ART. 20 SOME NEW AMERICAN TERMITES SNYDER, 23 



ARMITERMES INTERMEDIUS, new species. 



fScldiei' (pi. 1, fig. 3). — Head yellowish-brown, nasiis slightly 

 darker on sides; head much broader but shorter than in A. hetero- 

 typus Silvestri, longer than broad, somewhat retort shaped in lateral 

 view ; broadest at base, tapers anteriorly, rounded at base ; few long 

 hairs or bristles on anterior and posterior margins of head. Gula 

 elongate, slender, tapering anteriorly, lateral margins dark cas- 

 taneous-brown. Nasus slightly shorter than width of head at an- 

 terior margin where head is least broad; nju us broadest at base 

 tapering to apex, slightly emarginated at tip ; end of nasus directly 

 over tip of labrum (in lateral view) ; short hairs on apex of nasus. 



Mandibles dark castaneous-brown to black except at base where 

 yellow-brown ; mandibles when closed extending beyond tip of 

 nasus. Mandibles curved, broad at base, slender at apex; marginal 

 tooth near middle, with its outer edge near the inner margin of 

 mandible and distinctly parallel to margin of mandible ; inner edge 

 of marginal tooth forming a sharp angle with the mandible. 



Labrum broadest at base, yellow-brown, tapering to apex, where 

 it is membranous, white and looks like a hollow, white, fleshy tube; 

 covered with long golden-yellow pubescence. 



Antennae yellow-brown, longer than head, slender, 15-16 seg- 

 ments, with long pubescence; first segment long, stout, cylindrical; 

 second shorter, usore slender, subclavate; third clavate, slightly 

 longer than second ; fourth and fifth subequal and approximately 

 equal in length to third, or slightly longer than third ; sixth longer ; 

 antennae becoming more clavate-shaped and slender at seventh seg- 

 ment ; last segment subovate and slender. 



Pronotum yellow-brown on posterior margins; saddle-shaped; 

 broadest at middle, nearly twice as broad as long; rounded at apex, 

 posterior half trapezoidal, long pubescence on lateral margins. 



Abdomen gray with tinge of yellow, with long, golden -yellow 

 pubescence. 



Legs yellowish, long and slender. 



Measurements. 



Length of entire soldier : 5.75-7.25 mm. 



Length of head with mandibles : 3.1-3.35 mm. 



Length of head without mandibles (to base labrum) : 2.15-2.30 mm. 



Length of left mandible : 1.25-1.35 mm. 



Length of head with nasus: 2.75-2.95 mm. 



Length of nasus : 0.95-1.2 mm. 



Length of abdomen and thorax together: 4.0-4.85 mm. 



Length of pronotum : 0.50-0.60 mm. 



Length of hind tibia : 1.80-2.00 mm. 



Width of head (at widest point) : 1.90-2.15 mm. 



Width of pronotum : 1.15-1.20 mm. 



20107— 22— Proc. N. M. vol. 61 29 



