MANN: THE ANTS OF BRAZIL. 437 



88. Pheidole {Pheidole) fallax siibsp. jelksii Mayr. 

 Found at Abuna, Bolivia, and at Porto Velho, Brazil. 



89. Pheidole {Pheidole) fallax subsp. jchlcii var. antillensis Forel. 



Several workers and soldiers from Para and Abuna, Bolivia agree 

 closely with West Indian specimens before me. 



90. Pheidole {Pheidole) impressa Mayr. 



Two soldiers of this curiously colored species were taken at Baixa 

 Verde. Since the types were described from Baturite in Ceara, the 

 species has not been recorded. My soldiers differ a little in color 

 from those described by Mayr, but otherwise agree closely with his 

 description. The head is ferruginous instead of ochre-yellow and 

 the gaster black. It may be that the Baixa Verde specimens repre- 

 sent an undescribed color variety, but I think it more probable that 

 those before Mayr were more immature and the color not fully devel- 

 oped. 



91. Pheidole {Pheidole) loallacei, sp. nov. 



Soldier. Length 6 mm. 



Head, excluding mandibles, longer than broad, narrowed behind; 

 sides slightly convex; occipital corners narrowly rounded, the border 

 with a shallow, narrow incision. Mandibles large and stout, the 

 apical tooth long; blade with a short, stout subapical tooth and 

 several very small teeth. Clypeus depressed; anterior border dis- 

 tinctly concave at middle. Frontal carinae strong and thin at base, 

 extending only slightly past the antennal pits. Frontal area strongly 

 depressed. Antennal scapes slender, extending almost to occipital 

 corners, moderately bent at base; funiculus long and very slender, 

 the first joint somewhat swollen, joints 2-8 cylindrical, three times as 

 long as broad ; club very slender, a little more than half as long as the 

 rest of funiculus, the joints abovit four times as long as broad, apical 

 joint a little longer than the penultimate. Eyes small, convex, located 

 at anterior third of head. Pronotum in profile evenly rounded; the 

 sides slightly drawn out and rounded a little posterior to the middle. 

 Mesonotum in profile angulate at middle, the anterior part flat, the 

 posterior declivous. Base of epinotum much longer than the declivity. 



