, with a 

 few long hairs anteriorly where rounded and curved down ven- 

 trally. Fontanelle hyaline, small round opening located well for- 

 ward (on a transverse line with the anterior margin of the ocelli). 



Eyes black, nearly round, projecting, close to lateral margin of 

 head. Ocelli hyaline, suboval, slightly projecting, separated from 

 eyes by a distance less than their diameter. Anterior to the ocelli 

 are two large transversely placed quarter moon shaped hyaline spots. 



Antenna pale yellow (third segment yellow-brown), 20 segments, 

 with long hairs; third segment slender, elongate and markedly sub- 

 clavate, longer than both the fourth and fifth segments together; 

 from fourth segment on antennae bead-like, segments becoming 

 longer toward apex; last segment slender and subelliptical. 



Pronotum same color as head, not twice as broad as long, nearly 

 rectangular, slightly saddle shaped, corners rounded and posterior 

 margin slightly concave, with long hairs on margins. 



Wing scale of forewing longer than pronotum, with long hairs, 

 overlaps the base of the hind wing scale, which is shorter than the 

 pronotum. 



60730—2(3 2 



