2 PROCEEDINGS OF THE NATIONAL, MUSEUM. vol.61. 



Sj^ecies of Kalotermes are very destructive to the interior wood- 

 work and furniture of buildings and other timber. They are able to 

 infest wood directly and can survive in dry wood. Species of this 

 genus do not normally burrow in the ground ; occasionally they con- 

 struct galleries through the soil in artificial colonies in captivity. 

 As in other Kalutermitidae, the impressed pellets of excrement are 

 characteristic. 



KALOTERMES IMMIGRANS. new species. 



Winged adult. — Head castaneous-brown, paler posteriorly, longer 

 than broad, rounded posteriorly, with scattering but fairly long hairs- 

 Labrum light yellow-brown, broader than long, broadly rounded 

 anteriorly, with long hairs. Compound eye large, larger than in 

 Kalotermes marginipennis Latreille, not round, separated from the 

 lower (lateral) margin of the head by a distance less than its diame- 

 ter. Ocellus elongate, close and placed obliquely to eye. 



Antennae yellowish-brown, broken; with long hairs; third segment 

 darker, long (much longer than in viarginipennis) , slender, clavate 

 longer than second and fourth segments; second segment shorter 

 than fourth ; antenna becoming stouter toward apex. 



Pronotum slightly lighter colored than head ; broader than head : 

 twice as broad as long, the broadest part being nearer to posterior 

 margin than in marglnipennis; concave (emarginate) at anterior 

 margin, posterior margin almost straight; lateral margins somewhnt 

 angularly rounded posteriorly. Pronotum Avith light-yellow long 

 hairs on margins. 



Wing pale but costal veins ^ yellow-brown, radial sector with 5 

 branches to costa, branches longer than in marglnipennis; median 

 vein nearer to radial sector, branched (twice) or not, reaching 

 apex ; cubitus with 13 branches, not quite reaching apex (pi. 4, fig. 15), 

 Wing stub or scale ^ slightly longer than pronotum. 



Abdomen with dorsum same color as pronotum, with long hairs, 

 ventral surface paler. 



Legs paler in color than abdomen. 

 Measurements. 



Length of entire adult with wings: 12 mm. 



Length of entire deiilated ' adult : 5.5 mm. 



Length of head * : 1.40 mm. 



Length of pronotum : 0.705 mm. 



Length of hind tibia: 1.070 mm. 



Length of wing: 9.5-11 mm. 



Width of head (at eyes) : 1.102 mm. 



Diameter of eye (long diameter) : 0.307 mm. 



Width of pronotum (at broadest point) : 1.205 mm. 



Width of wing (at widest point) : 2.90 mm. 



» " Costal veins " rcfoi- to the costa and subcosta or radial sector. 



* " Wing scale" refers only to the base of the mesothoracic wing. 



• The adult after the loss of the wings Is termed " dealated." 

 ' From tip of labrum to posterior margin. 



