Aitr. 6. NEW SPECIES OF TERMITES SNYDER. 15 



KEY TO AMERICAN SPECIES OF LEUCOTEBMES SILVESTEI. 



Winged adults. 



1. Wing surface densely hairy crinitus Emerson. ^^ 



Wing surface with many hairs, posterior margin of meso- and metanota emarginate 



and not covered by wing scale tenuis Hagen. 



Wing surface with few hairs, posterior margin of meso- and metanota convex and 

 covered by wing scale 2 . 



2. Cubitus vein and branches spread over more than half of width of wing, median 



vein near cubitus, hardly any hairs on wing surface cardini, new species. 



Cubitus and branches spread over less than half of width of wing, median inter- 

 mediate between subcosta and cubitus 3. 



3. Compound eye more than its long diameter from lateral margin of head. 



aureus Snyder. 



Compound eye less than its long diameter "from lateral margin of head. 



convexinotatus, new species . 



Soldiers. 



1. Head densely hairy crinitus Emerson.'^ 



Head with many, hairs tenuis Hagen. 



Head with few hairs 2 . 



2. Head very elongate longiceps, new species. 



Head not very elongate 3. 



3. Head with few hairs cardini, new species. 



Head with very few hairs convexinotatus, new species.'^ 



LEUCOTERMES CONVEXINOTATUS. new species. 



Winged adult (pi. 1, fig. 7). — Head yellow-brown, darker between 

 the eyes, paler posteriorly, not so dark as in L. tenuis Hagen; sub- 

 elliptical, broadest at eyes, narrower than in tenuis, rounded pos- 

 teriorly; with fairly dense light yellow long bristles and shorter hairs. 

 Fontanelle not so large as in tenuis, a pale, slightly raised, round spot 

 on a line just back of the eyes. 



Antennae light yellow-brown, with 17 segments, pubescent; seg- 

 ments variable in size and shape; first segment elongate, cylindrical; 

 second shorter and not so wide; third ring-like, about half the length 

 of the second; fourth longer than third; the following segments be- 

 com.e wider and more wedge-shaped toward apex; last segment 

 elongate, slender, elliptical. 



Compound eye black, not round, not very prominent or raised; 

 separated from lateral margin of head by a distance less than its 

 long diameter. Ocelli variably absent or present; when present 

 elongate, and about the short diameter of an ocellus distant from eye. 



Labrum light yellow, longer than broad, broadest near middle, 

 somewhat tongue-shaped, broadly rounded in front, with long hairs 

 on apex. 



'2 The characters of this termite Leucotermes crinitus Emerson MS. are those used by Alfred Emerson in 

 his description and the species is to be credited to Emerson. 



13 It is very difBcult to separate these two species from the soldier caste alone; convexinotatus has fewer 

 hairs on the head than cardini. 



