24 



PROCEEDINGS OF THE NATIONAL, MUSEUM. 



VOL. 64, 



angles to veins. In fore wing median vein nearly in middle between 

 subcosta and cubitus, but slightly nearer to cubitus, branches to apex 

 of wing, cubitus with 17 branches or sub-branches, does not reach 

 apex of wing. 



Wing stub shorter than pronotum, median and cubitus originate 

 free within stub, with hairs on margins. 



Abdomen with tergites dark brown, with reddish tinge; sternites 

 yellow-brown; with long hairs. 



Syntermes dims Burmeister, type No. 204, Museum of Comparative 

 Zoology, male winged adult from Brazil, Winthem, Col., has the head 

 reddish-brown in color, not hairy. The fontanelle is a yellow depres- 

 sion, not as large as the diameter of an eye. The ocellus is separated 

 from the eye by a distance (0.65 mm.) nearly equal to the diameter 

 of an eye. The post-clypeus is yellow-brown and raised up. In a 

 winged female from Rio de Janeiro, Brazil, identified as dims, in the 

 Hagen collection, the forewing is 35 mm. in length and 7.5 mm. in 

 width; the length of the dealated adult is 19 mm. 



Termes decumanus Erichson, type from British Guyana, Schom- 

 burgk Col. (Mus. Berol), in the Hagen collection, is labeled Syntermes 

 grandis Rambur by Hagen. Hagen states that these specimens have 

 been compared with and are identical with Rambur's type of grandis. 

 The hea,d is deep black, not hairy. The ocellus is separated from the 

 eye by a distance (0.65 mm.) nearly equal to the diameter of an eye. 

 The fontanelle is a large, reddish-brown, round spot. The post- 

 clypeus is red-brown and not raised up. 



The following comparative measurements show how the winged 

 sexual adult of S. magnoculus Snyder differs from that of dims and 

 of grandis. 



Measurements. 



Syntermes 



magnoculus 



Snyder 



(female). 



Syntermes 



dims 



Burmeister 



(male).' 



Syntermes 

 grandis 

 Rambur 



(female). 2 



Syntermes 

 molestu-s 



Burmeister 

 (male) .3 



Length of entire winged adult 



Length of entire dealated adult 



Length of head (tip of mandibles to posterior 



margin) 



Length of pronotum 



Length of hind tibia 



Length of anterior wing 



Diameter of eye (long diameter) 



Width of head (between eyes) 



Width of pronotum 



Width of anterior wing 



00 mm. 

 00 mm. 



20 mm. 

 2.5 mm. 

 80 mm. 

 00 mm. 

 15 mm. 

 ."iO mm. 

 30 mm. 

 00 mm. 



36.00 mm. 

 16.00 mm. 



4.10 mm. 

 2. 20 mm. 

 6.00 mm. 

 30.00 mm. 

 0. 80 mm. 

 3.70 mm. 

 4.00 mm. 

 7.00 mm. 



36.00 mm. 

 15.00 mm. 



4. 50 mm. 



2.20 mm. 



<6.90(?) mm. 



32. 50 mm. 



0.95 mm. 



4. 40 mm. 



3.90 mm. 



6.0-7.0 mm. 



29.00 mm. 

 12.00 mm. 



3.40 mm. 

 1.50 mm. 

 4.20 mm. 

 22.00 mm. 

 0.75 mm. 

 3.00 mm. 

 2.80 mm. 

 6.00 mm. 



' Type (paratype?) No. 204, Museum of Comparative Zoology, Cambridge, Mass., from Brazil, Winthem, 

 Collector. 



2 Measurements made of a winged female of Termes decumanus Erichson, from British Guyana, Schom- 

 burgk Col. (Museum Berol), Musetmi of Comparative Zoology, which Hagen compared with Rambur's 

 type of grandis and declared them to be identical (Linn. Ent., vol. 12^ pp. 158-9). 



'A winged male labeled molestus, from the Amazon River, Brazil, Saunders Col., Hagen Collection, 

 Museum oif Comparative Zoology. 



< Broken; measurement taken from a specimen from Brazil. 



