ART. 14 TERMITES FROM AMAZON BASIN — SNYDER 45 



have examined Sorensen's paratypes (soldiers and workers) of 

 ^^ rehiJiqrdii" from Rio Grande, Brazil, in the Museum of Compara- 

 tive Zoology, and redescribed the type for comparison with other 

 si3ecies. 



[Eufej'ines'] Microcerotermes strunckii is the only valid species 

 of the four species described as new by Sorensen in 1884. 



Genus ANOPLOTERMES Fritz MUller 



The winged adults of species of Anoj^^otei'mes have a ver^^ broad 

 head usually densely hairy, Avith small projecting eyes. Fontanelle 

 indistinct or large and prominent ; see key. Ocelli fairly large, more 

 or less distant from ej^es. Postctypeus strongl}?^ arched, length 

 usually less than half its width. Mandibles elongate, with a large 

 apical tooth. Antennae alwaj^s with 15 segments; third segment 

 much shorter than the following (exception A. silvestrii Emerson). 



Pronotum similar to that of species of Nasutite7^mes. Meso and 

 metanota elongate, narrow, with posterior margin more or less 

 deeply emarginate. Wings dark, hairy. 



There are marked differences in the sexual, winged adults, be- 

 tAveen males and females. 



In some species of the subgenus Speculiterrnes Wasmann the 

 workers are darkly colored and the fontanelle is large, round, and 

 prominent; the third segment of the antennae of the winged adult 

 usually is large (approximately equal to the fourth) — not small as 

 in AnopJotet^nes {sensu strictore). These species of SpecuUtermes 

 live in earth nests in the crotches of trees near the ground, whereas 

 some Central American s^Decies of Anoplotennes usually do not 

 construct earth nests or mounds. 



KEY TO SOME SOUTH AMERICAN ANOPLOTERMES FRITZ MULLER (S. S.) BASED PRIMARILY ON 



THE FONTANELLE 



1. Fontanelle distinct 2 



Fontanelle indistinct 14 



2. Fontanelle hyaline 3 



Fontanelle not hyaline 13 



3. Fontanelle very large (0.25 mm, in length, 0.20 mm. in width) 



grandifons Snyder 



Fontanelle large, oval, raised 4 



Fontanelle large, heart shaped turricola Silvestri 



Fontanelle large, suboval, wide 5 



Fontanelle small, subolliptieal, narrow 8 



4. Winged adults large (1G.50 mm. in length) pacificus Fritz Miiller 



Winged adults small (11.50 mm. in length) rotundus Snyder 



5. Winged adults very large (24 mm. in length) cingulatus Silvestri 



Winged adults large (17 mm. in length) abbreviatus Silvestri 



Winged adults small 6 



6. Head broad (1.30 mm. in width) punctatus Snyder 



Head narrower 7 



