50 PROCEEDINGS OF THE NATIONAL MUSEUM vol. es 



Wings smoky-gray, costal area yellow-brown, margins ciliate, sur- 

 face punctate and with hairs. Forewing with median vein slightly 

 nearer cubitus than subcosta unbranched with two — three branches 

 to apex of wing or also with three branches to lower margin in ad- 

 dition ; cubitus with 9-12 branches or sub-branches to lower margin 

 of wing, occupies but little of wing area (in width). 



Legs yellow with tinge of brown, with long hairs. 



Abdomen with tergites light castaneous-brown tinged with gray, 

 with spiracular markings and dense long hairs; cerci fairly promi- 

 nent. 



Measwrements. — 



Leugth of entire winged female adult, 9.80-10.25 mm. 



Length of entire winged male adult, 9.00-9.50 mm. 



Length of entire dejilated female, G.50-6.75 mm. 



Length of entii'e dealated male, 6.00 — G.25 mm. 



Length of head (to tip of labrum), 1.10 mm. 



Length of left mandible, 0.45 mm. 



Length of pronotum, 0.45 mm. 



Length of hind tibia, 0.80 mm. 



Length of anterior wing of female, 8.25 mm. 



Diameter of eye (long diameier), 0.25 mm. 



Width of head (at e.ve.s), 0.85 mm. 



Width of pronotum, 0.70 mm. 



Width of anterior wing of female, 2.30 mm. 



Type locality. — Rurrenabaque, Bolivia. 



Described from a series of winged female and male adults col- 

 lected at the type locality in October, 1921, by W. M. Mann. 

 Type, winged female adult. — Cat. No. 27664, U.S.N.M. 



ANOPLOTERMES (ANOPLOTERMES) GRANDIFONS. new species 



Dealated, female adult. — Head dark castaneous-brown, broader 

 than long (posterior to base of postclypeus), with dense long hairs 

 and shorter hairs. Fontanelle a very prominent hyaline oblong 

 depression, slightly on a bias, 0.25 mm. in length and 0.20 mm. in 

 width (pi. 1, fig. 3). 



Eye black, nearly round, large, prominent and projecting, close 

 to lateral margin of head. Ocellus hyaline, suboval, with project- 

 ing upper rim, separated from the eye by a distance equal to its 

 short diameter. 



Postclypeus light castaneous, bilobed, projecting, slightly over 

 twice as broad as long, with long hairs. 



Mandibles yellow to castaneous at apex, elongate. 



Antenna yellow brown, 15 segments, with long hairs; third seg- 

 ment shorter than second or fourth segments, narrow, ring-like; 

 fourth shorter than second segment; segments become longer and 

 broader toward apex ; last segment narrow, slender, sub-elliptical. 



