MANN: THE ANTS OF BRAZIL. 457 



with an elongate black spot between branches of cubital vein. Rest 

 as in the worker. 



Male. Length 5 mm. 



Head, excluding mandibles about one and one third times as long 

 as broad, rounded at sides, behind more suddenly constricted than in 

 the worker and female. Eyes and ocelli large, very convex. First 

 joint of funiculus one third as long as second; second joint one and 

 one fourth times as long as third; joints 3-11 subequal, two and one 

 half times as long as broad. Prothorax in front constricted; seen in 

 profile depressed; broadly margined. Mesothorax rounded, without 

 longitudinal ridges. Scutellum with broad, flat teeth, as in female. 

 Epinotum, petiole, postpetiole, and gaster similar to these parts in the 

 female. 



Pilosity abundant, black, suberect on the head and body, more 

 depressed on the legs. 



Wings. Length 4 mm.; fuscous, clouded with darker spots. 



Color as in worker and female. 



Described from specimens taken from two colonies at Abuna and 

 Madeira-Mamore R. R. Camp 39. Apierostigma hranncri approaches 

 most closely A. calrerti Wheeler from Costa Rica, but A. hranneri 

 has the head distinctly longer, the pronotum less declivous in front, 

 and without the deep impression posterior to the margin, and it lacks 

 the distinct ridge on the propleurae; the angle between the base and 

 declivity of the epinotum is much more obtuse. Seen in profile, the 

 slope of the epinotal declivity is more gradual. The size of the worker 

 of A. calverti is smaller (3.5-4 mm.). 



150. Myrmicocrypta foreli, sp. nov. 

 Plate 4, fig. 32-34. 



Worker. Length 3.25 mm. 



Head, excluding mandibles, about one fourth longer than broad, a 

 little longer behind than in front, with slightly convex sides and 

 concave occipital border, the occipital corners drawn out into thick 

 blunt spines. Front broad and flat. Clypeus with broadly rounded 

 anterior border. Frontal carinae somewhat elevated at base of 

 antennal scape, anteriorly extending outward, almost attaining outer 

 corners of the clypeus; posteriorly very slightly diverging towards 

 occipital border, becoming much weaker at a little less than half the 

 distance from base of scape to occiput. Antennal scapes curved, 



