28 PROCEEDINGS OF THE NATIOiSTAI^ MUSEUM. vol.64, 



SYNTERMES HAGENI Holmgren. 



Soldier (pi. 4, fig. 21). — Head light castaneous-brown, somewhat 

 darker (reddish-brown) toward front, shining, flatly arched, broadest 

 near base, narrowed anteriorly but little, sides nearly parallel, oval, 

 with few scattered long hairs, fewer than in S. chaquimayensis Holm- 

 gren or dims Burmeister. 



Fontanelle near front of head, opening projected into a short tube. 

 Antennae yellow-brown, broken. Labrum reddish-brown, front with 

 central lobe hyaline. Post-clypeus reddish-brown, somewhat raised 



up- 



Mandibles shining black, elongate, pointed at tips where slender, 

 stout, base reddish-brown, more slender than in S. chaquimayensis', 

 with few long hairs; marginal teeth as in figure. 



Pronotum yellowish-brown, saddle-shaped, anterior margin slightly 

 emarginate, lateral spines shorter and stouter than in dims or cha- 

 quimayensis. 



Legs yellow-brown, elongate. 



Abdomen light castaneous-brown. 



Measurements. — Total length of soldier, 13.5 mm.; length of head 

 with mandibles, 8.5 mm.; length of head without mandibles (to tip 

 of labrum), 6.6 mm.; length of head without mandibles (to anterior 

 of head), 6.1 mm.; length of labrum (to base central hyaline lobe), 

 0.8 mm.; length of protonum (to tips spines), 1.2 mm.; length of left 

 mandible, 3 mm.; width of head (at broadest part), 6 mm.; width of 

 labrum, 1.3 mm.; -vsddth of pronotum, 4.2 mm. 



Undoubtedly hageni, considered by Holmgren to^^be a form of S. 

 diriis Burmeister, is a distinct species. The specimens of S. chaquim- 

 ayensis with which this soldier were compared were from Huachi, 

 Bolivia, and those of dims from Kartabo, British Guiana. Unfor- 

 tunately Holmgren's description is meager, the only characters given 

 being those used in a key. 



Hageni is a smaller species than dirus, with the head not as yellow- 

 ish as dims, being more castaneous. It is only known from the sol- 

 dier caste. 



The single pinned soldier upon which this description is based was 

 kindly loaned the writer by Alfred Emerson, of the department of 

 zoology of the University of Pittsburgh; it is deposited in the Car- 

 negie Museum, Pittsburgh, Pa., Ace. No. 3564. This soldier was col- 

 lected at Entre Eios, Rio de Janeiro, Brazil, June 4, 1908, by J. D. 

 Haseman. 



"Holmgren, Nils. 1. Bemorkiingen iiber einige Termiten-Arten. Zoolog. Anzeiger, vol. 37, No. 26, 

 pp. 543-548, 13 June, 1911. 



