ART. 14 TERMITES FROM AMAZON BASIN SNYDER 61 



rower headed than panamaensis) ; holivianus has a longer, narrower 

 head than nigritus Silvestri, and a longer and more robust frontal 

 process. 



Type locality. — I von, Bolivia. 

 Described from a series of soldiers and workers collected at the type 

 locality in March, 1922, by W. M. Mann. 



Tyjje, soldier.— Cat. No. 27677, U.S.N.M. 



Subgenus Spinitermes Wasmann 



This subgenus of Mirotermes Wasmann is restricted to South 

 America; only four species have as yet been described. Holmgren 

 found one species of Mirotermes and two species of Spimtermes on 

 the Nordenskioldi Expedition — all being new. Mann found only one 

 species of Mirotermes and but one new and two known species of 

 Spinitermes in Bolivia on the Mulford Expedition. Specific char- 

 acters are found in the remarkable three-pointed frontal process 

 (fig. 2). 



MIROTERMES (SPINITERMES) BREVICORNUTUS Holmgren 



Soldier (fig. 26). — Head yellow, paler posteriorly, sides nearly 

 parallel, slightly narrowed anteriorly, central anterior point much 

 larger and more robust than two lateral, small, robust points, forms 

 an acute angle with head, wrinkled and slightly upturned at pointed 

 apex, head with si)arse short hairs and scattered long hairs, central 

 and lateral points with dense, long hairs. 



Labrum yellow, longer than broad, two lateral points hyaline, 

 elongate, pointed ; center not markedly convex, as in rohustus Snyder, 

 with long hairs. 



Gula narrow, more than twice as wide at front as at center. 



Mandibles black with reddish tinge, elongate, slender, slightly 

 bowed and incurved at tips. 



Antenna white with tinge of yellow, 14 segments, pubescent ; third 

 segment shorter than second, approximately the same size as the 

 fourth segment (slightly longer), fifth longer (in the type of M. (S.) 

 trispinosus Hagen,^^ the third segment is shorter than the second but 

 longer than the fourth) ; eleventh to fourteenth slightly shorter 

 and slenderer ; last segment slender and pointed at tip. 



Pronotum pale yellow, saddle-shaped, anterior very high, anterior 

 margin emarginate, with short and long hairs. 



Legs white with tinge of yellow, pubescent. 



Abdomen gray with tinge of yellow, with very dense short hairs 

 and two long hairs at base of each tergite, dense long hairs at end 

 abdomen. 



12 Emerson's specimens of trispinosus from British Gui.ina have the fourth seuiuent 

 longer than the second or tliird segments and narrower head ; they probably rcprisent a 

 new species. 



